<?xml version="1.0" encoding="UTF-8"?>

<!--XBRL Document Created with the Workiva Platform-->
<!--Copyright 2025 Workiva-->
<!--r:d3155ee8-1012-46c2-a378-11d4d9ef27ca,g:f0e4264c-ea93-4a63-a8be-f239fe2ec7e8-->
<link:linkbase xmlns:link="http://www.xbrl.org/2003/linkbase" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.xbrl.org/2003/linkbase http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd">
  <link:roleRef roleURI="http://ucbi.com/role/ConsolidatedBalanceSheets" xlink:type="simple" xlink:href="ucbi-20241231.xsd#ConsolidatedBalanceSheets"/>
  <link:calculationLink xlink:role="http://ucbi.com/role/ConsolidatedBalanceSheets" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Assets_07bd0827-508c-4bf8-944d-65bfa434f7a8" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_Assets"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestReceivable_fda80fcf-a07f-4724-b18c-323e668cef93" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_InterestReceivable"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Assets_07bd0827-508c-4bf8-944d-65bfa434f7a8" xlink:to="loc_us-gaap_InterestReceivable_fda80fcf-a07f-4724-b18c-323e668cef93" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentNet_ed4b7927-75c7-4274-8082-6223442c0d07" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_PropertyPlantAndEquipmentNet"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Assets_07bd0827-508c-4bf8-944d-65bfa434f7a8" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentNet_ed4b7927-75c7-4274-8082-6223442c0d07" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherAssets_dba9ac2e-2e54-4ace-9623-9c399b6a835d" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_OtherAssets"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Assets_07bd0827-508c-4bf8-944d-65bfa434f7a8" xlink:to="loc_us-gaap_OtherAssets_dba9ac2e-2e54-4ace-9623-9c399b6a835d" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableExcludingAccruedInterestAfterAllowanceForCreditLoss_305cf62b-0345-4059-8183-82972e0eee01" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FinancingReceivableExcludingAccruedInterestAfterAllowanceForCreditLoss"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Assets_07bd0827-508c-4bf8-944d-65bfa434f7a8" xlink:to="loc_us-gaap_FinancingReceivableExcludingAccruedInterestAfterAllowanceForCreditLoss_305cf62b-0345-4059-8183-82972e0eee01" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IntangibleAssetsNetIncludingGoodwill_554ba239-8d90-44a3-a785-747cd719cf61" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_IntangibleAssetsNetIncludingGoodwill"/>
    <link:calculationArc order="5" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Assets_07bd0827-508c-4bf8-944d-65bfa434f7a8" xlink:to="loc_us-gaap_IntangibleAssetsNetIncludingGoodwill_554ba239-8d90-44a3-a785-747cd719cf61" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BankOwnedLifeInsurance_92246f57-ae8c-480e-ac3c-75f631fd8b0e" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_BankOwnedLifeInsurance"/>
    <link:calculationArc order="6" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Assets_07bd0827-508c-4bf8-944d-65bfa434f7a8" xlink:to="loc_us-gaap_BankOwnedLifeInsurance_92246f57-ae8c-480e-ac3c-75f631fd8b0e" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeAssets_7f417481-b4e2-4e73-b769-be0a7df9003a" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DerivativeAssets"/>
    <link:calculationArc order="7" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Assets_07bd0827-508c-4bf8-944d-65bfa434f7a8" xlink:to="loc_us-gaap_DerivativeAssets_7f417481-b4e2-4e73-b769-be0a7df9003a" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredIncomeTaxAssetsNet_29249ea3-a71d-4a91-add2-40bb649f703f" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DeferredIncomeTaxAssetsNet"/>
    <link:calculationArc order="8" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Assets_07bd0827-508c-4bf8-944d-65bfa434f7a8" xlink:to="loc_us-gaap_DeferredIncomeTaxAssetsNet_29249ea3-a71d-4a91-add2-40bb649f703f" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LoansHeldForSaleFairValueDisclosure_512628ab-cf20-4f91-984a-30feca03f90c" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_LoansHeldForSaleFairValueDisclosure"/>
    <link:calculationArc order="9" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Assets_07bd0827-508c-4bf8-944d-65bfa434f7a8" xlink:to="loc_us-gaap_LoansHeldForSaleFairValueDisclosure_512628ab-cf20-4f91-984a-30feca03f90c" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CashCashEquivalentsAndFederalFundsSold_f82545ff-9029-464a-9ef3-72c837785e30" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_CashCashEquivalentsAndFederalFundsSold"/>
    <link:calculationArc order="10" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Assets_07bd0827-508c-4bf8-944d-65bfa434f7a8" xlink:to="loc_us-gaap_CashCashEquivalentsAndFederalFundsSold_f82545ff-9029-464a-9ef3-72c837785e30" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtSecuritiesAvailableForSaleExcludingAccruedInterest_5b31ccb5-b215-48db-9ce8-ebebaf47c58a" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DebtSecuritiesAvailableForSaleExcludingAccruedInterest"/>
    <link:calculationArc order="11" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Assets_07bd0827-508c-4bf8-944d-65bfa434f7a8" xlink:to="loc_us-gaap_DebtSecuritiesAvailableForSaleExcludingAccruedInterest_5b31ccb5-b215-48db-9ce8-ebebaf47c58a" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_ucbi_DebtSecuritiesHeldToMaturityExcludingAccruedInterest_f216c2e6-38a4-4ca0-a4c4-19d2550f792e" xlink:href="ucbi-20241231.xsd#ucbi_DebtSecuritiesHeldToMaturityExcludingAccruedInterest"/>
    <link:calculationArc order="12" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Assets_07bd0827-508c-4bf8-944d-65bfa434f7a8" xlink:to="loc_ucbi_DebtSecuritiesHeldToMaturityExcludingAccruedInterest_f216c2e6-38a4-4ca0-a4c4-19d2550f792e" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Deposits_fe0f5afc-fe50-4946-87b9-9da845b7b8dc" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_Deposits"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NoninterestBearingDepositLiabilities_2d5ad1ca-eacb-42b3-b643-c98341e38668" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_NoninterestBearingDepositLiabilities"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Deposits_fe0f5afc-fe50-4946-87b9-9da845b7b8dc" xlink:to="loc_us-gaap_NoninterestBearingDepositLiabilities_2d5ad1ca-eacb-42b3-b643-c98341e38668" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestBearingDepositLiabilities_bbe26126-10d8-41c2-8ffd-c0466f838cef" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_InterestBearingDepositLiabilities"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Deposits_fe0f5afc-fe50-4946-87b9-9da845b7b8dc" xlink:to="loc_us-gaap_InterestBearingDepositLiabilities_bbe26126-10d8-41c2-8ffd-c0466f838cef" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Liabilities_393c57f2-8d86-43f9-ae01-d5186b7b157e" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_Liabilities"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccruedLiabilitiesAndOtherLiabilities_44168bbc-391a-427e-afb8-a28858cf408e" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_AccruedLiabilitiesAndOtherLiabilities"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Liabilities_393c57f2-8d86-43f9-ae01-d5186b7b157e" xlink:to="loc_us-gaap_AccruedLiabilitiesAndOtherLiabilities_44168bbc-391a-427e-afb8-a28858cf408e" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShortTermBorrowings_0cd5a64a-bdef-4e28-a2c7-714689d57f71" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ShortTermBorrowings"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Liabilities_393c57f2-8d86-43f9-ae01-d5186b7b157e" xlink:to="loc_us-gaap_ShortTermBorrowings_0cd5a64a-bdef-4e28-a2c7-714689d57f71" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebt_0f4f6981-317a-4586-a408-63557a56b5fd" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_LongTermDebt"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Liabilities_393c57f2-8d86-43f9-ae01-d5186b7b157e" xlink:to="loc_us-gaap_LongTermDebt_0f4f6981-317a-4586-a408-63557a56b5fd" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Deposits_49033f5a-160b-4346-b12d-8666c0301a21" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_Deposits"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Liabilities_393c57f2-8d86-43f9-ae01-d5186b7b157e" xlink:to="loc_us-gaap_Deposits_49033f5a-160b-4346-b12d-8666c0301a21" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeLiabilities_e67aa80e-5b24-4e0b-a9fb-76d6834ffe79" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DerivativeLiabilities"/>
    <link:calculationArc order="5" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Liabilities_393c57f2-8d86-43f9-ae01-d5186b7b157e" xlink:to="loc_us-gaap_DerivativeLiabilities_e67aa80e-5b24-4e0b-a9fb-76d6834ffe79" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilitiesAndStockholdersEquity_b11a44ff-3e9e-491a-adb3-4d2f3904c1fe" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_LiabilitiesAndStockholdersEquity"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquity_555c4f04-8062-4d67-be97-42d329418acc" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_StockholdersEquity"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquity_b11a44ff-3e9e-491a-adb3-4d2f3904c1fe" xlink:to="loc_us-gaap_StockholdersEquity_555c4f04-8062-4d67-be97-42d329418acc" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Liabilities_1796f07c-0ba6-4cfd-bd6a-02e6376764b5" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_Liabilities"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquity_b11a44ff-3e9e-491a-adb3-4d2f3904c1fe" xlink:to="loc_us-gaap_Liabilities_1796f07c-0ba6-4cfd-bd6a-02e6376764b5" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommitmentsAndContingencies_2ccd9f0d-94e4-4b10-a1df-027f0760078b" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_CommitmentsAndContingencies"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquity_b11a44ff-3e9e-491a-adb3-4d2f3904c1fe" xlink:to="loc_us-gaap_CommitmentsAndContingencies_2ccd9f0d-94e4-4b10-a1df-027f0760078b" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquity_144ac9e1-afeb-44d3-ac8a-d3b75840abd9" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_StockholdersEquity"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PreferredStockIncludingAdditionalPaidInCapitalNetOfDiscount_a499abf8-f560-4286-ac2a-7635d839ced2" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_PreferredStockIncludingAdditionalPaidInCapitalNetOfDiscount"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_StockholdersEquity_144ac9e1-afeb-44d3-ac8a-d3b75840abd9" xlink:to="loc_us-gaap_PreferredStockIncludingAdditionalPaidInCapitalNetOfDiscount_a499abf8-f560-4286-ac2a-7635d839ced2" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AdditionalPaidInCapital_b5a64bb7-5448-4ac7-baa6-2adef3c5c40f" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_AdditionalPaidInCapital"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_StockholdersEquity_144ac9e1-afeb-44d3-ac8a-d3b75840abd9" xlink:to="loc_us-gaap_AdditionalPaidInCapital_b5a64bb7-5448-4ac7-baa6-2adef3c5c40f" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockValue_1940c9d9-d232-4198-8b91-17c31bf682a0" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_CommonStockValue"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_StockholdersEquity_144ac9e1-afeb-44d3-ac8a-d3b75840abd9" xlink:to="loc_us-gaap_CommonStockValue_1940c9d9-d232-4198-8b91-17c31bf682a0" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetainedEarningsAccumulatedDeficit_3e657c0b-e66b-4512-968a-f91fb4c0b5b0" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_RetainedEarningsAccumulatedDeficit"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_StockholdersEquity_144ac9e1-afeb-44d3-ac8a-d3b75840abd9" xlink:to="loc_us-gaap_RetainedEarningsAccumulatedDeficit_3e657c0b-e66b-4512-968a-f91fb4c0b5b0" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax_8116cede-8a9f-4aa1-b170-8827881726fc" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax"/>
    <link:calculationArc order="5" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_StockholdersEquity_144ac9e1-afeb-44d3-ac8a-d3b75840abd9" xlink:to="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax_8116cede-8a9f-4aa1-b170-8827881726fc" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_ucbi_CommonStocksIssuable_fb6a0b78-a4b0-4676-adee-be5c2a049a3e" xlink:href="ucbi-20241231.xsd#ucbi_CommonStocksIssuable"/>
    <link:calculationArc order="6" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_StockholdersEquity_144ac9e1-afeb-44d3-ac8a-d3b75840abd9" xlink:to="loc_ucbi_CommonStocksIssuable_fb6a0b78-a4b0-4676-adee-be5c2a049a3e" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CashCashEquivalentsAndFederalFundsSold_65cd6a54-35e1-4eae-8fb2-2b0df4c07092" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_CashCashEquivalentsAndFederalFundsSold"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CashAndDueFromBanks_15e2f6bd-f340-43fd-b514-df12ca895efa" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_CashAndDueFromBanks"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_CashCashEquivalentsAndFederalFundsSold_65cd6a54-35e1-4eae-8fb2-2b0df4c07092" xlink:to="loc_us-gaap_CashAndDueFromBanks_15e2f6bd-f340-43fd-b514-df12ca895efa" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestBearingDepositsInBanks_8a3b2838-79d0-47f5-8fff-5943acd14105" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_InterestBearingDepositsInBanks"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_CashCashEquivalentsAndFederalFundsSold_65cd6a54-35e1-4eae-8fb2-2b0df4c07092" xlink:to="loc_us-gaap_InterestBearingDepositsInBanks_8a3b2838-79d0-47f5-8fff-5943acd14105" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://ucbi.com/role/ConsolidatedStatementsofIncome" xlink:type="simple" xlink:href="ucbi-20241231.xsd#ConsolidatedStatementsofIncome"/>
  <link:calculationLink xlink:role="http://ucbi.com/role/ConsolidatedStatementsofIncome" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NoninterestIncome_c0388a7c-4908-4ded-9585-d051b60a1262" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_NoninterestIncome"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NoninterestIncomeOther_3510d409-4956-44b4-996c-53122e18d168" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_NoninterestIncomeOther"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NoninterestIncome_c0388a7c-4908-4ded-9585-d051b60a1262" xlink:to="loc_us-gaap_NoninterestIncomeOther_3510d409-4956-44b4-996c-53122e18d168" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InvestmentBankingAdvisoryBrokerageAndUnderwritingFeesAndCommissions_4aa3b0b3-4dbc-4cdd-a740-51257a882145" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_InvestmentBankingAdvisoryBrokerageAndUnderwritingFeesAndCommissions"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NoninterestIncome_c0388a7c-4908-4ded-9585-d051b60a1262" xlink:to="loc_us-gaap_InvestmentBankingAdvisoryBrokerageAndUnderwritingFeesAndCommissions_4aa3b0b3-4dbc-4cdd-a740-51257a882145" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GainLossOnSalesOfLoansNet_4c4a4d86-f921-46ca-93f0-f757a639c860" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_GainLossOnSalesOfLoansNet"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NoninterestIncome_c0388a7c-4908-4ded-9585-d051b60a1262" xlink:to="loc_us-gaap_GainLossOnSalesOfLoansNet_4c4a4d86-f921-46ca-93f0-f757a639c860" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_ucbi_OtherLendingAndLoanServicingFees_9016655a-4a08-4257-8125-f8ed24ffea07" xlink:href="ucbi-20241231.xsd#ucbi_OtherLendingAndLoanServicingFees"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NoninterestIncome_c0388a7c-4908-4ded-9585-d051b60a1262" xlink:to="loc_ucbi_OtherLendingAndLoanServicingFees_9016655a-4a08-4257-8125-f8ed24ffea07" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtSecuritiesAvailableForSaleRealizedGainLoss_31de9e5e-270d-4a61-a0c5-c03a35911e48" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DebtSecuritiesAvailableForSaleRealizedGainLoss"/>
    <link:calculationArc order="5" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NoninterestIncome_c0388a7c-4908-4ded-9585-d051b60a1262" xlink:to="loc_us-gaap_DebtSecuritiesAvailableForSaleRealizedGainLoss_31de9e5e-270d-4a61-a0c5-c03a35911e48" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NoninterestIncomeOtherOperatingIncome_92b32ddc-1982-4c7e-9ee9-35bf8939990c" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_NoninterestIncomeOtherOperatingIncome"/>
    <link:calculationArc order="6" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NoninterestIncome_c0388a7c-4908-4ded-9585-d051b60a1262" xlink:to="loc_us-gaap_NoninterestIncomeOtherOperatingIncome_92b32ddc-1982-4c7e-9ee9-35bf8939990c" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestIncomeExpenseNet_16cbdfce-c6b0-4cb3-8e4b-e87d0e9e5a94" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_InterestIncomeExpenseNet"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestAndDividendIncomeOperating_fc87b22d-10b8-4286-9e64-1137158c838b" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_InterestAndDividendIncomeOperating"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_InterestIncomeExpenseNet_16cbdfce-c6b0-4cb3-8e4b-e87d0e9e5a94" xlink:to="loc_us-gaap_InterestAndDividendIncomeOperating_fc87b22d-10b8-4286-9e64-1137158c838b" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestExpenseOperating_9b802b26-d73b-4b9f-9ff0-9ca7c6ee0184" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_InterestExpenseOperating"/>
    <link:calculationArc order="2" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_InterestIncomeExpenseNet_16cbdfce-c6b0-4cb3-8e4b-e87d0e9e5a94" xlink:to="loc_us-gaap_InterestExpenseOperating_9b802b26-d73b-4b9f-9ff0-9ca7c6ee0184" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_ec07a73f-ebdd-4a7c-a86e-b74394bc442f" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Revenues_b7bf6ac6-57ca-46f2-921d-536dbb7ff061" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_Revenues"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_ec07a73f-ebdd-4a7c-a86e-b74394bc442f" xlink:to="loc_us-gaap_Revenues_b7bf6ac6-57ca-46f2-921d-536dbb7ff061" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NoninterestExpense_6e13baac-14e6-4f62-97dd-f30f522a6dac" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_NoninterestExpense"/>
    <link:calculationArc order="2" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_ec07a73f-ebdd-4a7c-a86e-b74394bc442f" xlink:to="loc_us-gaap_NoninterestExpense_6e13baac-14e6-4f62-97dd-f30f522a6dac" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetIncomeLoss_c133476a-2ee1-418c-9d01-462d678a16e7" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_NetIncomeLoss"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_2fd441f0-be27-4bd2-9228-becf6411ffc1" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetIncomeLoss_c133476a-2ee1-418c-9d01-462d678a16e7" xlink:to="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_2fd441f0-be27-4bd2-9228-becf6411ffc1" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxExpenseBenefit_1ac6ca8a-a7a0-45dc-9c3b-2693a9f4c49a" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_IncomeTaxExpenseBenefit"/>
    <link:calculationArc order="2" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetIncomeLoss_c133476a-2ee1-418c-9d01-462d678a16e7" xlink:to="loc_us-gaap_IncomeTaxExpenseBenefit_1ac6ca8a-a7a0-45dc-9c3b-2693a9f4c49a" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestExpenseOperating_a038d745-1382-4d83-a011-5bac24605ac5" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_InterestExpenseOperating"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestExpenseDeposits_43ec8d77-5567-4a26-92e1-0c8738d2a4a1" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_InterestExpenseDeposits"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_InterestExpenseOperating_a038d745-1382-4d83-a011-5bac24605ac5" xlink:to="loc_us-gaap_InterestExpenseDeposits_43ec8d77-5567-4a26-92e1-0c8738d2a4a1" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestExpenseOtherShortTermBorrowings_51c895cf-b17e-4c34-8c49-78ed896e693c" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_InterestExpenseOtherShortTermBorrowings"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_InterestExpenseOperating_a038d745-1382-4d83-a011-5bac24605ac5" xlink:to="loc_us-gaap_InterestExpenseOtherShortTermBorrowings_51c895cf-b17e-4c34-8c49-78ed896e693c" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestExpenseFederalHomeLoanBankAndFederalReserveBankAdvancesShortTerm_10217b07-3687-40d3-b27d-cdcc5db6948f" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_InterestExpenseFederalHomeLoanBankAndFederalReserveBankAdvancesShortTerm"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_InterestExpenseOperating_a038d745-1382-4d83-a011-5bac24605ac5" xlink:to="loc_us-gaap_InterestExpenseFederalHomeLoanBankAndFederalReserveBankAdvancesShortTerm_10217b07-3687-40d3-b27d-cdcc5db6948f" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestExpenseLongTermDebt_3453b994-539e-43f7-ba87-bd0978818218" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_InterestExpenseLongTermDebt"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_InterestExpenseOperating_a038d745-1382-4d83-a011-5bac24605ac5" xlink:to="loc_us-gaap_InterestExpenseLongTermDebt_3453b994-539e-43f7-ba87-bd0978818218" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestAndDividendIncomeOperating_b675ca06-3ca8-44ee-a7f9-ac986e09ca7f" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_InterestAndDividendIncomeOperating"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestAndFeeIncomeLoansAndLeases_26e72c01-ba9e-43a2-9e16-90fff297b3dc" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_InterestAndFeeIncomeLoansAndLeases"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_InterestAndDividendIncomeOperating_b675ca06-3ca8-44ee-a7f9-ac986e09ca7f" xlink:to="loc_us-gaap_InterestAndFeeIncomeLoansAndLeases_26e72c01-ba9e-43a2-9e16-90fff297b3dc" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestIncomeSecuritiesTaxable_ad5b1a5a-9771-4ef0-8825-2e5a05a2d31b" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_InterestIncomeSecuritiesTaxable"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_InterestAndDividendIncomeOperating_b675ca06-3ca8-44ee-a7f9-ac986e09ca7f" xlink:to="loc_us-gaap_InterestIncomeSecuritiesTaxable_ad5b1a5a-9771-4ef0-8825-2e5a05a2d31b" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestIncomeSecuritiesTaxExempt_1ebe2e75-4bab-4920-996a-0a591d6e403a" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_InterestIncomeSecuritiesTaxExempt"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_InterestAndDividendIncomeOperating_b675ca06-3ca8-44ee-a7f9-ac986e09ca7f" xlink:to="loc_us-gaap_InterestIncomeSecuritiesTaxExempt_1ebe2e75-4bab-4920-996a-0a591d6e403a" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_ucbi_FederalFundsSoldCommercialPaperAndDepositsInBanks_b24c69b8-02e4-4422-baf3-394837880fcc" xlink:href="ucbi-20241231.xsd#ucbi_FederalFundsSoldCommercialPaperAndDepositsInBanks"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_InterestAndDividendIncomeOperating_b675ca06-3ca8-44ee-a7f9-ac986e09ca7f" xlink:to="loc_ucbi_FederalFundsSoldCommercialPaperAndDepositsInBanks_b24c69b8-02e4-4422-baf3-394837880fcc" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Revenues_90010da6-eb50-4b79-b97f-43c4142a4c2e" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_Revenues"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestIncomeExpenseAfterProvisionForLoanLoss_d4896ed5-f76b-4d17-af93-66762bed8eaf" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_InterestIncomeExpenseAfterProvisionForLoanLoss"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Revenues_90010da6-eb50-4b79-b97f-43c4142a4c2e" xlink:to="loc_us-gaap_InterestIncomeExpenseAfterProvisionForLoanLoss_d4896ed5-f76b-4d17-af93-66762bed8eaf" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NoninterestIncome_1e29720d-ed35-4ae7-b5e4-0da5fe2246ba" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_NoninterestIncome"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Revenues_90010da6-eb50-4b79-b97f-43c4142a4c2e" xlink:to="loc_us-gaap_NoninterestIncome_1e29720d-ed35-4ae7-b5e4-0da5fe2246ba" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestIncomeExpenseAfterProvisionForLoanLoss_bd062ff2-b193-4576-8bc7-2cc76ac0a415" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_InterestIncomeExpenseAfterProvisionForLoanLoss"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestIncomeExpenseNet_ab74ebe2-3d28-4b32-9eef-191f58729aee" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_InterestIncomeExpenseNet"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_InterestIncomeExpenseAfterProvisionForLoanLoss_bd062ff2-b193-4576-8bc7-2cc76ac0a415" xlink:to="loc_us-gaap_InterestIncomeExpenseNet_ab74ebe2-3d28-4b32-9eef-191f58729aee" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProvisionForLoanLeaseAndOtherLosses_dca68f8a-3180-425e-9e38-a56333f1395e" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ProvisionForLoanLeaseAndOtherLosses"/>
    <link:calculationArc order="2" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_InterestIncomeExpenseAfterProvisionForLoanLoss_bd062ff2-b193-4576-8bc7-2cc76ac0a415" xlink:to="loc_us-gaap_ProvisionForLoanLeaseAndOtherLosses_dca68f8a-3180-425e-9e38-a56333f1395e" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NoninterestExpense_edd7e31e-f07d-4222-9a96-eeea9bd6e8ad" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_NoninterestExpense"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LaborAndRelatedExpense_cb0eabf8-68d6-4ac8-91e1-0d455bd6e530" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_LaborAndRelatedExpense"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NoninterestExpense_edd7e31e-f07d-4222-9a96-eeea9bd6e8ad" xlink:to="loc_us-gaap_LaborAndRelatedExpense_cb0eabf8-68d6-4ac8-91e1-0d455bd6e530" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OccupancyNet_1c8c70cd-3c2f-4f37-af90-bf39b4f30568" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_OccupancyNet"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NoninterestExpense_edd7e31e-f07d-4222-9a96-eeea9bd6e8ad" xlink:to="loc_us-gaap_OccupancyNet_1c8c70cd-3c2f-4f37-af90-bf39b4f30568" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommunicationsAndInformationTechnology_58c78a93-8886-4359-874a-95fdb3f0ce55" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_CommunicationsAndInformationTechnology"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NoninterestExpense_edd7e31e-f07d-4222-9a96-eeea9bd6e8ad" xlink:to="loc_us-gaap_CommunicationsAndInformationTechnology_58c78a93-8886-4359-874a-95fdb3f0ce55" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProfessionalFees_13e9a3c4-5edc-4028-975d-a0fd423ee5f8" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ProfessionalFees"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NoninterestExpense_edd7e31e-f07d-4222-9a96-eeea9bd6e8ad" xlink:to="loc_us-gaap_ProfessionalFees_13e9a3c4-5edc-4028-975d-a0fd423ee5f8" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LoanPortfolioExpense_31a0962b-7def-49fd-876a-cf02cabacf88" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_LoanPortfolioExpense"/>
    <link:calculationArc order="5" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NoninterestExpense_edd7e31e-f07d-4222-9a96-eeea9bd6e8ad" xlink:to="loc_us-gaap_LoanPortfolioExpense_31a0962b-7def-49fd-876a-cf02cabacf88" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_ucbi_NoninterestExpenseOutsideServicesElectronicBanking_d93bf0f0-3732-4db7-bf72-8b91fe1d4993" xlink:href="ucbi-20241231.xsd#ucbi_NoninterestExpenseOutsideServicesElectronicBanking"/>
    <link:calculationArc order="6" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NoninterestExpense_edd7e31e-f07d-4222-9a96-eeea9bd6e8ad" xlink:to="loc_ucbi_NoninterestExpenseOutsideServicesElectronicBanking_d93bf0f0-3732-4db7-bf72-8b91fe1d4993" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SuppliesAndPostageExpense_4dea7ff6-db88-4f71-95dd-4e8b319445c3" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_SuppliesAndPostageExpense"/>
    <link:calculationArc order="7" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NoninterestExpense_edd7e31e-f07d-4222-9a96-eeea9bd6e8ad" xlink:to="loc_us-gaap_SuppliesAndPostageExpense_4dea7ff6-db88-4f71-95dd-4e8b319445c3" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_MarketingAndAdvertisingExpense_6235d0cd-e548-4647-be4e-6ec72d2e4956" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_MarketingAndAdvertisingExpense"/>
    <link:calculationArc order="8" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NoninterestExpense_edd7e31e-f07d-4222-9a96-eeea9bd6e8ad" xlink:to="loc_us-gaap_MarketingAndAdvertisingExpense_6235d0cd-e548-4647-be4e-6ec72d2e4956" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FederalDepositInsuranceCorporationPremiumExpense_3445d8e1-ac27-4c07-96fe-48ab369590b3" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FederalDepositInsuranceCorporationPremiumExpense"/>
    <link:calculationArc order="9" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NoninterestExpense_edd7e31e-f07d-4222-9a96-eeea9bd6e8ad" xlink:to="loc_us-gaap_FederalDepositInsuranceCorporationPremiumExpense_3445d8e1-ac27-4c07-96fe-48ab369590b3" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AmortizationOfIntangibleAssets_4a58c3b9-440e-4964-aeec-bf8bed22b95b" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_AmortizationOfIntangibleAssets"/>
    <link:calculationArc order="10" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NoninterestExpense_edd7e31e-f07d-4222-9a96-eeea9bd6e8ad" xlink:to="loc_us-gaap_AmortizationOfIntangibleAssets_4a58c3b9-440e-4964-aeec-bf8bed22b95b" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationAcquisitionRelatedCosts_c52c124a-b4f5-4839-b96e-65e32f033551" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_BusinessCombinationAcquisitionRelatedCosts"/>
    <link:calculationArc order="11" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NoninterestExpense_edd7e31e-f07d-4222-9a96-eeea9bd6e8ad" xlink:to="loc_us-gaap_BusinessCombinationAcquisitionRelatedCosts_c52c124a-b4f5-4839-b96e-65e32f033551" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherNoninterestExpense_88b77842-a476-47a4-b5e4-1f48deebdda2" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_OtherNoninterestExpense"/>
    <link:calculationArc order="12" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NoninterestExpense_edd7e31e-f07d-4222-9a96-eeea9bd6e8ad" xlink:to="loc_us-gaap_OtherNoninterestExpense_88b77842-a476-47a4-b5e4-1f48deebdda2" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://ucbi.com/role/ConsolidatedStatementsofComprehensiveIncomeLoss" xlink:type="simple" xlink:href="ucbi-20241231.xsd#ConsolidatedStatementsofComprehensiveIncomeLoss"/>
  <link:calculationLink xlink:role="http://ucbi.com/role/ConsolidatedStatementsofComprehensiveIncomeLoss" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesNetOfTax_81657994-fc45-49f7-a9c7-86ce1aaf8aa7" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesNetOfTax"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesBeforeTax_a59a2256-ecb5-4185-9d17-18de8eed67e7" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesBeforeTax"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesNetOfTax_81657994-fc45-49f7-a9c7-86ce1aaf8aa7" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesBeforeTax_a59a2256-ecb5-4185-9d17-18de8eed67e7" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesTax_5c77c66e-1d7d-42d7-9239-162da48f0351" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesTax"/>
    <link:calculationArc order="2" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesNetOfTax_81657994-fc45-49f7-a9c7-86ce1aaf8aa7" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesTax_5c77c66e-1d7d-42d7-9239-162da48f0351" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_ucbi_OtherComprehensiveIncomeLossAmortizationOfPriorServiceCostAndActuarialLossesIncludeNetPeriodicPensionCostForDefinedBenefitPensionPlanNetOfTax_e9de6848-20fb-4303-a413-59ecda61f827" xlink:href="ucbi-20241231.xsd#ucbi_OtherComprehensiveIncomeLossAmortizationOfPriorServiceCostAndActuarialLossesIncludeNetPeriodicPensionCostForDefinedBenefitPensionPlanNetOfTax"/>
    <link:loc xlink:type="locator" xlink:label="loc_ucbi_OtherComprehensiveIncomeLossAmortizationOfPriorServiceCostAndActuarialLossesIncludedInNetPeriodicPensionCostForDefinedBenefitPensionPlanBeforeTaxAmount_66421645-d83f-458b-9bda-b85331180e76" xlink:href="ucbi-20241231.xsd#ucbi_OtherComprehensiveIncomeLossAmortizationOfPriorServiceCostAndActuarialLossesIncludedInNetPeriodicPensionCostForDefinedBenefitPensionPlanBeforeTaxAmount"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_ucbi_OtherComprehensiveIncomeLossAmortizationOfPriorServiceCostAndActuarialLossesIncludeNetPeriodicPensionCostForDefinedBenefitPensionPlanNetOfTax_e9de6848-20fb-4303-a413-59ecda61f827" xlink:to="loc_ucbi_OtherComprehensiveIncomeLossAmortizationOfPriorServiceCostAndActuarialLossesIncludedInNetPeriodicPensionCostForDefinedBenefitPensionPlanBeforeTaxAmount_66421645-d83f-458b-9bda-b85331180e76" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_ucbi_OtherComprehensiveIncomeLossAmortizationOfPriorServiceCostAndActuarialLossesIncludedInNetPeriodicPensionCostForDefinedBenefitPensionPlanTaxExpenseBenefit1_79d0e3be-3654-4d5a-b170-aac05ff8540c" xlink:href="ucbi-20241231.xsd#ucbi_OtherComprehensiveIncomeLossAmortizationOfPriorServiceCostAndActuarialLossesIncludedInNetPeriodicPensionCostForDefinedBenefitPensionPlanTaxExpenseBenefit1"/>
    <link:calculationArc order="2" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_ucbi_OtherComprehensiveIncomeLossAmortizationOfPriorServiceCostAndActuarialLossesIncludeNetPeriodicPensionCostForDefinedBenefitPensionPlanNetOfTax_e9de6848-20fb-4303-a413-59ecda61f827" xlink:to="loc_ucbi_OtherComprehensiveIncomeLossAmortizationOfPriorServiceCostAndActuarialLossesIncludedInNetPeriodicPensionCostForDefinedBenefitPensionPlanTaxExpenseBenefit1_79d0e3be-3654-4d5a-b170-aac05ff8540c" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationBeforeTax_d29157ad-55e6-431e-be88-294c8ceea833" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationBeforeTax"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationBeforeTax_d1c83db4-140b-4f85-ba34-37e8de34d3fe" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationBeforeTax"/>
    <link:calculationArc order="1" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationBeforeTax_d29157ad-55e6-431e-be88-294c8ceea833" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationBeforeTax_d1c83db4-140b-4f85-ba34-37e8de34d3fe" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAndTax_195ae81a-1067-4456-b70a-633bdb39e11d" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAndTax"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationBeforeTax_d29157ad-55e6-431e-be88-294c8ceea833" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAndTax_195ae81a-1067-4456-b70a-633bdb39e11d" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodNetOfTax_334d79cd-eb17-4bc6-b1b4-10bc84660f6c" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodNetOfTax"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansNetUnamortizedGainLossArisingDuringPeriodBeforeTax_a457a3a6-c7c1-46c9-8878-17086127cb25" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansNetUnamortizedGainLossArisingDuringPeriodBeforeTax"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodNetOfTax_334d79cd-eb17-4bc6-b1b4-10bc84660f6c" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansNetUnamortizedGainLossArisingDuringPeriodBeforeTax_a457a3a6-c7c1-46c9-8878-17086127cb25" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodTax_feb99cd7-8d83-4d1c-bc93-f79753241052" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodTax"/>
    <link:calculationArc order="2" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodNetOfTax_334d79cd-eb17-4bc6-b1b4-10bc84660f6c" xlink:to="loc_us-gaap_OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodTax_feb99cd7-8d83-4d1c-bc93-f79753241052" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTaxParent_ddf1f397-3b1e-4c5a-abd0-849667e255a3" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTaxParent"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationAfterTax_23d2effc-81b8-4469-a7fc-1946ce92637e" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationAfterTax"/>
    <link:calculationArc order="1" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTaxParent_ddf1f397-3b1e-4c5a-abd0-849667e255a3" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationAfterTax_23d2effc-81b8-4469-a7fc-1946ce92637e" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAfterTax_28793230-07fc-4590-ab9b-14c5b170215d" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAfterTax"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTaxParent_ddf1f397-3b1e-4c5a-abd0-849667e255a3" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAfterTax_28793230-07fc-4590-ab9b-14c5b170215d" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_ucbi_OtherComprehensiveIncomeLossUnrealizedGainLossTransfersToHeldToMaturityAfterAdjustmentBeforeTax_dae2097c-7cf8-4328-8fe4-bdd3cdf1aeeb" xlink:href="ucbi-20241231.xsd#ucbi_OtherComprehensiveIncomeLossUnrealizedGainLossTransfersToHeldToMaturityAfterAdjustmentBeforeTax"/>
    <link:loc xlink:type="locator" xlink:label="loc_ucbi_OtherComprehensiveIncomeLossUnrealizedGainLossTransfersToHeldToMaturityBeforeTax_72ab4c0d-0e7f-4875-a05e-5b88e94d4608" xlink:href="ucbi-20241231.xsd#ucbi_OtherComprehensiveIncomeLossUnrealizedGainLossTransfersToHeldToMaturityBeforeTax"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_ucbi_OtherComprehensiveIncomeLossUnrealizedGainLossTransfersToHeldToMaturityAfterAdjustmentBeforeTax_dae2097c-7cf8-4328-8fe4-bdd3cdf1aeeb" xlink:to="loc_ucbi_OtherComprehensiveIncomeLossUnrealizedGainLossTransfersToHeldToMaturityBeforeTax_72ab4c0d-0e7f-4875-a05e-5b88e94d4608" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OciDebtSecuritiesAvailableForSaleTransferToHeldToMaturityAdjustmentFromAociForAmortizationOfGainLossBeforeTax_cf7f6e8b-681d-4b8c-92b4-05f1c92847a1" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_OciDebtSecuritiesAvailableForSaleTransferToHeldToMaturityAdjustmentFromAociForAmortizationOfGainLossBeforeTax"/>
    <link:calculationArc order="2" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_ucbi_OtherComprehensiveIncomeLossUnrealizedGainLossTransfersToHeldToMaturityAfterAdjustmentBeforeTax_dae2097c-7cf8-4328-8fe4-bdd3cdf1aeeb" xlink:to="loc_us-gaap_OciDebtSecuritiesAvailableForSaleTransferToHeldToMaturityAdjustmentFromAociForAmortizationOfGainLossBeforeTax_cf7f6e8b-681d-4b8c-92b4-05f1c92847a1" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_ucbi_OtherComprehensiveIncomeLossUnrealizedGainLossTransfersToHeldToMaturityAfterAdjustmentAfterTax_d27c39a2-d1dd-4aa8-a7ab-b0b17cc7061b" xlink:href="ucbi-20241231.xsd#ucbi_OtherComprehensiveIncomeLossUnrealizedGainLossTransfersToHeldToMaturityAfterAdjustmentAfterTax"/>
    <link:loc xlink:type="locator" xlink:label="loc_ucbi_OtherComprehensiveIncomeLossUnrealizedGainLossTransfersToHeldToMaturityAfterTax_e8042865-c1ef-4028-8585-471fb0bec941" xlink:href="ucbi-20241231.xsd#ucbi_OtherComprehensiveIncomeLossUnrealizedGainLossTransfersToHeldToMaturityAfterTax"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_ucbi_OtherComprehensiveIncomeLossUnrealizedGainLossTransfersToHeldToMaturityAfterAdjustmentAfterTax_d27c39a2-d1dd-4aa8-a7ab-b0b17cc7061b" xlink:to="loc_ucbi_OtherComprehensiveIncomeLossUnrealizedGainLossTransfersToHeldToMaturityAfterTax_e8042865-c1ef-4028-8585-471fb0bec941" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OciDebtSecuritiesAvailableForSaleTransferToHeldToMaturityAdjustmentFromAociForAmortizationOfGainLossAfterTax_f27273b4-f7af-4683-9aa3-d9ea6d07465f" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_OciDebtSecuritiesAvailableForSaleTransferToHeldToMaturityAdjustmentFromAociForAmortizationOfGainLossAfterTax"/>
    <link:calculationArc order="2" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_ucbi_OtherComprehensiveIncomeLossUnrealizedGainLossTransfersToHeldToMaturityAfterAdjustmentAfterTax_d27c39a2-d1dd-4aa8-a7ab-b0b17cc7061b" xlink:to="loc_us-gaap_OciDebtSecuritiesAvailableForSaleTransferToHeldToMaturityAdjustmentFromAociForAmortizationOfGainLossAfterTax_f27273b4-f7af-4683-9aa3-d9ea6d07465f" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax_bd8fc97b-5bc5-465b-bd96-b92ddb13f742" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentBeforeTax_3696e23f-d08f-4f6f-af46-6e07b49c4be0" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentBeforeTax"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax_bd8fc97b-5bc5-465b-bd96-b92ddb13f742" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentBeforeTax_3696e23f-d08f-4f6f-af46-6e07b49c4be0" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossAvailableForSaleSecuritiesTax_c5b26612-e9e0-4f89-aa58-f0b99012224c" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_OtherComprehensiveIncomeLossAvailableForSaleSecuritiesTax"/>
    <link:calculationArc order="2" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax_bd8fc97b-5bc5-465b-bd96-b92ddb13f742" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossAvailableForSaleSecuritiesTax_c5b26612-e9e0-4f89-aa58-f0b99012224c" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax_30491666-6738-4ac7-86e9-f6066d913a0b" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodTax_37aa3a05-cb45-4395-84e6-be8d2e683157" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodTax"/>
    <link:calculationArc order="1" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax_30491666-6738-4ac7-86e9-f6066d913a0b" xlink:to="loc_us-gaap_OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodTax_37aa3a05-cb45-4395-84e6-be8d2e683157" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_ucbi_OtherComprehensiveIncomeLossAmortizationOfPriorServiceCostAndActuarialLossesIncludedInNetPeriodicPensionCostForDefinedBenefitPensionPlanTaxExpenseBenefit1_1b589fbd-3e3a-44cd-aa84-70610c1cb9b8" xlink:href="ucbi-20241231.xsd#ucbi_OtherComprehensiveIncomeLossAmortizationOfPriorServiceCostAndActuarialLossesIncludedInNetPeriodicPensionCostForDefinedBenefitPensionPlanTaxExpenseBenefit1"/>
    <link:calculationArc order="2" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax_30491666-6738-4ac7-86e9-f6066d913a0b" xlink:to="loc_ucbi_OtherComprehensiveIncomeLossAmortizationOfPriorServiceCostAndActuarialLossesIncludedInNetPeriodicPensionCostForDefinedBenefitPensionPlanTaxExpenseBenefit1_1b589fbd-3e3a-44cd-aa84-70610c1cb9b8" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent_e5cc477d-bec3-4a27-8efd-c6b697bcbabd" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax_42ba5fa4-9f4f-4eb0-adea-cc5d3b7f2342" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent_e5cc477d-bec3-4a27-8efd-c6b697bcbabd" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax_42ba5fa4-9f4f-4eb0-adea-cc5d3b7f2342" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTaxParent_ef300fa5-7d64-4de1-b471-99a95d034e7f" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTaxParent"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent_e5cc477d-bec3-4a27-8efd-c6b697bcbabd" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTaxParent_ef300fa5-7d64-4de1-b471-99a95d034e7f" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentNetOfTaxPortionAttributableToParent_6cb8265c-88a5-4522-a374-af957b93a518" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentNetOfTaxPortionAttributableToParent"/>
    <link:calculationArc order="3" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent_e5cc477d-bec3-4a27-8efd-c6b697bcbabd" xlink:to="loc_us-gaap_OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentNetOfTaxPortionAttributableToParent_6cb8265c-88a5-4522-a374-af957b93a518" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_ucbi_OtherComprehensiveIncomeLossUnrealizedGainLossTransfersToHeldToMaturityAfterAdjustmentAfterTax_f1c9b05a-3f8b-47d8-b2fb-532c7aea747f" xlink:href="ucbi-20241231.xsd#ucbi_OtherComprehensiveIncomeLossUnrealizedGainLossTransfersToHeldToMaturityAfterAdjustmentAfterTax"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent_e5cc477d-bec3-4a27-8efd-c6b697bcbabd" xlink:to="loc_ucbi_OtherComprehensiveIncomeLossUnrealizedGainLossTransfersToHeldToMaturityAfterAdjustmentAfterTax_f1c9b05a-3f8b-47d8-b2fb-532c7aea747f" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ComprehensiveIncomeNetOfTax_14fea68a-6e38-4241-a308-86512b24fd6d" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ComprehensiveIncomeNetOfTax"/>
    <link:loc xlink:type="locator" xlink:label="loc_ucbi_ComprehensiveIncomeLossBeforeTax_3c1c0051-59ba-4d37-a8e0-02ad27bc8eba" xlink:href="ucbi-20241231.xsd#ucbi_ComprehensiveIncomeLossBeforeTax"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_ComprehensiveIncomeNetOfTax_14fea68a-6e38-4241-a308-86512b24fd6d" xlink:to="loc_ucbi_ComprehensiveIncomeLossBeforeTax_3c1c0051-59ba-4d37-a8e0-02ad27bc8eba" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_ucbi_ComprehensiveIncomeLossTax_b789863f-1017-49b6-aece-3458f5f38db4" xlink:href="ucbi-20241231.xsd#ucbi_ComprehensiveIncomeLossTax"/>
    <link:calculationArc order="2" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_ComprehensiveIncomeNetOfTax_14fea68a-6e38-4241-a308-86512b24fd6d" xlink:to="loc_ucbi_ComprehensiveIncomeLossTax_b789863f-1017-49b6-aece-3458f5f38db4" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_ucbi_ComprehensiveIncomeLossBeforeTax_ca832adb-d95b-4f44-bad2-bc8c320b7bf6" xlink:href="ucbi-20241231.xsd#ucbi_ComprehensiveIncomeLossBeforeTax"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_b03901eb-520b-4772-a1a6-b74b81dddd4e" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_ucbi_ComprehensiveIncomeLossBeforeTax_ca832adb-d95b-4f44-bad2-bc8c320b7bf6" xlink:to="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_b03901eb-520b-4772-a1a6-b74b81dddd4e" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossBeforeTaxPortionAttributableToParent_65dc814e-e82c-4df5-9d9c-cc0757ff01fc" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_OtherComprehensiveIncomeLossBeforeTaxPortionAttributableToParent"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_ucbi_ComprehensiveIncomeLossBeforeTax_ca832adb-d95b-4f44-bad2-bc8c320b7bf6" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossBeforeTaxPortionAttributableToParent_65dc814e-e82c-4df5-9d9c-cc0757ff01fc" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAfterTax_7a251416-cc73-467d-adc4-39927bd6b5e7" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAfterTax"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAndTax_73a65dd4-f5cb-4a3f-89dc-d6b86d107041" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAndTax"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAfterTax_7a251416-cc73-467d-adc4-39927bd6b5e7" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAndTax_73a65dd4-f5cb-4a3f-89dc-d6b86d107041" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationTax_1ef44c4a-3f98-4932-9dca-85e47cf586a1" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationTax"/>
    <link:calculationArc order="2" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAfterTax_7a251416-cc73-467d-adc4-39927bd6b5e7" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationTax_1ef44c4a-3f98-4932-9dca-85e47cf586a1" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_ucbi_OtherComprehensiveIncomeLossReclassificationAdjustmentAvailableForSaleToHeldToMaturityAfterTax_34c11d4f-70f9-479c-bbad-ff0f9f9586a4" xlink:href="ucbi-20241231.xsd#ucbi_OtherComprehensiveIncomeLossReclassificationAdjustmentAvailableForSaleToHeldToMaturityAfterTax"/>
    <link:loc xlink:type="locator" xlink:label="loc_ucbi_OtherComprehensiveIncomeLossReclassificationAdjustmentAvailableForSaleToHeldToMaturityTax_0450aab4-87e0-450e-8caf-03953f2a1b38" xlink:href="ucbi-20241231.xsd#ucbi_OtherComprehensiveIncomeLossReclassificationAdjustmentAvailableForSaleToHeldToMaturityTax"/>
    <link:calculationArc order="1" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_ucbi_OtherComprehensiveIncomeLossReclassificationAdjustmentAvailableForSaleToHeldToMaturityAfterTax_34c11d4f-70f9-479c-bbad-ff0f9f9586a4" xlink:to="loc_ucbi_OtherComprehensiveIncomeLossReclassificationAdjustmentAvailableForSaleToHeldToMaturityTax_0450aab4-87e0-450e-8caf-03953f2a1b38" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_ucbi_OtherComprehensiveIncomeLossReclassificationAdjustmentAvailableForSaleToHeldToMaturityBeforeTax_e8dab5c0-e4a0-41c8-8734-d5be51ffa6c7" xlink:href="ucbi-20241231.xsd#ucbi_OtherComprehensiveIncomeLossReclassificationAdjustmentAvailableForSaleToHeldToMaturityBeforeTax"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_ucbi_OtherComprehensiveIncomeLossReclassificationAdjustmentAvailableForSaleToHeldToMaturityAfterTax_34c11d4f-70f9-479c-bbad-ff0f9f9586a4" xlink:to="loc_ucbi_OtherComprehensiveIncomeLossReclassificationAdjustmentAvailableForSaleToHeldToMaturityBeforeTax_e8dab5c0-e4a0-41c8-8734-d5be51ffa6c7" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_ucbi_ComprehensiveIncomeLossTax_5f6bcdbe-de6f-4d38-a8cf-051f73aaaabc" xlink:href="ucbi-20241231.xsd#ucbi_ComprehensiveIncomeLossTax"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossTaxPortionAttributableToParent1_91c53fbf-bd29-41bb-aca4-a085415c8bfe" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_OtherComprehensiveIncomeLossTaxPortionAttributableToParent1"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_ucbi_ComprehensiveIncomeLossTax_5f6bcdbe-de6f-4d38-a8cf-051f73aaaabc" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossTaxPortionAttributableToParent1_91c53fbf-bd29-41bb-aca4-a085415c8bfe" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxExpenseBenefit_33762711-19eb-4528-bafb-190a72fad216" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_IncomeTaxExpenseBenefit"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_ucbi_ComprehensiveIncomeLossTax_5f6bcdbe-de6f-4d38-a8cf-051f73aaaabc" xlink:to="loc_us-gaap_IncomeTaxExpenseBenefit_33762711-19eb-4528-bafb-190a72fad216" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentNetOfTaxPortionAttributableToParent_1e19e3db-81ad-45fc-8449-397108aa0604" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentNetOfTaxPortionAttributableToParent"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodNetOfTax_4065c898-2aa0-45c3-b65a-e6e46b330b52" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodNetOfTax"/>
    <link:calculationArc order="1" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentNetOfTaxPortionAttributableToParent_1e19e3db-81ad-45fc-8449-397108aa0604" xlink:to="loc_us-gaap_OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodNetOfTax_4065c898-2aa0-45c3-b65a-e6e46b330b52" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_ucbi_OtherComprehensiveIncomeLossAmortizationOfPriorServiceCostAndActuarialLossesIncludeNetPeriodicPensionCostForDefinedBenefitPensionPlanNetOfTax_92e8b30d-4f56-407e-ac7a-0682837e076f" xlink:href="ucbi-20241231.xsd#ucbi_OtherComprehensiveIncomeLossAmortizationOfPriorServiceCostAndActuarialLossesIncludeNetPeriodicPensionCostForDefinedBenefitPensionPlanNetOfTax"/>
    <link:calculationArc order="2" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentNetOfTaxPortionAttributableToParent_1e19e3db-81ad-45fc-8449-397108aa0604" xlink:to="loc_ucbi_OtherComprehensiveIncomeLossAmortizationOfPriorServiceCostAndActuarialLossesIncludeNetPeriodicPensionCostForDefinedBenefitPensionPlanNetOfTax_92e8b30d-4f56-407e-ac7a-0682837e076f" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationAfterTax_79243a31-6327-4a12-873a-f57fa6d9654a" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationAfterTax"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationBeforeTax_d200c33c-5260-4e49-9333-faa6291aefb0" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationBeforeTax"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationAfterTax_79243a31-6327-4a12-873a-f57fa6d9654a" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationBeforeTax_d200c33c-5260-4e49-9333-faa6291aefb0" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationTax_a2d0100e-117a-417d-a047-85e97828360d" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationTax"/>
    <link:calculationArc order="2" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationAfterTax_79243a31-6327-4a12-873a-f57fa6d9654a" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationTax_a2d0100e-117a-417d-a047-85e97828360d" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_ucbi_OtherComprehensiveIncomeLossUnrealizedGainLossTransfersToHeldToMaturityAfterTax_8dc57e7e-cb77-4b6a-89f4-e1fafae14433" xlink:href="ucbi-20241231.xsd#ucbi_OtherComprehensiveIncomeLossUnrealizedGainLossTransfersToHeldToMaturityAfterTax"/>
    <link:loc xlink:type="locator" xlink:label="loc_ucbi_OtherComprehensiveIncomeLossUnrealizedGainLossTransfersToHeldToMaturityBeforeTax_58fecd3f-469b-4088-8205-3c5dd667e634" xlink:href="ucbi-20241231.xsd#ucbi_OtherComprehensiveIncomeLossUnrealizedGainLossTransfersToHeldToMaturityBeforeTax"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_ucbi_OtherComprehensiveIncomeLossUnrealizedGainLossTransfersToHeldToMaturityAfterTax_8dc57e7e-cb77-4b6a-89f4-e1fafae14433" xlink:to="loc_ucbi_OtherComprehensiveIncomeLossUnrealizedGainLossTransfersToHeldToMaturityBeforeTax_58fecd3f-469b-4088-8205-3c5dd667e634" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_ucbi_OtherComprehensiveIncomeLossUnrealizedGainLossTransfersToHeldToMaturityTax_fb5e290b-ca53-4c77-aff1-973e7bf54074" xlink:href="ucbi-20241231.xsd#ucbi_OtherComprehensiveIncomeLossUnrealizedGainLossTransfersToHeldToMaturityTax"/>
    <link:calculationArc order="2" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_ucbi_OtherComprehensiveIncomeLossUnrealizedGainLossTransfersToHeldToMaturityAfterTax_8dc57e7e-cb77-4b6a-89f4-e1fafae14433" xlink:to="loc_ucbi_OtherComprehensiveIncomeLossUnrealizedGainLossTransfersToHeldToMaturityTax_fb5e290b-ca53-4c77-aff1-973e7bf54074" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossAvailableForSaleSecuritiesTax_144f1900-8c1d-46a9-b935-df421fbdf924" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_OtherComprehensiveIncomeLossAvailableForSaleSecuritiesTax"/>
    <link:loc xlink:type="locator" xlink:label="loc_ucbi_OtherComprehensiveIncomeLossReclassificationAdjustmentAvailableForSaleToHeldToMaturityTax_e2c1aaa1-2367-43a4-9aa2-00db60b327c5" xlink:href="ucbi-20241231.xsd#ucbi_OtherComprehensiveIncomeLossReclassificationAdjustmentAvailableForSaleToHeldToMaturityTax"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OtherComprehensiveIncomeLossAvailableForSaleSecuritiesTax_144f1900-8c1d-46a9-b935-df421fbdf924" xlink:to="loc_ucbi_OtherComprehensiveIncomeLossReclassificationAdjustmentAvailableForSaleToHeldToMaturityTax_e2c1aaa1-2367-43a4-9aa2-00db60b327c5" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax_7a557485-82bf-4d03-b8f6-acca89cdbad1" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OtherComprehensiveIncomeLossAvailableForSaleSecuritiesTax_144f1900-8c1d-46a9-b935-df421fbdf924" xlink:to="loc_us-gaap_OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax_7a557485-82bf-4d03-b8f6-acca89cdbad1" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesTax_a321544f-5e45-4985-b05d-fdb2c9ed4b20" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesTax"/>
    <link:calculationArc order="3" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OtherComprehensiveIncomeLossAvailableForSaleSecuritiesTax_144f1900-8c1d-46a9-b935-df421fbdf924" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesTax_a321544f-5e45-4985-b05d-fdb2c9ed4b20" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossTaxPortionAttributableToParent1_de3a2d26-df90-4456-80c3-d5e79b7ff212" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_OtherComprehensiveIncomeLossTaxPortionAttributableToParent1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationTaxParent_97c51413-6158-4f08-a9a1-504222e9e305" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationTaxParent"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OtherComprehensiveIncomeLossTaxPortionAttributableToParent1_de3a2d26-df90-4456-80c3-d5e79b7ff212" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationTaxParent_97c51413-6158-4f08-a9a1-504222e9e305" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax_efaf0ab0-d16b-473d-b801-d978a5ea5e39" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax"/>
    <link:calculationArc order="2" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OtherComprehensiveIncomeLossTaxPortionAttributableToParent1_de3a2d26-df90-4456-80c3-d5e79b7ff212" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax_efaf0ab0-d16b-473d-b801-d978a5ea5e39" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_ucbi_OtherComprehensiveIncomeLossUnrealizedGainLossTransfersToHeldToMaturityAfterAdjustmentTax_c03f8cf7-32ce-4be3-b19f-78d98d845bca" xlink:href="ucbi-20241231.xsd#ucbi_OtherComprehensiveIncomeLossUnrealizedGainLossTransfersToHeldToMaturityAfterAdjustmentTax"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OtherComprehensiveIncomeLossTaxPortionAttributableToParent1_de3a2d26-df90-4456-80c3-d5e79b7ff212" xlink:to="loc_ucbi_OtherComprehensiveIncomeLossUnrealizedGainLossTransfersToHeldToMaturityAfterAdjustmentTax_c03f8cf7-32ce-4be3-b19f-78d98d845bca" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossAvailableForSaleSecuritiesTax_a5595592-9663-4c75-864d-f61a6ad90765" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_OtherComprehensiveIncomeLossAvailableForSaleSecuritiesTax"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OtherComprehensiveIncomeLossTaxPortionAttributableToParent1_de3a2d26-df90-4456-80c3-d5e79b7ff212" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossAvailableForSaleSecuritiesTax_a5595592-9663-4c75-864d-f61a6ad90765" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax_fb73c9af-61ec-4ffb-9eae-2d5e2bba0a64" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax_0e441073-a256-49ab-be8b-b2a960864fbc" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax_fb73c9af-61ec-4ffb-9eae-2d5e2bba0a64" xlink:to="loc_us-gaap_OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax_0e441073-a256-49ab-be8b-b2a960864fbc" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax_4da9e615-20aa-4a44-8995-f7c8536349c5" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax"/>
    <link:calculationArc order="2" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax_fb73c9af-61ec-4ffb-9eae-2d5e2bba0a64" xlink:to="loc_us-gaap_OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax_4da9e615-20aa-4a44-8995-f7c8536349c5" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentBeforeTax_622433da-8fd6-4ce0-81bf-d396ddb46838" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentBeforeTax"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax_61dcb895-77b5-4da4-a9d2-fe0e4bd31e5e" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentBeforeTax_622433da-8fd6-4ce0-81bf-d396ddb46838" xlink:to="loc_us-gaap_OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax_61dcb895-77b5-4da4-a9d2-fe0e4bd31e5e" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_ucbi_OtherComprehensiveIncomeLossReclassificationAdjustmentAvailableForSaleToHeldToMaturityBeforeTax_5cf1b745-e7c4-4183-859b-297221a4dd5e" xlink:href="ucbi-20241231.xsd#ucbi_OtherComprehensiveIncomeLossReclassificationAdjustmentAvailableForSaleToHeldToMaturityBeforeTax"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentBeforeTax_622433da-8fd6-4ce0-81bf-d396ddb46838" xlink:to="loc_ucbi_OtherComprehensiveIncomeLossReclassificationAdjustmentAvailableForSaleToHeldToMaturityBeforeTax_5cf1b745-e7c4-4183-859b-297221a4dd5e" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesBeforeTax_595a39fd-d2b1-4be0-abff-8d0f5ce75e22" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesBeforeTax"/>
    <link:calculationArc order="3" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentBeforeTax_622433da-8fd6-4ce0-81bf-d396ddb46838" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesBeforeTax_595a39fd-d2b1-4be0-abff-8d0f5ce75e22" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OciDebtSecuritiesAvailableForSaleTransferToHeldToMaturityAdjustmentFromAociForAmortizationOfGainLossAfterTax_b506af6e-ec92-480c-b3d2-f401984e0968" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_OciDebtSecuritiesAvailableForSaleTransferToHeldToMaturityAdjustmentFromAociForAmortizationOfGainLossAfterTax"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OciDebtSecuritiesAvailableForSaleTransferToHeldToMaturityAdjustmentFromAociForAmortizationOfGainLossBeforeTax_11cdcad7-4d19-4eee-bac9-361916b50d75" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_OciDebtSecuritiesAvailableForSaleTransferToHeldToMaturityAdjustmentFromAociForAmortizationOfGainLossBeforeTax"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OciDebtSecuritiesAvailableForSaleTransferToHeldToMaturityAdjustmentFromAociForAmortizationOfGainLossAfterTax_b506af6e-ec92-480c-b3d2-f401984e0968" xlink:to="loc_us-gaap_OciDebtSecuritiesAvailableForSaleTransferToHeldToMaturityAdjustmentFromAociForAmortizationOfGainLossBeforeTax_11cdcad7-4d19-4eee-bac9-361916b50d75" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OciDebtSecuritiesAvailableForSaleTransferToHeldToMaturityAdjustmentFromAociForAmortizationOfGainLossTax_2c03fd12-4ea3-4e62-93b4-93f7fac5268a" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_OciDebtSecuritiesAvailableForSaleTransferToHeldToMaturityAdjustmentFromAociForAmortizationOfGainLossTax"/>
    <link:calculationArc order="2" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OciDebtSecuritiesAvailableForSaleTransferToHeldToMaturityAdjustmentFromAociForAmortizationOfGainLossAfterTax_b506af6e-ec92-480c-b3d2-f401984e0968" xlink:to="loc_us-gaap_OciDebtSecuritiesAvailableForSaleTransferToHeldToMaturityAdjustmentFromAociForAmortizationOfGainLossTax_2c03fd12-4ea3-4e62-93b4-93f7fac5268a" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentBeforeTaxPortionAttributableToParent_158ddd54-5eff-4193-b01d-0ba0dd5685a7" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentBeforeTaxPortionAttributableToParent"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansNetUnamortizedGainLossArisingDuringPeriodBeforeTax_3a087f42-947e-4553-b9e0-e665683241b2" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansNetUnamortizedGainLossArisingDuringPeriodBeforeTax"/>
    <link:calculationArc order="1" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentBeforeTaxPortionAttributableToParent_158ddd54-5eff-4193-b01d-0ba0dd5685a7" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansNetUnamortizedGainLossArisingDuringPeriodBeforeTax_3a087f42-947e-4553-b9e0-e665683241b2" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_ucbi_OtherComprehensiveIncomeLossAmortizationOfPriorServiceCostAndActuarialLossesIncludedInNetPeriodicPensionCostForDefinedBenefitPensionPlanBeforeTaxAmount_0fcd47c5-7bc2-4aab-adc9-5d41e415cef9" xlink:href="ucbi-20241231.xsd#ucbi_OtherComprehensiveIncomeLossAmortizationOfPriorServiceCostAndActuarialLossesIncludedInNetPeriodicPensionCostForDefinedBenefitPensionPlanBeforeTaxAmount"/>
    <link:calculationArc order="2" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentBeforeTaxPortionAttributableToParent_158ddd54-5eff-4193-b01d-0ba0dd5685a7" xlink:to="loc_ucbi_OtherComprehensiveIncomeLossAmortizationOfPriorServiceCostAndActuarialLossesIncludedInNetPeriodicPensionCostForDefinedBenefitPensionPlanBeforeTaxAmount_0fcd47c5-7bc2-4aab-adc9-5d41e415cef9" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationTaxParent_74dd1f24-372e-4ac5-bb0d-f19359169f9a" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationTaxParent"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationTax_edcf537c-8a15-4a5a-8d0f-fbea5c073f1f" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationTax"/>
    <link:calculationArc order="1" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationTaxParent_74dd1f24-372e-4ac5-bb0d-f19359169f9a" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationTax_edcf537c-8a15-4a5a-8d0f-fbea5c073f1f" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationTax_308fd425-14c1-431d-9dc5-538f23e6b305" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationTax"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationTaxParent_74dd1f24-372e-4ac5-bb0d-f19359169f9a" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationTax_308fd425-14c1-431d-9dc5-538f23e6b305" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_ucbi_OtherComprehensiveIncomeLossUnrealizedGainLossTransfersToHeldToMaturityAfterAdjustmentTax_9b2c1a25-0d48-473d-8d9d-12edb39deb61" xlink:href="ucbi-20241231.xsd#ucbi_OtherComprehensiveIncomeLossUnrealizedGainLossTransfersToHeldToMaturityAfterAdjustmentTax"/>
    <link:loc xlink:type="locator" xlink:label="loc_ucbi_OtherComprehensiveIncomeLossUnrealizedGainLossTransfersToHeldToMaturityTax_21e75c20-90fe-4de2-9783-2772ba0950da" xlink:href="ucbi-20241231.xsd#ucbi_OtherComprehensiveIncomeLossUnrealizedGainLossTransfersToHeldToMaturityTax"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_ucbi_OtherComprehensiveIncomeLossUnrealizedGainLossTransfersToHeldToMaturityAfterAdjustmentTax_9b2c1a25-0d48-473d-8d9d-12edb39deb61" xlink:to="loc_ucbi_OtherComprehensiveIncomeLossUnrealizedGainLossTransfersToHeldToMaturityTax_21e75c20-90fe-4de2-9783-2772ba0950da" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OciDebtSecuritiesAvailableForSaleTransferToHeldToMaturityAdjustmentFromAociForAmortizationOfGainLossTax_b1184c70-a2a6-4543-bec4-601350861ad1" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_OciDebtSecuritiesAvailableForSaleTransferToHeldToMaturityAdjustmentFromAociForAmortizationOfGainLossTax"/>
    <link:calculationArc order="2" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_ucbi_OtherComprehensiveIncomeLossUnrealizedGainLossTransfersToHeldToMaturityAfterAdjustmentTax_9b2c1a25-0d48-473d-8d9d-12edb39deb61" xlink:to="loc_us-gaap_OciDebtSecuritiesAvailableForSaleTransferToHeldToMaturityAdjustmentFromAociForAmortizationOfGainLossTax_b1184c70-a2a6-4543-bec4-601350861ad1" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossBeforeTaxPortionAttributableToParent_53cc2eb5-a24d-4319-9e5f-ae040b376188" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_OtherComprehensiveIncomeLossBeforeTaxPortionAttributableToParent"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentBeforeTax_87d42cab-a0f0-4b22-99ed-67be78a45448" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentBeforeTax"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OtherComprehensiveIncomeLossBeforeTaxPortionAttributableToParent_53cc2eb5-a24d-4319-9e5f-ae040b376188" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentBeforeTax_87d42cab-a0f0-4b22-99ed-67be78a45448" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationBeforeTax_81f3d6ac-228b-413e-ab46-857f8f556fa7" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationBeforeTax"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OtherComprehensiveIncomeLossBeforeTaxPortionAttributableToParent_53cc2eb5-a24d-4319-9e5f-ae040b376188" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationBeforeTax_81f3d6ac-228b-413e-ab46-857f8f556fa7" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_ucbi_OtherComprehensiveIncomeLossUnrealizedGainLossTransfersToHeldToMaturityAfterAdjustmentBeforeTax_b9cbacdb-abf3-40e1-9646-5409755aa0fc" xlink:href="ucbi-20241231.xsd#ucbi_OtherComprehensiveIncomeLossUnrealizedGainLossTransfersToHeldToMaturityAfterAdjustmentBeforeTax"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OtherComprehensiveIncomeLossBeforeTaxPortionAttributableToParent_53cc2eb5-a24d-4319-9e5f-ae040b376188" xlink:to="loc_ucbi_OtherComprehensiveIncomeLossUnrealizedGainLossTransfersToHeldToMaturityAfterAdjustmentBeforeTax_b9cbacdb-abf3-40e1-9646-5409755aa0fc" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentBeforeTaxPortionAttributableToParent_e866c7fc-82f9-4b74-a203-513217c3b05c" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentBeforeTaxPortionAttributableToParent"/>
    <link:calculationArc order="4" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OtherComprehensiveIncomeLossBeforeTaxPortionAttributableToParent_53cc2eb5-a24d-4319-9e5f-ae040b376188" xlink:to="loc_us-gaap_OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentBeforeTaxPortionAttributableToParent_e866c7fc-82f9-4b74-a203-513217c3b05c" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://ucbi.com/role/ConsolidatedStatementsofComprehensiveIncomeLoss_1" xlink:type="simple" xlink:href="ucbi-20241231.xsd#ConsolidatedStatementsofComprehensiveIncomeLoss_1"/>
  <link:calculationLink xlink:role="http://ucbi.com/role/ConsolidatedStatementsofComprehensiveIncomeLoss_1" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax_1fceb95f-0c38-4cca-ab1e-fad3a92c1f2b" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax"/>
    <link:loc xlink:type="locator" xlink:label="loc_ucbi_OtherComprehensiveIncomeLossReclassificationAdjustmentAvailableForSaleToHeldToMaturityAfterTax_cee2f073-567f-46de-bb88-e5e2f00c82af" xlink:href="ucbi-20241231.xsd#ucbi_OtherComprehensiveIncomeLossReclassificationAdjustmentAvailableForSaleToHeldToMaturityAfterTax"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax_1fceb95f-0c38-4cca-ab1e-fad3a92c1f2b" xlink:to="loc_ucbi_OtherComprehensiveIncomeLossReclassificationAdjustmentAvailableForSaleToHeldToMaturityAfterTax_cee2f073-567f-46de-bb88-e5e2f00c82af" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesNetOfTax_87dafecf-834f-49d6-9f47-d2f88652b951" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesNetOfTax"/>
    <link:calculationArc order="2" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax_1fceb95f-0c38-4cca-ab1e-fad3a92c1f2b" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesNetOfTax_87dafecf-834f-49d6-9f47-d2f88652b951" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax_cb5d51a9-c31f-4c03-8b95-3b892a9b22de" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax_1fceb95f-0c38-4cca-ab1e-fad3a92c1f2b" xlink:to="loc_us-gaap_OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax_cb5d51a9-c31f-4c03-8b95-3b892a9b22de" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentNetOfTaxPortionAttributableToParent_b66aba75-8c21-45ae-bb2e-b121fd0fc854" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentNetOfTaxPortionAttributableToParent"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentBeforeTaxPortionAttributableToParent_09f70d0c-d341-4526-9592-a30982c5e3be" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentBeforeTaxPortionAttributableToParent"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentNetOfTaxPortionAttributableToParent_b66aba75-8c21-45ae-bb2e-b121fd0fc854" xlink:to="loc_us-gaap_OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentBeforeTaxPortionAttributableToParent_09f70d0c-d341-4526-9592-a30982c5e3be" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax_5b8d8b88-d721-45bd-9fa8-12d8dcd52339" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax"/>
    <link:calculationArc order="2" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentNetOfTaxPortionAttributableToParent_b66aba75-8c21-45ae-bb2e-b121fd0fc854" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax_5b8d8b88-d721-45bd-9fa8-12d8dcd52339" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTaxParent_e05cf7ce-ebf5-4829-8d18-8c5702ae2499" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTaxParent"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationBeforeTax_5f5b94d2-dd83-46bd-ba51-f3a6afe5f9a0" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationBeforeTax"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTaxParent_e05cf7ce-ebf5-4829-8d18-8c5702ae2499" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationBeforeTax_5f5b94d2-dd83-46bd-ba51-f3a6afe5f9a0" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationTaxParent_cc4fe748-2c8e-4be0-b491-15a3b026d4eb" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationTaxParent"/>
    <link:calculationArc order="2" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTaxParent_e05cf7ce-ebf5-4829-8d18-8c5702ae2499" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationTaxParent_cc4fe748-2c8e-4be0-b491-15a3b026d4eb" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ComprehensiveIncomeNetOfTax_34ebda59-3ce9-4066-b8f8-1a68422c992a" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ComprehensiveIncomeNetOfTax"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent_5870a9fc-e341-49b2-9413-88551484aff6" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_ComprehensiveIncomeNetOfTax_34ebda59-3ce9-4066-b8f8-1a68422c992a" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent_5870a9fc-e341-49b2-9413-88551484aff6" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetIncomeLoss_00dec4b2-7923-40dc-ac96-94d04055e6cf" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_NetIncomeLoss"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_ComprehensiveIncomeNetOfTax_34ebda59-3ce9-4066-b8f8-1a68422c992a" xlink:to="loc_us-gaap_NetIncomeLoss_00dec4b2-7923-40dc-ac96-94d04055e6cf" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent_04a3c902-8f8d-431c-8a6f-d5ee08af8a4b" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossBeforeTaxPortionAttributableToParent_1b20ffe5-db88-451a-ba64-4314cc923e7c" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_OtherComprehensiveIncomeLossBeforeTaxPortionAttributableToParent"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent_04a3c902-8f8d-431c-8a6f-d5ee08af8a4b" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossBeforeTaxPortionAttributableToParent_1b20ffe5-db88-451a-ba64-4314cc923e7c" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossTaxPortionAttributableToParent1_8cf1d78c-fe5b-4175-b292-a7834e805bc1" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_OtherComprehensiveIncomeLossTaxPortionAttributableToParent1"/>
    <link:calculationArc order="2" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent_04a3c902-8f8d-431c-8a6f-d5ee08af8a4b" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossTaxPortionAttributableToParent1_8cf1d78c-fe5b-4175-b292-a7834e805bc1" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://ucbi.com/role/ConsolidatedStatementsofCashFlows" xlink:type="simple" xlink:href="ucbi-20241231.xsd#ConsolidatedStatementsofCashFlows"/>
  <link:calculationLink xlink:role="http://ucbi.com/role/ConsolidatedStatementsofCashFlows" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect_69812aa8-4abc-4bf8-b3a5-186442e33ed7" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_58a86813-0563-4c8c-a290-f8c159d72307" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_NetCashProvidedByUsedInOperatingActivities"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect_69812aa8-4abc-4bf8-b3a5-186442e33ed7" xlink:to="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_58a86813-0563-4c8c-a290-f8c159d72307" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_633009bd-94dc-45f0-bb33-4c4f03566e6d" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_NetCashProvidedByUsedInInvestingActivities"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect_69812aa8-4abc-4bf8-b3a5-186442e33ed7" xlink:to="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_633009bd-94dc-45f0-bb33-4c4f03566e6d" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_bd31d4ee-94df-48ff-b573-8d017bd9b6f2" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_NetCashProvidedByUsedInFinancingActivities"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect_69812aa8-4abc-4bf8-b3a5-186442e33ed7" xlink:to="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_bd31d4ee-94df-48ff-b573-8d017bd9b6f2" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_f93b6163-0efe-4801-83e1-fa3f458973de" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_NetCashProvidedByUsedInOperatingActivities"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredIncomeTaxExpenseBenefit_eeb3e0fd-7ef8-4fbf-a9ea-4fdbb9248ead" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DeferredIncomeTaxExpenseBenefit"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_f93b6163-0efe-4801-83e1-fa3f458973de" xlink:to="loc_us-gaap_DeferredIncomeTaxExpenseBenefit_eeb3e0fd-7ef8-4fbf-a9ea-4fdbb9248ead" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInOtherOperatingAssets_e4ae91c2-7a7b-4e15-99c4-e5011728573f" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_IncreaseDecreaseInOtherOperatingAssets"/>
    <link:calculationArc order="2" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_f93b6163-0efe-4801-83e1-fa3f458973de" xlink:to="loc_us-gaap_IncreaseDecreaseInOtherOperatingAssets_e4ae91c2-7a7b-4e15-99c4-e5011728573f" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DepreciationAmortizationAndAccretionNet_f2cab2a5-5c92-46cc-bd4a-2e3260af65e5" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DepreciationAmortizationAndAccretionNet"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_f93b6163-0efe-4801-83e1-fa3f458973de" xlink:to="loc_us-gaap_DepreciationAmortizationAndAccretionNet_f2cab2a5-5c92-46cc-bd4a-2e3260af65e5" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GainsLossesOnExtinguishmentOfDebt_9c3ca6b4-4a0e-429e-81f1-906505d1c122" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_GainsLossesOnExtinguishmentOfDebt"/>
    <link:calculationArc order="4" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_f93b6163-0efe-4801-83e1-fa3f458973de" xlink:to="loc_us-gaap_GainsLossesOnExtinguishmentOfDebt_9c3ca6b4-4a0e-429e-81f1-906505d1c122" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInLoansHeldForSale_514251cb-f2e8-4f99-a18b-47b2c391dd02" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_IncreaseDecreaseInLoansHeldForSale"/>
    <link:calculationArc order="5" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_f93b6163-0efe-4801-83e1-fa3f458973de" xlink:to="loc_us-gaap_IncreaseDecreaseInLoansHeldForSale_514251cb-f2e8-4f99-a18b-47b2c391dd02" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensation_fb9ef090-660b-4cde-8641-34d26d64af4c" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ShareBasedCompensation"/>
    <link:calculationArc order="6" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_f93b6163-0efe-4801-83e1-fa3f458973de" xlink:to="loc_us-gaap_ShareBasedCompensation_fb9ef090-660b-4cde-8641-34d26d64af4c" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GainLossOnSaleOfLoansAndLeases_632ae464-7263-431b-a124-2475abd0f07f" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_GainLossOnSaleOfLoansAndLeases"/>
    <link:calculationArc order="7" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_f93b6163-0efe-4801-83e1-fa3f458973de" xlink:to="loc_us-gaap_GainLossOnSaleOfLoansAndLeases_632ae464-7263-431b-a124-2475abd0f07f" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetIncomeLoss_50cf3eac-78de-48fb-99d6-81ed64bc914c" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_NetIncomeLoss"/>
    <link:calculationArc order="8" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_f93b6163-0efe-4801-83e1-fa3f458973de" xlink:to="loc_us-gaap_NetIncomeLoss_50cf3eac-78de-48fb-99d6-81ed64bc914c" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RealizedInvestmentGainsLosses_7213590f-a143-4b04-99b2-73bbceefaad9" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_RealizedInvestmentGainsLosses"/>
    <link:calculationArc order="9" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_f93b6163-0efe-4801-83e1-fa3f458973de" xlink:to="loc_us-gaap_RealizedInvestmentGainsLosses_7213590f-a143-4b04-99b2-73bbceefaad9" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProvisionForLoanLeaseAndOtherLosses_6abf1855-4ca8-475d-bd23-2c6f29b76b28" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ProvisionForLoanLeaseAndOtherLosses"/>
    <link:calculationArc order="10" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_f93b6163-0efe-4801-83e1-fa3f458973de" xlink:to="loc_us-gaap_ProvisionForLoanLeaseAndOtherLosses_6abf1855-4ca8-475d-bd23-2c6f29b76b28" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInAccruedLiabilitiesAndOtherOperatingLiabilities_2a21965d-03f4-4687-8e96-91ccfba7e205" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_IncreaseDecreaseInAccruedLiabilitiesAndOtherOperatingLiabilities"/>
    <link:calculationArc order="11" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_f93b6163-0efe-4801-83e1-fa3f458973de" xlink:to="loc_us-gaap_IncreaseDecreaseInAccruedLiabilitiesAndOtherOperatingLiabilities_2a21965d-03f4-4687-8e96-91ccfba7e205" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GoodwillImpairmentLoss_3eb4bd01-d838-4215-bb95-23c507f4f342" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_GoodwillImpairmentLoss"/>
    <link:calculationArc order="12" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_f93b6163-0efe-4801-83e1-fa3f458973de" xlink:to="loc_us-gaap_GoodwillImpairmentLoss_3eb4bd01-d838-4215-bb95-23c507f4f342" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_c8262a06-d836-4aba-b99e-a3d76ef729ed" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_NetCashProvidedByUsedInFinancingActivities"/>
    <link:loc xlink:type="locator" xlink:label="loc_ucbi_ProceedsFromOtherFinancingActivities_fa98733a-c00a-471a-a601-daea7606fdaf" xlink:href="ucbi-20241231.xsd#ucbi_ProceedsFromOtherFinancingActivities"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_c8262a06-d836-4aba-b99e-a3d76ef729ed" xlink:to="loc_ucbi_ProceedsFromOtherFinancingActivities_fa98733a-c00a-471a-a601-daea7606fdaf" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RepaymentsOfOtherLongTermDebt_024ccbc6-750f-4898-a265-d062b78108c4" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_RepaymentsOfOtherLongTermDebt"/>
    <link:calculationArc order="2" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_c8262a06-d836-4aba-b99e-a3d76ef729ed" xlink:to="loc_us-gaap_RepaymentsOfOtherLongTermDebt_024ccbc6-750f-4898-a265-d062b78108c4" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_ucbi_PaymentsForOtherFinancingActivities_38d2d763-89f7-41d1-b26f-66480e084078" xlink:href="ucbi-20241231.xsd#ucbi_PaymentsForOtherFinancingActivities"/>
    <link:calculationArc order="3" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_c8262a06-d836-4aba-b99e-a3d76ef729ed" xlink:to="loc_ucbi_PaymentsForOtherFinancingActivities_38d2d763-89f7-41d1-b26f-66480e084078" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RepaymentsOfFederalHomeLoanBankBorrowings_95796ffd-27ac-4b96-90e0-6e3decb12509" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_RepaymentsOfFederalHomeLoanBankBorrowings"/>
    <link:calculationArc order="4" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_c8262a06-d836-4aba-b99e-a3d76ef729ed" xlink:to="loc_us-gaap_RepaymentsOfFederalHomeLoanBankBorrowings_95796ffd-27ac-4b96-90e0-6e3decb12509" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProceedsFromFederalHomeLoanBankBorrowings_cd1e092f-3f7f-4f5e-8077-92e5e54ee5d7" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ProceedsFromFederalHomeLoanBankBorrowings"/>
    <link:calculationArc order="5" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_c8262a06-d836-4aba-b99e-a3d76ef729ed" xlink:to="loc_us-gaap_ProceedsFromFederalHomeLoanBankBorrowings_cd1e092f-3f7f-4f5e-8077-92e5e54ee5d7" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInDeposits_dd70b34d-5e90-463d-acaa-b195a45abf27" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_IncreaseDecreaseInDeposits"/>
    <link:calculationArc order="6" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_c8262a06-d836-4aba-b99e-a3d76ef729ed" xlink:to="loc_us-gaap_IncreaseDecreaseInDeposits_dd70b34d-5e90-463d-acaa-b195a45abf27" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsOfDividendsPreferredStockAndPreferenceStock_054ac363-fdd7-4ac0-90b4-c8989b6f3283" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_PaymentsOfDividendsPreferredStockAndPreferenceStock"/>
    <link:calculationArc order="7" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_c8262a06-d836-4aba-b99e-a3d76ef729ed" xlink:to="loc_us-gaap_PaymentsOfDividendsPreferredStockAndPreferenceStock_054ac363-fdd7-4ac0-90b4-c8989b6f3283" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsOfDividendsCommonStock_578077c9-f270-4d61-ac14-46b68ad48fb0" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_PaymentsOfDividendsCommonStock"/>
    <link:calculationArc order="8" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_c8262a06-d836-4aba-b99e-a3d76ef729ed" xlink:to="loc_us-gaap_PaymentsOfDividendsCommonStock_578077c9-f270-4d61-ac14-46b68ad48fb0" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProceedsFromRepaymentsOfShortTermDebt_e75da3a9-de75-4154-8220-8e79d315bd80" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ProceedsFromRepaymentsOfShortTermDebt"/>
    <link:calculationArc order="9" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_c8262a06-d836-4aba-b99e-a3d76ef729ed" xlink:to="loc_us-gaap_ProceedsFromRepaymentsOfShortTermDebt_e75da3a9-de75-4154-8220-8e79d315bd80" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsForRepurchaseOfPreferredStockAndPreferenceStock_de34a507-2680-4fc3-bfeb-7b4637c61af7" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_PaymentsForRepurchaseOfPreferredStockAndPreferenceStock"/>
    <link:calculationArc order="10" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_c8262a06-d836-4aba-b99e-a3d76ef729ed" xlink:to="loc_us-gaap_PaymentsForRepurchaseOfPreferredStockAndPreferenceStock_de34a507-2680-4fc3-bfeb-7b4637c61af7" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_edf1d7e3-501d-414b-b800-7b1dbfe18e75" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_NetCashProvidedByUsedInInvestingActivities"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProceedsFromMaturitiesPrepaymentsAndCallsOfHeldToMaturitySecurities_4d656dbe-7c60-49bd-855c-1ba7a9a6ec92" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ProceedsFromMaturitiesPrepaymentsAndCallsOfHeldToMaturitySecurities"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_edf1d7e3-501d-414b-b800-7b1dbfe18e75" xlink:to="loc_us-gaap_ProceedsFromMaturitiesPrepaymentsAndCallsOfHeldToMaturitySecurities_4d656dbe-7c60-49bd-855c-1ba7a9a6ec92" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsToAcquireHeldToMaturitySecurities_802372c9-2742-4b48-97ab-e7314b87d9f2" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_PaymentsToAcquireHeldToMaturitySecurities"/>
    <link:calculationArc order="2" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_edf1d7e3-501d-414b-b800-7b1dbfe18e75" xlink:to="loc_us-gaap_PaymentsToAcquireHeldToMaturitySecurities_802372c9-2742-4b48-97ab-e7314b87d9f2" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProceedsFromSaleOfAvailableForSaleSecuritiesDebt_c83f0659-0413-45b8-b97e-3438681e6fbd" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ProceedsFromSaleOfAvailableForSaleSecuritiesDebt"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_edf1d7e3-501d-414b-b800-7b1dbfe18e75" xlink:to="loc_us-gaap_ProceedsFromSaleOfAvailableForSaleSecuritiesDebt_c83f0659-0413-45b8-b97e-3438681e6fbd" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities_86d1f63c-b49c-422f-bd52-db75fb93b2c9" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_edf1d7e3-501d-414b-b800-7b1dbfe18e75" xlink:to="loc_us-gaap_ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities_86d1f63c-b49c-422f-bd52-db75fb93b2c9" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsToAcquireAvailableForSaleSecuritiesDebt_bf320c19-3f2b-4671-8cfc-90b8ee381a6a" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_PaymentsToAcquireAvailableForSaleSecuritiesDebt"/>
    <link:calculationArc order="5" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_edf1d7e3-501d-414b-b800-7b1dbfe18e75" xlink:to="loc_us-gaap_PaymentsToAcquireAvailableForSaleSecuritiesDebt_bf320c19-3f2b-4671-8cfc-90b8ee381a6a" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsForProceedsFromLoansAndLeases_c586bf1c-327f-432a-a06b-8ea339e07c34" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_PaymentsForProceedsFromLoansAndLeases"/>
    <link:calculationArc order="6" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_edf1d7e3-501d-414b-b800-7b1dbfe18e75" xlink:to="loc_us-gaap_PaymentsForProceedsFromLoansAndLeases_c586bf1c-327f-432a-a06b-8ea339e07c34" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsToAcquireOtherInvestments_ad412238-c2ce-48d9-9f53-e926c2f557f6" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_PaymentsToAcquireOtherInvestments"/>
    <link:calculationArc order="7" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_edf1d7e3-501d-414b-b800-7b1dbfe18e75" xlink:to="loc_us-gaap_PaymentsToAcquireOtherInvestments_ad412238-c2ce-48d9-9f53-e926c2f557f6" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProceedsFromSaleOfOtherInvestments_2aa9ee11-9174-41bb-9b1f-17059a965014" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ProceedsFromSaleOfOtherInvestments"/>
    <link:calculationArc order="8" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_edf1d7e3-501d-414b-b800-7b1dbfe18e75" xlink:to="loc_us-gaap_ProceedsFromSaleOfOtherInvestments_2aa9ee11-9174-41bb-9b1f-17059a965014" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsToAcquireBusinessesNetOfCashAcquired_935f420c-39df-46cf-8c74-11fe30c533b4" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_PaymentsToAcquireBusinessesNetOfCashAcquired"/>
    <link:calculationArc order="9" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_edf1d7e3-501d-414b-b800-7b1dbfe18e75" xlink:to="loc_us-gaap_PaymentsToAcquireBusinessesNetOfCashAcquired_935f420c-39df-46cf-8c74-11fe30c533b4" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsToAcquirePropertyPlantAndEquipment_d2beab19-10df-44b0-a82e-4da6bb0bdeb5" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_PaymentsToAcquirePropertyPlantAndEquipment"/>
    <link:calculationArc order="10" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_edf1d7e3-501d-414b-b800-7b1dbfe18e75" xlink:to="loc_us-gaap_PaymentsToAcquirePropertyPlantAndEquipment_d2beab19-10df-44b0-a82e-4da6bb0bdeb5" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProceedsFromSaleOfPropertyPlantAndEquipment_92716b21-1d1e-48ae-8fee-474b09435121" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ProceedsFromSaleOfPropertyPlantAndEquipment"/>
    <link:calculationArc order="11" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_edf1d7e3-501d-414b-b800-7b1dbfe18e75" xlink:to="loc_us-gaap_ProceedsFromSaleOfPropertyPlantAndEquipment_92716b21-1d1e-48ae-8fee-474b09435121" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_ucbi_ProceedsFromOtherInvestingActivities_1581d339-4e86-4582-b313-96ebb1139482" xlink:href="ucbi-20241231.xsd#ucbi_ProceedsFromOtherInvestingActivities"/>
    <link:calculationArc order="12" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_edf1d7e3-501d-414b-b800-7b1dbfe18e75" xlink:to="loc_ucbi_ProceedsFromOtherInvestingActivities_1581d339-4e86-4582-b313-96ebb1139482" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_ucbi_NetCashPaidForBranchDisposal_5a813922-2d0c-45c9-84bd-d9e9b8a4f506" xlink:href="ucbi-20241231.xsd#ucbi_NetCashPaidForBranchDisposal"/>
    <link:calculationArc order="13" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_edf1d7e3-501d-414b-b800-7b1dbfe18e75" xlink:to="loc_ucbi_NetCashPaidForBranchDisposal_5a813922-2d0c-45c9-84bd-d9e9b8a4f506" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://ucbi.com/role/AcquisitionsandDivestituresScheduleofAcquisitiondatefairvalueofpurchasedassetsandassumedliabilitiesandsupplementaryinformationDetails" xlink:type="simple" xlink:href="ucbi-20241231.xsd#AcquisitionsandDivestituresScheduleofAcquisitiondatefairvalueofpurchasedassetsandassumedliabilitiesandsupplementaryinformationDetails"/>
  <link:calculationLink xlink:role="http://ucbi.com/role/AcquisitionsandDivestituresScheduleofAcquisitiondatefairvalueofpurchasedassetsandassumedliabilitiesandsupplementaryinformationDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssets_4f97715c-d727-4abc-a63a-e7d659eda644" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssets"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsReceivables_51f88307-fb58-48eb-83f4-c55ce08ac9e3" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsReceivables"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssets_4f97715c-d727-4abc-a63a-e7d659eda644" xlink:to="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsReceivables_51f88307-fb58-48eb-83f4-c55ce08ac9e3" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedPropertyPlantAndEquipment_f92bb86b-8c78-4e58-bb77-03206766e79a" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedPropertyPlantAndEquipment"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssets_4f97715c-d727-4abc-a63a-e7d659eda644" xlink:to="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedPropertyPlantAndEquipment_f92bb86b-8c78-4e58-bb77-03206766e79a" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsMarketableSecurities_db1362c4-650c-48fc-92ad-98909873f1dd" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsMarketableSecurities"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssets_4f97715c-d727-4abc-a63a-e7d659eda644" xlink:to="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsMarketableSecurities_db1362c4-650c-48fc-92ad-98909873f1dd" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedOtherNoncurrentAssets_2bde9619-4880-4972-8771-361f1fa808a0" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedOtherNoncurrentAssets"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssets_4f97715c-d727-4abc-a63a-e7d659eda644" xlink:to="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedOtherNoncurrentAssets_2bde9619-4880-4972-8771-361f1fa808a0" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_ucbi_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedBankOwnedLifeInsurance_d0ddd835-a59f-4ee0-a276-e196baccadd4" xlink:href="ucbi-20241231.xsd#ucbi_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedBankOwnedLifeInsurance"/>
    <link:calculationArc order="5" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssets_4f97715c-d727-4abc-a63a-e7d659eda644" xlink:to="loc_ucbi_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedBankOwnedLifeInsurance_d0ddd835-a59f-4ee0-a276-e196baccadd4" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCashAndEquivalents_e6537e98-5a79-4823-8ec0-76e3f20537a1" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCashAndEquivalents"/>
    <link:calculationArc order="6" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssets_4f97715c-d727-4abc-a63a-e7d659eda644" xlink:to="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCashAndEquivalents_e6537e98-5a79-4823-8ec0-76e3f20537a1" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibles_a885e441-6f84-4110-b9ae-0cda68c54c63" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibles"/>
    <link:calculationArc order="7" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssets_4f97715c-d727-4abc-a63a-e7d659eda644" xlink:to="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibles_a885e441-6f84-4110-b9ae-0cda68c54c63" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_ucbi_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLoansHeldForSale_6cd6c853-e563-4b33-b8b3-3c9c189d67db" xlink:href="ucbi-20241231.xsd#ucbi_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLoansHeldForSale"/>
    <link:calculationArc order="8" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssets_4f97715c-d727-4abc-a63a-e7d659eda644" xlink:to="loc_ucbi_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLoansHeldForSale_6cd6c853-e563-4b33-b8b3-3c9c189d67db" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivablePurchasedWithCreditDeteriorationAmountAtPurchasePrice_6389a7ca-525e-4b8c-8b47-562254ab9d67" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FinancingReceivablePurchasedWithCreditDeteriorationAmountAtPurchasePrice"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivablePurchasedWithCreditDeteriorationDiscountPremium_d03d7621-859e-47c2-86ba-dd1412de4e5d" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FinancingReceivablePurchasedWithCreditDeteriorationDiscountPremium"/>
    <link:calculationArc order="1" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_FinancingReceivablePurchasedWithCreditDeteriorationAmountAtPurchasePrice_6389a7ca-525e-4b8c-8b47-562254ab9d67" xlink:to="loc_us-gaap_FinancingReceivablePurchasedWithCreditDeteriorationDiscountPremium_d03d7621-859e-47c2-86ba-dd1412de4e5d" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivablePurchasedWithCreditDeteriorationAmountAtParValue_c56c23bb-9d4e-4598-b218-fa1a17f2b6a2" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FinancingReceivablePurchasedWithCreditDeteriorationAmountAtParValue"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_FinancingReceivablePurchasedWithCreditDeteriorationAmountAtPurchasePrice_6389a7ca-525e-4b8c-8b47-562254ab9d67" xlink:to="loc_us-gaap_FinancingReceivablePurchasedWithCreditDeteriorationAmountAtParValue_c56c23bb-9d4e-4598-b218-fa1a17f2b6a2" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableExcludingAccruedInterestPurchasedWithCreditDeteriorationAllowanceForCreditLossAtAcquisitionDate_80f50c14-d7c1-459a-98d1-bb91bab11e61" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FinancingReceivableExcludingAccruedInterestPurchasedWithCreditDeteriorationAllowanceForCreditLossAtAcquisitionDate"/>
    <link:calculationArc order="3" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_FinancingReceivablePurchasedWithCreditDeteriorationAmountAtPurchasePrice_6389a7ca-525e-4b8c-8b47-562254ab9d67" xlink:to="loc_us-gaap_FinancingReceivableExcludingAccruedInterestPurchasedWithCreditDeteriorationAllowanceForCreditLossAtAcquisitionDate_80f50c14-d7c1-459a-98d1-bb91bab11e61" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationConsiderationTransferred1_cddb0cc7-cea5-4019-a50b-5000db03eb8b" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_BusinessCombinationConsiderationTransferred1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ucbi_BusinessCombinationConsiderationTransferredConvertedStockOptions_0bc45e94-c750-4c36-8bb7-5f8df57e7478" xlink:href="ucbi-20241231.xsd#ucbi_BusinessCombinationConsiderationTransferredConvertedStockOptions"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_BusinessCombinationConsiderationTransferred1_cddb0cc7-cea5-4019-a50b-5000db03eb8b" xlink:to="loc_ucbi_BusinessCombinationConsiderationTransferredConvertedStockOptions_0bc45e94-c750-4c36-8bb7-5f8df57e7478" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsToAcquireBusinessesGross_a8ef29d6-1584-4705-be4d-b5812e5a6940" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_PaymentsToAcquireBusinessesGross"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_BusinessCombinationConsiderationTransferred1_cddb0cc7-cea5-4019-a50b-5000db03eb8b" xlink:to="loc_us-gaap_PaymentsToAcquireBusinessesGross_a8ef29d6-1584-4705-be4d-b5812e5a6940" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationConsiderationTransferredEquityInterestsIssuedAndIssuable_30498f78-604f-457e-9a90-23ee5b0cfe21" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_BusinessCombinationConsiderationTransferredEquityInterestsIssuedAndIssuable"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_BusinessCombinationConsiderationTransferred1_cddb0cc7-cea5-4019-a50b-5000db03eb8b" xlink:to="loc_us-gaap_BusinessCombinationConsiderationTransferredEquityInterestsIssuedAndIssuable_30498f78-604f-457e-9a90-23ee5b0cfe21" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLiabilities_52f87aef-a089-4757-b7a0-e1b117f82253" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLiabilities"/>
    <link:loc xlink:type="locator" xlink:label="loc_ucbi_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedDeposits_131cfba3-e505-4428-ac7b-a08bd049276d" xlink:href="ucbi-20241231.xsd#ucbi_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedDeposits"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLiabilities_52f87aef-a089-4757-b7a0-e1b117f82253" xlink:to="loc_ucbi_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedDeposits_131cfba3-e505-4428-ac7b-a08bd049276d" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNoncurrentLiabilitiesOther_c1d84c7f-cf90-4a36-aaa1-73c668d3a074" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNoncurrentLiabilitiesOther"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLiabilities_52f87aef-a089-4757-b7a0-e1b117f82253" xlink:to="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNoncurrentLiabilitiesOther_c1d84c7f-cf90-4a36-aaa1-73c668d3a074" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_ucbi_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedShortTermBorrowings_a2d0dd39-555f-4e56-bb87-3c12a022ddc5" xlink:href="ucbi-20241231.xsd#ucbi_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedShortTermBorrowings"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLiabilities_52f87aef-a089-4757-b7a0-e1b117f82253" xlink:to="loc_ucbi_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedShortTermBorrowings_a2d0dd39-555f-4e56-bb87-3c12a022ddc5" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_ucbi_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedFederalHomeLoanBankAdvances_8ec926bd-ceba-4dce-92e5-a548172b0ed5" xlink:href="ucbi-20241231.xsd#ucbi_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedFederalHomeLoanBankAdvances"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLiabilities_52f87aef-a089-4757-b7a0-e1b117f82253" xlink:to="loc_ucbi_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedFederalHomeLoanBankAdvances_8ec926bd-ceba-4dce-92e5-a548172b0ed5" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNet_1586d30c-8372-43f4-99de-06eb08161745" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNet"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssets_ea33aec7-9a9e-4f47-9dfa-f42ac837bf6d" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssets"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNet_1586d30c-8372-43f4-99de-06eb08161745" xlink:to="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssets_ea33aec7-9a9e-4f47-9dfa-f42ac837bf6d" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLiabilities_4ca60e7b-be01-4681-beb7-7715b6bca5b5" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLiabilities"/>
    <link:calculationArc order="2" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNet_1586d30c-8372-43f4-99de-06eb08161745" xlink:to="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLiabilities_4ca60e7b-be01-4681-beb7-7715b6bca5b5" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://ucbi.com/role/InvestmentsScheduleofCostBasisUnrealizedGainsandLossesandFairValueofHtmDebtSecuritiesDetails" xlink:type="simple" xlink:href="ucbi-20241231.xsd#InvestmentsScheduleofCostBasisUnrealizedGainsandLossesandFairValueofHtmDebtSecuritiesDetails"/>
  <link:calculationLink xlink:role="http://ucbi.com/role/InvestmentsScheduleofCostBasisUnrealizedGainsandLossesandFairValueofHtmDebtSecuritiesDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtSecuritiesHeldToMaturityExcludingAccruedInterestAfterAllowanceForCreditLoss_1747187a-8d05-4f4b-a45f-5c0a7652dc4f" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DebtSecuritiesHeldToMaturityExcludingAccruedInterestAfterAllowanceForCreditLoss"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingGain_378db902-27f8-49a2-8398-a7c7627e7531" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingGain"/>
    <link:calculationArc order="1" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DebtSecuritiesHeldToMaturityExcludingAccruedInterestAfterAllowanceForCreditLoss_1747187a-8d05-4f4b-a45f-5c0a7652dc4f" xlink:to="loc_us-gaap_HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingGain_378db902-27f8-49a2-8398-a7c7627e7531" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingLoss_92998bbb-f6fe-4764-90db-269f30abcbfd" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingLoss"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DebtSecuritiesHeldToMaturityExcludingAccruedInterestAfterAllowanceForCreditLoss_1747187a-8d05-4f4b-a45f-5c0a7652dc4f" xlink:to="loc_us-gaap_HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingLoss_92998bbb-f6fe-4764-90db-269f30abcbfd" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_HeldToMaturitySecuritiesFairValue_6c85978d-8d5c-4914-9af3-f863df3e1b49" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_HeldToMaturitySecuritiesFairValue"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DebtSecuritiesHeldToMaturityExcludingAccruedInterestAfterAllowanceForCreditLoss_1747187a-8d05-4f4b-a45f-5c0a7652dc4f" xlink:to="loc_us-gaap_HeldToMaturitySecuritiesFairValue_6c85978d-8d5c-4914-9af3-f863df3e1b49" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://ucbi.com/role/InvestmentsScheduleofCostBasisUnrealizedGainsandLossesandFairValueofAfsDebtSecuritiesDetails" xlink:type="simple" xlink:href="ucbi-20241231.xsd#InvestmentsScheduleofCostBasisUnrealizedGainsandLossesandFairValueofAfsDebtSecuritiesDetails"/>
  <link:calculationLink xlink:role="http://ucbi.com/role/InvestmentsScheduleofCostBasisUnrealizedGainsandLossesandFairValueofAfsDebtSecuritiesDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtSecuritiesAvailableForSaleAmortizedCostExcludingAccruedInterestAfterAllowanceForCreditLoss_17063dae-1803-450a-8803-c5070a8848c4" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DebtSecuritiesAvailableForSaleAmortizedCostExcludingAccruedInterestAfterAllowanceForCreditLoss"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax_38b5925d-a330-4054-8097-8b18f9211d26" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax"/>
    <link:calculationArc order="1" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DebtSecuritiesAvailableForSaleAmortizedCostExcludingAccruedInterestAfterAllowanceForCreditLoss_17063dae-1803-450a-8803-c5070a8848c4" xlink:to="loc_us-gaap_AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax_38b5925d-a330-4054-8097-8b18f9211d26" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax_a755316d-237a-4935-bcee-147c621968ea" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DebtSecuritiesAvailableForSaleAmortizedCostExcludingAccruedInterestAfterAllowanceForCreditLoss_17063dae-1803-450a-8803-c5070a8848c4" xlink:to="loc_us-gaap_AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax_a755316d-237a-4935-bcee-147c621968ea" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtSecuritiesAvailableForSaleExcludingAccruedInterest_fce299a3-4aaf-4145-84fa-27877c73c24d" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DebtSecuritiesAvailableForSaleExcludingAccruedInterest"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DebtSecuritiesAvailableForSaleAmortizedCostExcludingAccruedInterestAfterAllowanceForCreditLoss_17063dae-1803-450a-8803-c5070a8848c4" xlink:to="loc_us-gaap_DebtSecuritiesAvailableForSaleExcludingAccruedInterest_fce299a3-4aaf-4145-84fa-27877c73c24d" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://ucbi.com/role/InvestmentsScheduleofHtmDebtSecuritiesInAnUnrealizedLossPositionDetails" xlink:type="simple" xlink:href="ucbi-20241231.xsd#InvestmentsScheduleofHtmDebtSecuritiesInAnUnrealizedLossPositionDetails"/>
  <link:calculationLink xlink:role="http://ucbi.com/role/InvestmentsScheduleofHtmDebtSecuritiesInAnUnrealizedLossPositionDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_HeldToMaturitySecuritiesContinuousUnrealizedLossPositionFairValue_3e6ea664-597c-4229-a261-5b0377e4a46a" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_HeldToMaturitySecuritiesContinuousUnrealizedLossPositionFairValue"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_HeldToMaturitySecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsFairValue_07fcfbbb-67c7-4761-89bb-a277f08dbcda" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_HeldToMaturitySecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsFairValue"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_HeldToMaturitySecuritiesContinuousUnrealizedLossPositionFairValue_3e6ea664-597c-4229-a261-5b0377e4a46a" xlink:to="loc_us-gaap_HeldToMaturitySecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsFairValue_07fcfbbb-67c7-4761-89bb-a277f08dbcda" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_HeldToMaturitySecuritiesContinuousUnrealizedLossPositionTwelveMonthsOrLongerFairValue_7e540f45-f460-4fc9-ba55-20a0a0debe15" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_HeldToMaturitySecuritiesContinuousUnrealizedLossPositionTwelveMonthsOrLongerFairValue"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_HeldToMaturitySecuritiesContinuousUnrealizedLossPositionFairValue_3e6ea664-597c-4229-a261-5b0377e4a46a" xlink:to="loc_us-gaap_HeldToMaturitySecuritiesContinuousUnrealizedLossPositionTwelveMonthsOrLongerFairValue_7e540f45-f460-4fc9-ba55-20a0a0debe15" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_HeldToMaturitySecuritiesContinuousUnrealizedLossPositionAccumulatedLoss_3b6ac4de-9399-488a-a4d5-91625a524871" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_HeldToMaturitySecuritiesContinuousUnrealizedLossPositionAccumulatedLoss"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_HeldToMaturitySecuritiesContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss_56a05d6a-3d27-4247-b3ee-9bc639026cdb" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_HeldToMaturitySecuritiesContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_HeldToMaturitySecuritiesContinuousUnrealizedLossPositionAccumulatedLoss_3b6ac4de-9399-488a-a4d5-91625a524871" xlink:to="loc_us-gaap_HeldToMaturitySecuritiesContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss_56a05d6a-3d27-4247-b3ee-9bc639026cdb" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_HeldToMaturitySecuritiesContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss_40d12dfd-8dd3-4ec2-8290-ae3ebb0e0a67" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_HeldToMaturitySecuritiesContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_HeldToMaturitySecuritiesContinuousUnrealizedLossPositionAccumulatedLoss_3b6ac4de-9399-488a-a4d5-91625a524871" xlink:to="loc_us-gaap_HeldToMaturitySecuritiesContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss_40d12dfd-8dd3-4ec2-8290-ae3ebb0e0a67" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://ucbi.com/role/InvestmentsScheduleofAfsDebtSecuritiesInAnUnrealizedLossPositionDetails" xlink:type="simple" xlink:href="ucbi-20241231.xsd#InvestmentsScheduleofAfsDebtSecuritiesInAnUnrealizedLossPositionDetails"/>
  <link:calculationLink xlink:role="http://ucbi.com/role/InvestmentsScheduleofAfsDebtSecuritiesInAnUnrealizedLossPositionDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtSecuritiesAvailableForSaleUnrealizedLossPosition_f5fe7af3-dc5c-44c1-900f-85d42f57a231" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DebtSecuritiesAvailableForSaleUnrealizedLossPosition"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months_f7f5635f-3301-4cfe-a041-bf1da9a581be" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DebtSecuritiesAvailableForSaleUnrealizedLossPosition_f5fe7af3-dc5c-44c1-900f-85d42f57a231" xlink:to="loc_us-gaap_DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months_f7f5635f-3301-4cfe-a041-bf1da9a581be" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLonger_101cfe74-321b-4e1b-b284-dd488f2cb9b4" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLonger"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DebtSecuritiesAvailableForSaleUnrealizedLossPosition_f5fe7af3-dc5c-44c1-900f-85d42f57a231" xlink:to="loc_us-gaap_DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLonger_101cfe74-321b-4e1b-b284-dd488f2cb9b4" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtSecuritiesAvailableForSaleUnrealizedLossPositionAccumulatedLoss_6851a16f-d9b4-4684-b29d-d92f97949329" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DebtSecuritiesAvailableForSaleUnrealizedLossPositionAccumulatedLoss"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss_a3fe82c4-9a5f-4a34-831a-a6aaeefb6565" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DebtSecuritiesAvailableForSaleUnrealizedLossPositionAccumulatedLoss_6851a16f-d9b4-4684-b29d-d92f97949329" xlink:to="loc_us-gaap_DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss_a3fe82c4-9a5f-4a34-831a-a6aaeefb6565" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss_20878d66-f36d-488f-b11c-2695a86d35a8" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DebtSecuritiesAvailableForSaleUnrealizedLossPositionAccumulatedLoss_6851a16f-d9b4-4684-b29d-d92f97949329" xlink:to="loc_us-gaap_DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss_20878d66-f36d-488f-b11c-2695a86d35a8" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://ucbi.com/role/InvestmentsScheduleofAmortizedCostandFairValueofAfsAndHtmSecuritiesByContractualMaturityDetails" xlink:type="simple" xlink:href="ucbi-20241231.xsd#InvestmentsScheduleofAmortizedCostandFairValueofAfsAndHtmSecuritiesByContractualMaturityDetails"/>
  <link:calculationLink xlink:role="http://ucbi.com/role/InvestmentsScheduleofAmortizedCostandFairValueofAfsAndHtmSecuritiesByContractualMaturityDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_HeldToMaturitySecuritiesFairValue_afb5264c-94f5-4ea0-ad32-9b8759915c99" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_HeldToMaturitySecuritiesFairValue"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_HeldToMaturitySecuritiesDebtMaturitiesNextRollingTwelveMonthsFairValue_9950e0ba-688a-4da7-b018-261ed653b81a" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_HeldToMaturitySecuritiesDebtMaturitiesNextRollingTwelveMonthsFairValue"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_HeldToMaturitySecuritiesFairValue_afb5264c-94f5-4ea0-ad32-9b8759915c99" xlink:to="loc_us-gaap_HeldToMaturitySecuritiesDebtMaturitiesNextRollingTwelveMonthsFairValue_9950e0ba-688a-4da7-b018-261ed653b81a" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_HeldToMaturitySecuritiesDebtMaturitiesRollingYearTwoThroughFiveFairValue_ae0b0802-c0fc-4939-9f8b-f92112a5e2a1" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_HeldToMaturitySecuritiesDebtMaturitiesRollingYearTwoThroughFiveFairValue"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_HeldToMaturitySecuritiesFairValue_afb5264c-94f5-4ea0-ad32-9b8759915c99" xlink:to="loc_us-gaap_HeldToMaturitySecuritiesDebtMaturitiesRollingYearTwoThroughFiveFairValue_ae0b0802-c0fc-4939-9f8b-f92112a5e2a1" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_HeldToMaturitySecuritiesDebtMaturitiesRollingYearSixThroughTenFairValue_5cd6ab92-f2c1-411c-b726-66d0b5ec10ba" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_HeldToMaturitySecuritiesDebtMaturitiesRollingYearSixThroughTenFairValue"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_HeldToMaturitySecuritiesFairValue_afb5264c-94f5-4ea0-ad32-9b8759915c99" xlink:to="loc_us-gaap_HeldToMaturitySecuritiesDebtMaturitiesRollingYearSixThroughTenFairValue_5cd6ab92-f2c1-411c-b726-66d0b5ec10ba" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_HeldToMaturitySecuritiesDebtMaturitiesRollingAfterTenYearsFairValue_99b8235e-145e-4bcc-a708-19a0df0939f6" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_HeldToMaturitySecuritiesDebtMaturitiesRollingAfterTenYearsFairValue"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_HeldToMaturitySecuritiesFairValue_afb5264c-94f5-4ea0-ad32-9b8759915c99" xlink:to="loc_us-gaap_HeldToMaturitySecuritiesDebtMaturitiesRollingAfterTenYearsFairValue_99b8235e-145e-4bcc-a708-19a0df0939f6" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_HeldToMaturitySecuritiesDebtMaturitiesWithoutSingleMaturityDateFairValue_fed372b6-d9a5-456e-9def-66a474b6502c" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_HeldToMaturitySecuritiesDebtMaturitiesWithoutSingleMaturityDateFairValue"/>
    <link:calculationArc order="5" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_HeldToMaturitySecuritiesFairValue_afb5264c-94f5-4ea0-ad32-9b8759915c99" xlink:to="loc_us-gaap_HeldToMaturitySecuritiesDebtMaturitiesWithoutSingleMaturityDateFairValue_fed372b6-d9a5-456e-9def-66a474b6502c" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtSecuritiesAvailableForSaleAmortizedCostExcludingAccruedInterestAfterAllowanceForCreditLoss_b93edafc-c572-42c7-a75c-0b4e6cb2b38e" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DebtSecuritiesAvailableForSaleAmortizedCostExcludingAccruedInterestAfterAllowanceForCreditLoss"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesNextRollingTwelveMonthsAmortizedCostBasis_0a7e77d9-30e2-4d49-a410-4192e7b3f5c4" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_AvailableForSaleSecuritiesDebtMaturitiesNextRollingTwelveMonthsAmortizedCostBasis"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DebtSecuritiesAvailableForSaleAmortizedCostExcludingAccruedInterestAfterAllowanceForCreditLoss_b93edafc-c572-42c7-a75c-0b4e6cb2b38e" xlink:to="loc_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesNextRollingTwelveMonthsAmortizedCostBasis_0a7e77d9-30e2-4d49-a410-4192e7b3f5c4" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesRollingYearSixThroughTenAmortizedCostBasis_0a9f67a1-2399-4abc-937b-ba5129e33bd5" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_AvailableForSaleSecuritiesDebtMaturitiesRollingYearSixThroughTenAmortizedCostBasis"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DebtSecuritiesAvailableForSaleAmortizedCostExcludingAccruedInterestAfterAllowanceForCreditLoss_b93edafc-c572-42c7-a75c-0b4e6cb2b38e" xlink:to="loc_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesRollingYearSixThroughTenAmortizedCostBasis_0a9f67a1-2399-4abc-937b-ba5129e33bd5" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesWithoutSingleMaturityDateAmortizedCost_449b5120-b4fa-4982-b7ab-9a0c5be71001" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_AvailableForSaleSecuritiesDebtMaturitiesWithoutSingleMaturityDateAmortizedCost"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DebtSecuritiesAvailableForSaleAmortizedCostExcludingAccruedInterestAfterAllowanceForCreditLoss_b93edafc-c572-42c7-a75c-0b4e6cb2b38e" xlink:to="loc_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesWithoutSingleMaturityDateAmortizedCost_449b5120-b4fa-4982-b7ab-9a0c5be71001" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesRollingYearTwoThroughFiveAmortizedCostBasis_cc518336-8280-4946-aa42-0e0b9e016527" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_AvailableForSaleSecuritiesDebtMaturitiesRollingYearTwoThroughFiveAmortizedCostBasis"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DebtSecuritiesAvailableForSaleAmortizedCostExcludingAccruedInterestAfterAllowanceForCreditLoss_b93edafc-c572-42c7-a75c-0b4e6cb2b38e" xlink:to="loc_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesRollingYearTwoThroughFiveAmortizedCostBasis_cc518336-8280-4946-aa42-0e0b9e016527" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesRollingAfterYearTenAmortizedCostBasis_1ea6723d-16e8-4a4f-a94c-1527d349641a" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_AvailableForSaleSecuritiesDebtMaturitiesRollingAfterYearTenAmortizedCostBasis"/>
    <link:calculationArc order="5" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DebtSecuritiesAvailableForSaleAmortizedCostExcludingAccruedInterestAfterAllowanceForCreditLoss_b93edafc-c572-42c7-a75c-0b4e6cb2b38e" xlink:to="loc_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesRollingAfterYearTenAmortizedCostBasis_1ea6723d-16e8-4a4f-a94c-1527d349641a" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtSecuritiesHeldToMaturityExcludingAccruedInterestAfterAllowanceForCreditLoss_76a1804f-6438-4e51-b82f-332a07dd885f" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DebtSecuritiesHeldToMaturityExcludingAccruedInterestAfterAllowanceForCreditLoss"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtSecuritiesHeldToMaturityAmortizedCostExcludingAccruedInterestAfterAllowanceForCreditLossMaturityWithoutSingleMaturityDate_74effae8-506e-460b-9c4d-75cf72baf79e" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DebtSecuritiesHeldToMaturityAmortizedCostExcludingAccruedInterestAfterAllowanceForCreditLossMaturityWithoutSingleMaturityDate"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DebtSecuritiesHeldToMaturityExcludingAccruedInterestAfterAllowanceForCreditLoss_76a1804f-6438-4e51-b82f-332a07dd885f" xlink:to="loc_us-gaap_DebtSecuritiesHeldToMaturityAmortizedCostExcludingAccruedInterestAfterAllowanceForCreditLossMaturityWithoutSingleMaturityDate_74effae8-506e-460b-9c4d-75cf72baf79e" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtSecuritiesHeldToMaturityAmortizedCostExcludingAccruedInterestAfterAllowanceForCreditLossMaturityAllocatedAndSingleMaturityDateAfterYearOneThroughFive_78d51a82-8fb3-4dae-92f3-e35b9382f444" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DebtSecuritiesHeldToMaturityAmortizedCostExcludingAccruedInterestAfterAllowanceForCreditLossMaturityAllocatedAndSingleMaturityDateAfterYearOneThroughFive"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DebtSecuritiesHeldToMaturityExcludingAccruedInterestAfterAllowanceForCreditLoss_76a1804f-6438-4e51-b82f-332a07dd885f" xlink:to="loc_us-gaap_DebtSecuritiesHeldToMaturityAmortizedCostExcludingAccruedInterestAfterAllowanceForCreditLossMaturityAllocatedAndSingleMaturityDateAfterYearOneThroughFive_78d51a82-8fb3-4dae-92f3-e35b9382f444" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtSecuritiesHeldToMaturityAmortizedCostExcludingAccruedInterestAfterAllowanceForCreditLossMaturityAllocatedAndSingleMaturityDateYearOne_144e0582-7c7e-46b9-8b36-6148811825e4" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DebtSecuritiesHeldToMaturityAmortizedCostExcludingAccruedInterestAfterAllowanceForCreditLossMaturityAllocatedAndSingleMaturityDateYearOne"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DebtSecuritiesHeldToMaturityExcludingAccruedInterestAfterAllowanceForCreditLoss_76a1804f-6438-4e51-b82f-332a07dd885f" xlink:to="loc_us-gaap_DebtSecuritiesHeldToMaturityAmortizedCostExcludingAccruedInterestAfterAllowanceForCreditLossMaturityAllocatedAndSingleMaturityDateYearOne_144e0582-7c7e-46b9-8b36-6148811825e4" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtSecuritiesHeldToMaturityAmortizedCostExcludingAccruedInterestAfterAllowanceForCreditLossMaturityAllocatedAndSingleMaturityDateAfterYear10_1824315d-8d16-4208-9e5c-9670e225518f" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DebtSecuritiesHeldToMaturityAmortizedCostExcludingAccruedInterestAfterAllowanceForCreditLossMaturityAllocatedAndSingleMaturityDateAfterYear10"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DebtSecuritiesHeldToMaturityExcludingAccruedInterestAfterAllowanceForCreditLoss_76a1804f-6438-4e51-b82f-332a07dd885f" xlink:to="loc_us-gaap_DebtSecuritiesHeldToMaturityAmortizedCostExcludingAccruedInterestAfterAllowanceForCreditLossMaturityAllocatedAndSingleMaturityDateAfterYear10_1824315d-8d16-4208-9e5c-9670e225518f" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtSecuritiesHeldToMaturityAmortizedCostExcludingAccruedInterestAfterAllowanceForCreditLossMaturityAllocatedAndSingleMaturityDateAfterYear5Through10_153329d8-99f3-4167-9111-2d5e096e3e29" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DebtSecuritiesHeldToMaturityAmortizedCostExcludingAccruedInterestAfterAllowanceForCreditLossMaturityAllocatedAndSingleMaturityDateAfterYear5Through10"/>
    <link:calculationArc order="5" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DebtSecuritiesHeldToMaturityExcludingAccruedInterestAfterAllowanceForCreditLoss_76a1804f-6438-4e51-b82f-332a07dd885f" xlink:to="loc_us-gaap_DebtSecuritiesHeldToMaturityAmortizedCostExcludingAccruedInterestAfterAllowanceForCreditLossMaturityAllocatedAndSingleMaturityDateAfterYear5Through10_153329d8-99f3-4167-9111-2d5e096e3e29" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtSecuritiesAvailableForSaleExcludingAccruedInterest_45b66bdb-7730-4e7c-9807-da8c3ad872c6" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DebtSecuritiesAvailableForSaleExcludingAccruedInterest"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesNextRollingTwelveMonthsFairValue_21f8a19b-ae00-4017-93b1-755427c37475" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_AvailableForSaleSecuritiesDebtMaturitiesNextRollingTwelveMonthsFairValue"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DebtSecuritiesAvailableForSaleExcludingAccruedInterest_45b66bdb-7730-4e7c-9807-da8c3ad872c6" xlink:to="loc_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesNextRollingTwelveMonthsFairValue_21f8a19b-ae00-4017-93b1-755427c37475" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesRollingYearTwoThroughFiveFairValue_d1e78ac8-f498-4c10-9a09-d4af867a7c1f" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_AvailableForSaleSecuritiesDebtMaturitiesRollingYearTwoThroughFiveFairValue"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DebtSecuritiesAvailableForSaleExcludingAccruedInterest_45b66bdb-7730-4e7c-9807-da8c3ad872c6" xlink:to="loc_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesRollingYearTwoThroughFiveFairValue_d1e78ac8-f498-4c10-9a09-d4af867a7c1f" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesRollingYearSixThroughTenFairValue_b56f13d7-fcfa-45a2-bf94-17e0573496a3" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_AvailableForSaleSecuritiesDebtMaturitiesRollingYearSixThroughTenFairValue"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DebtSecuritiesAvailableForSaleExcludingAccruedInterest_45b66bdb-7730-4e7c-9807-da8c3ad872c6" xlink:to="loc_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesRollingYearSixThroughTenFairValue_b56f13d7-fcfa-45a2-bf94-17e0573496a3" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesRollingAfterYearTenFairValue_f6d3032f-047b-4152-97ae-42bcc29dc762" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_AvailableForSaleSecuritiesDebtMaturitiesRollingAfterYearTenFairValue"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DebtSecuritiesAvailableForSaleExcludingAccruedInterest_45b66bdb-7730-4e7c-9807-da8c3ad872c6" xlink:to="loc_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesRollingAfterYearTenFairValue_f6d3032f-047b-4152-97ae-42bcc29dc762" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesWithoutSingleMaturityDateFairValue_3493e74f-ebb9-409a-9991-c22259ba6314" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_AvailableForSaleSecuritiesDebtMaturitiesWithoutSingleMaturityDateFairValue"/>
    <link:calculationArc order="5" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DebtSecuritiesAvailableForSaleExcludingAccruedInterest_45b66bdb-7730-4e7c-9807-da8c3ad872c6" xlink:to="loc_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesWithoutSingleMaturityDateFairValue_3493e74f-ebb9-409a-9991-c22259ba6314" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://ucbi.com/role/InvestmentsScheduleofSecuritiesSalesActivityDetails" xlink:type="simple" xlink:href="ucbi-20241231.xsd#InvestmentsScheduleofSecuritiesSalesActivityDetails"/>
  <link:calculationLink xlink:role="http://ucbi.com/role/InvestmentsScheduleofSecuritiesSalesActivityDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtSecuritiesAvailableForSaleRealizedGainLoss_3b165ac8-8902-4b66-b9d0-2c59104395e3" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DebtSecuritiesAvailableForSaleRealizedGainLoss"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtSecuritiesAvailableForSaleRealizedGain_154dda2b-1f06-4b87-a3e6-74de26c7fba1" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DebtSecuritiesAvailableForSaleRealizedGain"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DebtSecuritiesAvailableForSaleRealizedGainLoss_3b165ac8-8902-4b66-b9d0-2c59104395e3" xlink:to="loc_us-gaap_DebtSecuritiesAvailableForSaleRealizedGain_154dda2b-1f06-4b87-a3e6-74de26c7fba1" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtSecuritiesAvailableForSaleRealizedLoss_4c0aba6e-54ba-47e4-963a-13f157a52918" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DebtSecuritiesAvailableForSaleRealizedLoss"/>
    <link:calculationArc order="2" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DebtSecuritiesAvailableForSaleRealizedGainLoss_3b165ac8-8902-4b66-b9d0-2c59104395e3" xlink:to="loc_us-gaap_DebtSecuritiesAvailableForSaleRealizedLoss_4c0aba6e-54ba-47e4-963a-13f157a52918" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://ucbi.com/role/LoansandLeasesandAllowanceforCreditLossesScheduleofMajorclassificationsofloanandleaseportfolioDetails" xlink:type="simple" xlink:href="ucbi-20241231.xsd#LoansandLeasesandAllowanceforCreditLossesScheduleofMajorclassificationsofloanandleaseportfolioDetails"/>
  <link:calculationLink xlink:role="http://ucbi.com/role/LoansandLeasesandAllowanceforCreditLossesScheduleofMajorclassificationsofloanandleaseportfolioDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableExcludingAccruedInterestBeforeAllowanceForCreditLoss_825f921b-92ea-4c67-997b-75212ebb0fc9" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FinancingReceivableExcludingAccruedInterestBeforeAllowanceForCreditLoss"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_HedgedAssetFairValueHedgePortfolioLayerMethodCumulativeIncreaseDecreaseExcludedFromAmortizedCost_eee717ba-1199-4d28-845b-00a8f3e73101" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_HedgedAssetFairValueHedgePortfolioLayerMethodCumulativeIncreaseDecreaseExcludedFromAmortizedCost"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_FinancingReceivableExcludingAccruedInterestBeforeAllowanceForCreditLoss_825f921b-92ea-4c67-997b-75212ebb0fc9" xlink:to="loc_us-gaap_HedgedAssetFairValueHedgePortfolioLayerMethodCumulativeIncreaseDecreaseExcludedFromAmortizedCost_eee717ba-1199-4d28-845b-00a8f3e73101" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableExcludingAccruedInterestBeforeAllowanceForCreditLossFeeAndLoanInProcess_c4a1c3d7-074b-4573-9fc0-6d2cd1fa7a86" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FinancingReceivableExcludingAccruedInterestBeforeAllowanceForCreditLossFeeAndLoanInProcess"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_FinancingReceivableExcludingAccruedInterestBeforeAllowanceForCreditLoss_825f921b-92ea-4c67-997b-75212ebb0fc9" xlink:to="loc_us-gaap_FinancingReceivableExcludingAccruedInterestBeforeAllowanceForCreditLossFeeAndLoanInProcess_c4a1c3d7-074b-4573-9fc0-6d2cd1fa7a86" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableExcludingAccruedInterestAfterAllowanceForCreditLoss_084228a8-daa7-448d-9304-83d25844a1a7" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FinancingReceivableExcludingAccruedInterestAfterAllowanceForCreditLoss"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableAllowanceForCreditLossExcludingAccruedInterest_2c7974fd-08c0-4c8b-ad74-3005ce732671" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FinancingReceivableAllowanceForCreditLossExcludingAccruedInterest"/>
    <link:calculationArc order="1" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_FinancingReceivableExcludingAccruedInterestAfterAllowanceForCreditLoss_084228a8-daa7-448d-9304-83d25844a1a7" xlink:to="loc_us-gaap_FinancingReceivableAllowanceForCreditLossExcludingAccruedInterest_2c7974fd-08c0-4c8b-ad74-3005ce732671" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableExcludingAccruedInterestBeforeAllowanceForCreditLoss_54bfeb87-193d-428e-936d-295fcb659776" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FinancingReceivableExcludingAccruedInterestBeforeAllowanceForCreditLoss"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_FinancingReceivableExcludingAccruedInterestAfterAllowanceForCreditLoss_084228a8-daa7-448d-9304-83d25844a1a7" xlink:to="loc_us-gaap_FinancingReceivableExcludingAccruedInterestBeforeAllowanceForCreditLoss_54bfeb87-193d-428e-936d-295fcb659776" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://ucbi.com/role/LoansandLeasesandAllowanceforCreditLossesScheduleofComponentsofnetinvestmentinleasesDetails" xlink:type="simple" xlink:href="ucbi-20241231.xsd#LoansandLeasesandAllowanceforCreditLossesScheduleofComponentsofnetinvestmentinleasesDetails"/>
  <link:calculationLink xlink:role="http://ucbi.com/role/LoansandLeasesandAllowanceforCreditLossesScheduleofComponentsofnetinvestmentinleasesDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetInvestmentInLease_875cc69c-cf28-4281-b088-8ba09d2fcccd" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_NetInvestmentInLease"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SalesTypeAndDirectFinancingLeasesLeaseReceivable_18f393b1-3068-4997-bd1d-7d20301dbd34" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_SalesTypeAndDirectFinancingLeasesLeaseReceivable"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetInvestmentInLease_875cc69c-cf28-4281-b088-8ba09d2fcccd" xlink:to="loc_us-gaap_SalesTypeAndDirectFinancingLeasesLeaseReceivable_18f393b1-3068-4997-bd1d-7d20301dbd34" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_ucbi_SalesTypeAndDirectFinancingLeasesUnguaranteedResidualAsset_624be339-2785-41ed-a6e0-a8bdfb68d0a7" xlink:href="ucbi-20241231.xsd#ucbi_SalesTypeAndDirectFinancingLeasesUnguaranteedResidualAsset"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetInvestmentInLease_875cc69c-cf28-4281-b088-8ba09d2fcccd" xlink:to="loc_ucbi_SalesTypeAndDirectFinancingLeasesUnguaranteedResidualAsset_624be339-2785-41ed-a6e0-a8bdfb68d0a7" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_ucbi_SalesTypeAndDirectFinancingLeasesInitialDirectCosts_ff170902-77b4-4e85-8612-3025963c702c" xlink:href="ucbi-20241231.xsd#ucbi_SalesTypeAndDirectFinancingLeasesInitialDirectCosts"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetInvestmentInLease_875cc69c-cf28-4281-b088-8ba09d2fcccd" xlink:to="loc_ucbi_SalesTypeAndDirectFinancingLeasesInitialDirectCosts_ff170902-77b4-4e85-8612-3025963c702c" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_ucbi_SalesTypeAndDirectFinancingLeasesSecurityDeposits_0c538d30-a53c-4f94-8f1f-75aed735fd67" xlink:href="ucbi-20241231.xsd#ucbi_SalesTypeAndDirectFinancingLeasesSecurityDeposits"/>
    <link:calculationArc order="4" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetInvestmentInLease_875cc69c-cf28-4281-b088-8ba09d2fcccd" xlink:to="loc_ucbi_SalesTypeAndDirectFinancingLeasesSecurityDeposits_0c538d30-a53c-4f94-8f1f-75aed735fd67" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_ucbi_SalesTypeAndDirectFinancingLeasesDeferredSellingProfit_dccad91f-341f-445a-a082-8f75d7bdd60e" xlink:href="ucbi-20241231.xsd#ucbi_SalesTypeAndDirectFinancingLeasesDeferredSellingProfit"/>
    <link:calculationArc order="5" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetInvestmentInLease_875cc69c-cf28-4281-b088-8ba09d2fcccd" xlink:to="loc_ucbi_SalesTypeAndDirectFinancingLeasesDeferredSellingProfit_dccad91f-341f-445a-a082-8f75d7bdd60e" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://ucbi.com/role/LoansandLeasesandAllowanceforCreditLossesScheduleofMinimumfutureleasepaymentsexpectedtobereceivedfromequipmentfinancingleasecontractsDetails" xlink:type="simple" xlink:href="ucbi-20241231.xsd#LoansandLeasesandAllowanceforCreditLossesScheduleofMinimumfutureleasepaymentsexpectedtobereceivedfromequipmentfinancingleasecontractsDetails"/>
  <link:calculationLink xlink:role="http://ucbi.com/role/LoansandLeasesandAllowanceforCreditLossesScheduleofMinimumfutureleasepaymentsexpectedtobereceivedfromequipmentfinancingleasecontractsDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SalesTypeAndDirectFinancingLeasesLeaseReceivablePaymentsToBeReceived_dd141b6d-c6dc-4a33-88e1-9d3399fff5c7" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_SalesTypeAndDirectFinancingLeasesLeaseReceivablePaymentsToBeReceived"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SalesTypeAndDirectFinancingLeasesLeaseReceivablePaymentsToBeReceivedNextTwelveMonths_1fa1ec24-5ade-4601-833b-a88fbf87b0ca" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_SalesTypeAndDirectFinancingLeasesLeaseReceivablePaymentsToBeReceivedNextTwelveMonths"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_SalesTypeAndDirectFinancingLeasesLeaseReceivablePaymentsToBeReceived_dd141b6d-c6dc-4a33-88e1-9d3399fff5c7" xlink:to="loc_us-gaap_SalesTypeAndDirectFinancingLeasesLeaseReceivablePaymentsToBeReceivedNextTwelveMonths_1fa1ec24-5ade-4601-833b-a88fbf87b0ca" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SalesTypeAndDirectFinancingLeasesLeaseReceivablePaymentsToBeReceivedTwoYears_7c593494-f7c4-480f-a964-a4f369d07978" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_SalesTypeAndDirectFinancingLeasesLeaseReceivablePaymentsToBeReceivedTwoYears"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_SalesTypeAndDirectFinancingLeasesLeaseReceivablePaymentsToBeReceived_dd141b6d-c6dc-4a33-88e1-9d3399fff5c7" xlink:to="loc_us-gaap_SalesTypeAndDirectFinancingLeasesLeaseReceivablePaymentsToBeReceivedTwoYears_7c593494-f7c4-480f-a964-a4f369d07978" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SalesTypeAndDirectFinancingLeasesLeaseReceivablePaymentsToBeReceivedThreeYears_4fa13b53-8c59-4b7f-9f15-87ba6aa905a2" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_SalesTypeAndDirectFinancingLeasesLeaseReceivablePaymentsToBeReceivedThreeYears"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_SalesTypeAndDirectFinancingLeasesLeaseReceivablePaymentsToBeReceived_dd141b6d-c6dc-4a33-88e1-9d3399fff5c7" xlink:to="loc_us-gaap_SalesTypeAndDirectFinancingLeasesLeaseReceivablePaymentsToBeReceivedThreeYears_4fa13b53-8c59-4b7f-9f15-87ba6aa905a2" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SalesTypeAndDirectFinancingLeasesLeaseReceivablePaymentsToBeReceivedFourYears_2cf342b8-f92b-48d2-bc05-c70a01e8ae16" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_SalesTypeAndDirectFinancingLeasesLeaseReceivablePaymentsToBeReceivedFourYears"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_SalesTypeAndDirectFinancingLeasesLeaseReceivablePaymentsToBeReceived_dd141b6d-c6dc-4a33-88e1-9d3399fff5c7" xlink:to="loc_us-gaap_SalesTypeAndDirectFinancingLeasesLeaseReceivablePaymentsToBeReceivedFourYears_2cf342b8-f92b-48d2-bc05-c70a01e8ae16" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SalesTypeAndDirectFinancingLeasesLeaseReceivablePaymentsToBeReceivedFiveYears_3a353879-a6cd-43ef-8dd8-a79a0dfa5c9e" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_SalesTypeAndDirectFinancingLeasesLeaseReceivablePaymentsToBeReceivedFiveYears"/>
    <link:calculationArc order="5" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_SalesTypeAndDirectFinancingLeasesLeaseReceivablePaymentsToBeReceived_dd141b6d-c6dc-4a33-88e1-9d3399fff5c7" xlink:to="loc_us-gaap_SalesTypeAndDirectFinancingLeasesLeaseReceivablePaymentsToBeReceivedFiveYears_3a353879-a6cd-43ef-8dd8-a79a0dfa5c9e" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SalesTypeAndDirectFinancingLeasesLeaseReceivablePaymentsToBeReceivedThereafter_48c95333-869c-47f6-97df-306a088fdcfd" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_SalesTypeAndDirectFinancingLeasesLeaseReceivablePaymentsToBeReceivedThereafter"/>
    <link:calculationArc order="6" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_SalesTypeAndDirectFinancingLeasesLeaseReceivablePaymentsToBeReceived_dd141b6d-c6dc-4a33-88e1-9d3399fff5c7" xlink:to="loc_us-gaap_SalesTypeAndDirectFinancingLeasesLeaseReceivablePaymentsToBeReceivedThereafter_48c95333-869c-47f6-97df-306a088fdcfd" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://ucbi.com/role/LoansandLeasesandAllowanceforCreditLossesScheduleofRiskcategoryoftermloansbyvintageyearDetails" xlink:type="simple" xlink:href="ucbi-20241231.xsd#LoansandLeasesandAllowanceforCreditLossesScheduleofRiskcategoryoftermloansbyvintageyearDetails"/>
  <link:calculationLink xlink:role="http://ucbi.com/role/LoansandLeasesandAllowanceforCreditLossesScheduleofRiskcategoryoftermloansbyvintageyearDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableExcludingAccruedInterestBeforeAllowanceForCreditLoss_adc62e77-6825-4877-b908-687eae8e72f9" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FinancingReceivableExcludingAccruedInterestBeforeAllowanceForCreditLoss"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableExcludingAccruedInterestYearOneOriginatedCurrentFiscalYear_bc3fddd6-fca4-45a6-8b9e-2baa9970333c" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FinancingReceivableExcludingAccruedInterestYearOneOriginatedCurrentFiscalYear"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_FinancingReceivableExcludingAccruedInterestBeforeAllowanceForCreditLoss_adc62e77-6825-4877-b908-687eae8e72f9" xlink:to="loc_us-gaap_FinancingReceivableExcludingAccruedInterestYearOneOriginatedCurrentFiscalYear_bc3fddd6-fca4-45a6-8b9e-2baa9970333c" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableExcludingAccruedInterestYearTwoOriginatedFiscalYearBeforeCurrentFiscalYear_18eb2ba5-941a-430e-8541-37a37877400b" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FinancingReceivableExcludingAccruedInterestYearTwoOriginatedFiscalYearBeforeCurrentFiscalYear"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_FinancingReceivableExcludingAccruedInterestBeforeAllowanceForCreditLoss_adc62e77-6825-4877-b908-687eae8e72f9" xlink:to="loc_us-gaap_FinancingReceivableExcludingAccruedInterestYearTwoOriginatedFiscalYearBeforeCurrentFiscalYear_18eb2ba5-941a-430e-8541-37a37877400b" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableExcludingAccruedInterestYearThreeOriginatedTwoYearsBeforeCurrentFiscalYear_86bf7364-0530-4f81-9860-ab42ef011522" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FinancingReceivableExcludingAccruedInterestYearThreeOriginatedTwoYearsBeforeCurrentFiscalYear"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_FinancingReceivableExcludingAccruedInterestBeforeAllowanceForCreditLoss_adc62e77-6825-4877-b908-687eae8e72f9" xlink:to="loc_us-gaap_FinancingReceivableExcludingAccruedInterestYearThreeOriginatedTwoYearsBeforeCurrentFiscalYear_86bf7364-0530-4f81-9860-ab42ef011522" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableExcludingAccruedInterestYearFourOriginatedThreeYearsBeforeCurrentFiscalYear_37808da3-6d7e-4df0-bc46-a6efe1cbfb07" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FinancingReceivableExcludingAccruedInterestYearFourOriginatedThreeYearsBeforeCurrentFiscalYear"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_FinancingReceivableExcludingAccruedInterestBeforeAllowanceForCreditLoss_adc62e77-6825-4877-b908-687eae8e72f9" xlink:to="loc_us-gaap_FinancingReceivableExcludingAccruedInterestYearFourOriginatedThreeYearsBeforeCurrentFiscalYear_37808da3-6d7e-4df0-bc46-a6efe1cbfb07" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableExcludingAccruedInterestYearFiveOriginatedFourYearsBeforeCurrentFiscalYear_1300ac4b-c684-42ce-a22c-47318b4bc1ee" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FinancingReceivableExcludingAccruedInterestYearFiveOriginatedFourYearsBeforeCurrentFiscalYear"/>
    <link:calculationArc order="5" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_FinancingReceivableExcludingAccruedInterestBeforeAllowanceForCreditLoss_adc62e77-6825-4877-b908-687eae8e72f9" xlink:to="loc_us-gaap_FinancingReceivableExcludingAccruedInterestYearFiveOriginatedFourYearsBeforeCurrentFiscalYear_1300ac4b-c684-42ce-a22c-47318b4bc1ee" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableExcludingAccruedInterestOriginatedMoreThanFiveYearsBeforeCurrentFiscalYear_a1874532-d937-4ba2-aa89-1d16a5983760" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FinancingReceivableExcludingAccruedInterestOriginatedMoreThanFiveYearsBeforeCurrentFiscalYear"/>
    <link:calculationArc order="6" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_FinancingReceivableExcludingAccruedInterestBeforeAllowanceForCreditLoss_adc62e77-6825-4877-b908-687eae8e72f9" xlink:to="loc_us-gaap_FinancingReceivableExcludingAccruedInterestOriginatedMoreThanFiveYearsBeforeCurrentFiscalYear_a1874532-d937-4ba2-aa89-1d16a5983760" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableExcludingAccruedInterestRevolving_6fc0ab61-231d-4fa6-99ef-4251a5f9b353" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FinancingReceivableExcludingAccruedInterestRevolving"/>
    <link:calculationArc order="7" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_FinancingReceivableExcludingAccruedInterestBeforeAllowanceForCreditLoss_adc62e77-6825-4877-b908-687eae8e72f9" xlink:to="loc_us-gaap_FinancingReceivableExcludingAccruedInterestRevolving_6fc0ab61-231d-4fa6-99ef-4251a5f9b353" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableExcludingAccruedInterestRevolvingConvertedToTermLoan_d5fe9c52-8752-4ec1-b836-0c33e70198ec" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FinancingReceivableExcludingAccruedInterestRevolvingConvertedToTermLoan"/>
    <link:calculationArc order="8" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_FinancingReceivableExcludingAccruedInterestBeforeAllowanceForCreditLoss_adc62e77-6825-4877-b908-687eae8e72f9" xlink:to="loc_us-gaap_FinancingReceivableExcludingAccruedInterestRevolvingConvertedToTermLoan_d5fe9c52-8752-4ec1-b836-0c33e70198ec" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableExcludingAccruedInterestAllowanceForCreditLossWriteoff_96b0cb1f-377c-41c6-aadd-ab97182ed448" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FinancingReceivableExcludingAccruedInterestAllowanceForCreditLossWriteoff"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableExcludingAccruedInterestYearThreeOriginatedTwoYearsBeforeCurrentFiscalYearWriteoff_35b5b5e5-537a-4052-ab98-b538263596f5" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FinancingReceivableExcludingAccruedInterestYearThreeOriginatedTwoYearsBeforeCurrentFiscalYearWriteoff"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_FinancingReceivableExcludingAccruedInterestAllowanceForCreditLossWriteoff_96b0cb1f-377c-41c6-aadd-ab97182ed448" xlink:to="loc_us-gaap_FinancingReceivableExcludingAccruedInterestYearThreeOriginatedTwoYearsBeforeCurrentFiscalYearWriteoff_35b5b5e5-537a-4052-ab98-b538263596f5" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableExcludingAccruedInterestYearFiveOriginatedFourYearsBeforeCurrentFiscalYearWriteoff_cf1c53f6-887b-4d0e-9215-b9ec2147d453" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FinancingReceivableExcludingAccruedInterestYearFiveOriginatedFourYearsBeforeCurrentFiscalYearWriteoff"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_FinancingReceivableExcludingAccruedInterestAllowanceForCreditLossWriteoff_96b0cb1f-377c-41c6-aadd-ab97182ed448" xlink:to="loc_us-gaap_FinancingReceivableExcludingAccruedInterestYearFiveOriginatedFourYearsBeforeCurrentFiscalYearWriteoff_cf1c53f6-887b-4d0e-9215-b9ec2147d453" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableExcludingAccruedInterestRevolvingConvertedToTermLoanWriteoff_2aadbd89-c3d7-4684-8ee3-f67c0a80ed1a" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FinancingReceivableExcludingAccruedInterestRevolvingConvertedToTermLoanWriteoff"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_FinancingReceivableExcludingAccruedInterestAllowanceForCreditLossWriteoff_96b0cb1f-377c-41c6-aadd-ab97182ed448" xlink:to="loc_us-gaap_FinancingReceivableExcludingAccruedInterestRevolvingConvertedToTermLoanWriteoff_2aadbd89-c3d7-4684-8ee3-f67c0a80ed1a" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableExcludingAccruedInterestOriginatedMoreThanFiveYearsBeforeCurrentFiscalYearWriteoff_be65a0e2-16c2-47f6-b3f7-f59061c74dd4" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FinancingReceivableExcludingAccruedInterestOriginatedMoreThanFiveYearsBeforeCurrentFiscalYearWriteoff"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_FinancingReceivableExcludingAccruedInterestAllowanceForCreditLossWriteoff_96b0cb1f-377c-41c6-aadd-ab97182ed448" xlink:to="loc_us-gaap_FinancingReceivableExcludingAccruedInterestOriginatedMoreThanFiveYearsBeforeCurrentFiscalYearWriteoff_be65a0e2-16c2-47f6-b3f7-f59061c74dd4" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableExcludingAccruedInterestRevolvingWriteoff_a13da010-7a72-44fa-a19a-c35cce634e8d" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FinancingReceivableExcludingAccruedInterestRevolvingWriteoff"/>
    <link:calculationArc order="5" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_FinancingReceivableExcludingAccruedInterestAllowanceForCreditLossWriteoff_96b0cb1f-377c-41c6-aadd-ab97182ed448" xlink:to="loc_us-gaap_FinancingReceivableExcludingAccruedInterestRevolvingWriteoff_a13da010-7a72-44fa-a19a-c35cce634e8d" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableExcludingAccruedInterestYearOneOriginatedCurrentFiscalYearWriteoff_5517e743-38ba-4f84-b0b0-12937a9a89bd" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FinancingReceivableExcludingAccruedInterestYearOneOriginatedCurrentFiscalYearWriteoff"/>
    <link:calculationArc order="6" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_FinancingReceivableExcludingAccruedInterestAllowanceForCreditLossWriteoff_96b0cb1f-377c-41c6-aadd-ab97182ed448" xlink:to="loc_us-gaap_FinancingReceivableExcludingAccruedInterestYearOneOriginatedCurrentFiscalYearWriteoff_5517e743-38ba-4f84-b0b0-12937a9a89bd" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableExcludingAccruedInterestYearTwoOriginatedFiscalYearBeforeCurrentFiscalYearWriteoff_6f03834a-8bad-47ef-9a69-327603ae2e31" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FinancingReceivableExcludingAccruedInterestYearTwoOriginatedFiscalYearBeforeCurrentFiscalYearWriteoff"/>
    <link:calculationArc order="7" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_FinancingReceivableExcludingAccruedInterestAllowanceForCreditLossWriteoff_96b0cb1f-377c-41c6-aadd-ab97182ed448" xlink:to="loc_us-gaap_FinancingReceivableExcludingAccruedInterestYearTwoOriginatedFiscalYearBeforeCurrentFiscalYearWriteoff_6f03834a-8bad-47ef-9a69-327603ae2e31" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableExcludingAccruedInterestYearFourOriginatedThreeYearsBeforeCurrentFiscalYearWriteoff_b517f962-4dc9-44db-8dba-fc3ada0e2ea4" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FinancingReceivableExcludingAccruedInterestYearFourOriginatedThreeYearsBeforeCurrentFiscalYearWriteoff"/>
    <link:calculationArc order="8" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_FinancingReceivableExcludingAccruedInterestAllowanceForCreditLossWriteoff_96b0cb1f-377c-41c6-aadd-ab97182ed448" xlink:to="loc_us-gaap_FinancingReceivableExcludingAccruedInterestYearFourOriginatedThreeYearsBeforeCurrentFiscalYearWriteoff_b517f962-4dc9-44db-8dba-fc3ada0e2ea4" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://ucbi.com/role/LoansandLeasesandAllowanceforCreditLossesScheduleofBalanceandactivityintheACLbyportfoliosegmentDetails" xlink:type="simple" xlink:href="ucbi-20241231.xsd#LoansandLeasesandAllowanceforCreditLossesScheduleofBalanceandactivityintheACLbyportfoliosegmentDetails"/>
  <link:calculationLink xlink:role="http://ucbi.com/role/LoansandLeasesandAllowanceforCreditLossesScheduleofBalanceandactivityintheACLbyportfoliosegmentDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProvisionForLoanLeaseAndOtherLosses_fc3ddcca-c23e-4c1e-91be-bea5c45dfa14" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ProvisionForLoanLeaseAndOtherLosses"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableExcludingAccruedInterestCreditLossExpenseReversal_fd0a67f1-c415-409d-9f5d-94e9165a1e61" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FinancingReceivableExcludingAccruedInterestCreditLossExpenseReversal"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_ProvisionForLoanLeaseAndOtherLosses_fc3ddcca-c23e-4c1e-91be-bea5c45dfa14" xlink:to="loc_us-gaap_FinancingReceivableExcludingAccruedInterestCreditLossExpenseReversal_fd0a67f1-c415-409d-9f5d-94e9165a1e61" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OffBalanceSheetCreditLossLiabilityCreditLossExpenseReversal_cf3b1a5f-1929-4aec-ab1b-69d75b1980a9" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_OffBalanceSheetCreditLossLiabilityCreditLossExpenseReversal"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_ProvisionForLoanLeaseAndOtherLosses_fc3ddcca-c23e-4c1e-91be-bea5c45dfa14" xlink:to="loc_us-gaap_OffBalanceSheetCreditLossLiabilityCreditLossExpenseReversal_cf3b1a5f-1929-4aec-ab1b-69d75b1980a9" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://ucbi.com/role/PremisesandEquipmentScheduleofPremisesandEquipmentDetails" xlink:type="simple" xlink:href="ucbi-20241231.xsd#PremisesandEquipmentScheduleofPremisesandEquipmentDetails"/>
  <link:calculationLink xlink:role="http://ucbi.com/role/PremisesandEquipmentScheduleofPremisesandEquipmentDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentNet_efbcfaa8-1b3c-4d3f-a304-472e21888e59" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_PropertyPlantAndEquipmentNet"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentGross_7ad7250c-279e-44ca-b2d6-596a889aec74" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_PropertyPlantAndEquipmentGross"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentNet_efbcfaa8-1b3c-4d3f-a304-472e21888e59" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentGross_7ad7250c-279e-44ca-b2d6-596a889aec74" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment_837440ff-ebed-4ea7-a54e-622ff05eeaaa" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment"/>
    <link:calculationArc order="2" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentNet_efbcfaa8-1b3c-4d3f-a304-472e21888e59" xlink:to="loc_us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment_837440ff-ebed-4ea7-a54e-622ff05eeaaa" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://ucbi.com/role/DerivativesandHedgingActivitiesScheduleofFairvalueofderivativefinancialinstrumentsDetails" xlink:type="simple" xlink:href="ucbi-20241231.xsd#DerivativesandHedgingActivitiesScheduleofFairvalueofderivativefinancialinstrumentsDetails"/>
  <link:calculationLink xlink:role="http://ucbi.com/role/DerivativesandHedgingActivitiesScheduleofFairvalueofderivativefinancialinstrumentsDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeLiabilityFairValueOffsetAgainstCollateralNetOfNotSubjectToMasterNettingArrangementPolicyElection_4ab44081-cc3f-437d-b31a-e50fa33ad708" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DerivativeLiabilityFairValueOffsetAgainstCollateralNetOfNotSubjectToMasterNettingArrangementPolicyElection"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeFairValueOfDerivativeLiability_29ccd160-cd0c-48a1-a3a3-61a244d6cf65" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DerivativeFairValueOfDerivativeLiability"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DerivativeLiabilityFairValueOffsetAgainstCollateralNetOfNotSubjectToMasterNettingArrangementPolicyElection_4ab44081-cc3f-437d-b31a-e50fa33ad708" xlink:to="loc_us-gaap_DerivativeFairValueOfDerivativeLiability_29ccd160-cd0c-48a1-a3a3-61a244d6cf65" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeLiabilityNotOffsetPolicyElectionDeduction_b0405efc-0aef-45fe-8da7-6a017cef295d" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DerivativeLiabilityNotOffsetPolicyElectionDeduction"/>
    <link:calculationArc order="2" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DerivativeLiabilityFairValueOffsetAgainstCollateralNetOfNotSubjectToMasterNettingArrangementPolicyElection_4ab44081-cc3f-437d-b31a-e50fa33ad708" xlink:to="loc_us-gaap_DerivativeLiabilityNotOffsetPolicyElectionDeduction_b0405efc-0aef-45fe-8da7-6a017cef295d" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeLiabilityFairValueOfCollateral_23680cb0-2a2f-442b-8a4f-940d20d24f24" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DerivativeLiabilityFairValueOfCollateral"/>
    <link:calculationArc order="3" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DerivativeLiabilityFairValueOffsetAgainstCollateralNetOfNotSubjectToMasterNettingArrangementPolicyElection_4ab44081-cc3f-437d-b31a-e50fa33ad708" xlink:to="loc_us-gaap_DerivativeLiabilityFairValueOfCollateral_23680cb0-2a2f-442b-8a4f-940d20d24f24" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeAssetFairValueOffsetAgainstCollateralNetOfNotSubjectToMasterNettingArrangementPolicyElection_fba062cf-166b-4d11-ae3c-02880f74bb70" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DerivativeAssetFairValueOffsetAgainstCollateralNetOfNotSubjectToMasterNettingArrangementPolicyElection"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeFairValueOfDerivativeAsset_81025e92-8510-40c7-8bda-c551ce13677d" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DerivativeFairValueOfDerivativeAsset"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DerivativeAssetFairValueOffsetAgainstCollateralNetOfNotSubjectToMasterNettingArrangementPolicyElection_fba062cf-166b-4d11-ae3c-02880f74bb70" xlink:to="loc_us-gaap_DerivativeFairValueOfDerivativeAsset_81025e92-8510-40c7-8bda-c551ce13677d" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeAssetNotOffsetPolicyElectionDeduction_2dad1520-9571-4777-8fcc-a8c774185679" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DerivativeAssetNotOffsetPolicyElectionDeduction"/>
    <link:calculationArc order="2" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DerivativeAssetFairValueOffsetAgainstCollateralNetOfNotSubjectToMasterNettingArrangementPolicyElection_fba062cf-166b-4d11-ae3c-02880f74bb70" xlink:to="loc_us-gaap_DerivativeAssetNotOffsetPolicyElectionDeduction_2dad1520-9571-4777-8fcc-a8c774185679" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeAssetFairValueOfCollateral_6ce9c839-440f-4496-8519-82c0c8a5f9d1" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DerivativeAssetFairValueOfCollateral"/>
    <link:calculationArc order="3" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DerivativeAssetFairValueOffsetAgainstCollateralNetOfNotSubjectToMasterNettingArrangementPolicyElection_fba062cf-166b-4d11-ae3c-02880f74bb70" xlink:to="loc_us-gaap_DerivativeAssetFairValueOfCollateral_6ce9c839-440f-4496-8519-82c0c8a5f9d1" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://ucbi.com/role/GoodwillandOtherIntangibleAssetsScheduleofCarryingAmountofGoodwillandOtherIntangibleAssetsDetails" xlink:type="simple" xlink:href="ucbi-20241231.xsd#GoodwillandOtherIntangibleAssetsScheduleofCarryingAmountofGoodwillandOtherIntangibleAssetsDetails"/>
  <link:calculationLink xlink:role="http://ucbi.com/role/GoodwillandOtherIntangibleAssetsScheduleofCarryingAmountofGoodwillandOtherIntangibleAssetsDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsNet_0a894cdd-919b-4489-9bb0-d334a89dc40a" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FiniteLivedIntangibleAssetsNet"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsGross_3fd33724-0f4b-4697-9763-543e2a651ff2" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FiniteLivedIntangibleAssetsGross"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsNet_0a894cdd-919b-4489-9bb0-d334a89dc40a" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsGross_3fd33724-0f4b-4697-9763-543e2a651ff2" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization_1874cc1c-b6dc-45dc-8b6c-8b76ec6cf250" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization"/>
    <link:calculationArc order="2" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsNet_0a894cdd-919b-4489-9bb0-d334a89dc40a" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization_1874cc1c-b6dc-45dc-8b6c-8b76ec6cf250" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IntangibleAssetsNetIncludingGoodwill_0096f297-e2b5-4722-8de4-84667e1d7144" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_IntangibleAssetsNetIncludingGoodwill"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsNet_cd804965-0ae2-4ef3-9081-c13e9dced072" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FiniteLivedIntangibleAssetsNet"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_IntangibleAssetsNetIncludingGoodwill_0096f297-e2b5-4722-8de4-84667e1d7144" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsNet_cd804965-0ae2-4ef3-9081-c13e9dced072" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Goodwill_97022fbd-6c50-43ec-af4e-26ebac2cbee7" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_Goodwill"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_IntangibleAssetsNetIncludingGoodwill_0096f297-e2b5-4722-8de4-84667e1d7144" xlink:to="loc_us-gaap_Goodwill_97022fbd-6c50-43ec-af4e-26ebac2cbee7" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://ucbi.com/role/GoodwillandOtherIntangibleAssetsScheduleofEstimatedAggregateAmortizationExpenseForFuturePeriodsDetails" xlink:type="simple" xlink:href="ucbi-20241231.xsd#GoodwillandOtherIntangibleAssetsScheduleofEstimatedAggregateAmortizationExpenseForFuturePeriodsDetails"/>
  <link:calculationLink xlink:role="http://ucbi.com/role/GoodwillandOtherIntangibleAssetsScheduleofEstimatedAggregateAmortizationExpenseForFuturePeriodsDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsNet_ee92e333-67f9-49af-a483-212952d99b09" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FiniteLivedIntangibleAssetsNet"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths_75d808da-f45c-4dc4-be63-f7b2f8461d56" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsNet_ee92e333-67f9-49af-a483-212952d99b09" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths_75d808da-f45c-4dc4-be63-f7b2f8461d56" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo_6a80878e-eb26-4944-b194-0c59affb206e" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsNet_ee92e333-67f9-49af-a483-212952d99b09" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo_6a80878e-eb26-4944-b194-0c59affb206e" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree_cfc12987-c80b-4425-af1f-860608c5dff4" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsNet_ee92e333-67f9-49af-a483-212952d99b09" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree_cfc12987-c80b-4425-af1f-860608c5dff4" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFour_58b0d48f-b533-49b4-851f-f98507ffb54a" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFour"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsNet_ee92e333-67f9-49af-a483-212952d99b09" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFour_58b0d48f-b533-49b4-851f-f98507ffb54a" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFive_6430f01e-c2d5-4090-8241-d4d73aa11e32" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFive"/>
    <link:calculationArc order="5" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsNet_ee92e333-67f9-49af-a483-212952d99b09" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFive_6430f01e-c2d5-4090-8241-d4d73aa11e32" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive_99ef4129-afd2-4619-ad1b-ed1f34d13f74" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive"/>
    <link:calculationArc order="6" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsNet_ee92e333-67f9-49af-a483-212952d99b09" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive_99ef4129-afd2-4619-ad1b-ed1f34d13f74" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://ucbi.com/role/TimeDepositsScheduleofContractualMaturitiesofTimeDepositsIncludingBrokeredTimeDepositsDetails" xlink:type="simple" xlink:href="ucbi-20241231.xsd#TimeDepositsScheduleofContractualMaturitiesofTimeDepositsIncludingBrokeredTimeDepositsDetails"/>
  <link:calculationLink xlink:role="http://ucbi.com/role/TimeDepositsScheduleofContractualMaturitiesofTimeDepositsIncludingBrokeredTimeDepositsDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TimeDeposits_3363b7ef-5b4d-474b-a9f2-c29ee4143e4f" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_TimeDeposits"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TimeDepositMaturitiesYearOne_fb9fc11c-3d8f-4453-8f59-a2b04bc5c2c9" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_TimeDepositMaturitiesYearOne"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_TimeDeposits_3363b7ef-5b4d-474b-a9f2-c29ee4143e4f" xlink:to="loc_us-gaap_TimeDepositMaturitiesYearOne_fb9fc11c-3d8f-4453-8f59-a2b04bc5c2c9" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TimeDepositMaturitiesYearTwo_30cd67a4-5358-43aa-a186-f6c4cb9dd898" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_TimeDepositMaturitiesYearTwo"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_TimeDeposits_3363b7ef-5b4d-474b-a9f2-c29ee4143e4f" xlink:to="loc_us-gaap_TimeDepositMaturitiesYearTwo_30cd67a4-5358-43aa-a186-f6c4cb9dd898" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TimeDepositMaturitiesYearThree_c7bf9d9c-a4a1-4459-8453-dfa57b67511a" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_TimeDepositMaturitiesYearThree"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_TimeDeposits_3363b7ef-5b4d-474b-a9f2-c29ee4143e4f" xlink:to="loc_us-gaap_TimeDepositMaturitiesYearThree_c7bf9d9c-a4a1-4459-8453-dfa57b67511a" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TimeDepositMaturitiesYearFour_fcd09539-0f97-4178-844a-e5a253fd63e3" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_TimeDepositMaturitiesYearFour"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_TimeDeposits_3363b7ef-5b4d-474b-a9f2-c29ee4143e4f" xlink:to="loc_us-gaap_TimeDepositMaturitiesYearFour_fcd09539-0f97-4178-844a-e5a253fd63e3" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TimeDepositMaturitiesYearFive_3724fa77-f3db-4ba0-aeb0-d87e399bdc0f" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_TimeDepositMaturitiesYearFive"/>
    <link:calculationArc order="5" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_TimeDeposits_3363b7ef-5b4d-474b-a9f2-c29ee4143e4f" xlink:to="loc_us-gaap_TimeDepositMaturitiesYearFive_3724fa77-f3db-4ba0-aeb0-d87e399bdc0f" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TimeDepositMaturitiesAfterYearFive_2531282a-a51d-4e15-b9db-7f94e3951a86" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_TimeDepositMaturitiesAfterYearFive"/>
    <link:calculationArc order="6" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_TimeDeposits_3363b7ef-5b4d-474b-a9f2-c29ee4143e4f" xlink:to="loc_us-gaap_TimeDepositMaturitiesAfterYearFive_2531282a-a51d-4e15-b9db-7f94e3951a86" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://ucbi.com/role/LongtermDebtandShorttermBorrowingsScheduleofLongtermDebtDetails" xlink:type="simple" xlink:href="ucbi-20241231.xsd#LongtermDebtandShorttermBorrowingsScheduleofLongtermDebtDetails"/>
  <link:calculationLink xlink:role="http://ucbi.com/role/LongtermDebtandShorttermBorrowingsScheduleofLongtermDebtDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebt_5c1dc3ea-c808-4eb0-b092-f747da4cb723" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_LongTermDebt"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentUnamortizedDiscount_0bdd4400-9dc9-4987-8d2d-beb2afd0b762" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DebtInstrumentUnamortizedDiscount"/>
    <link:calculationArc order="1" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LongTermDebt_5c1dc3ea-c808-4eb0-b092-f747da4cb723" xlink:to="loc_us-gaap_DebtInstrumentUnamortizedDiscount_0bdd4400-9dc9-4987-8d2d-beb2afd0b762" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentCarryingAmount_d7cff7c3-cb85-41d7-9b26-999f98fca6ec" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DebtInstrumentCarryingAmount"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LongTermDebt_5c1dc3ea-c808-4eb0-b092-f747da4cb723" xlink:to="loc_us-gaap_DebtInstrumentCarryingAmount_d7cff7c3-cb85-41d7-9b26-999f98fca6ec" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://ucbi.com/role/OperatingLeasesScheduleofOperatingLeaseIncomeandExpenseandOtherSupplementalInformationDetails" xlink:type="simple" xlink:href="ucbi-20241231.xsd#OperatingLeasesScheduleofOperatingLeaseIncomeandExpenseandOtherSupplementalInformationDetails"/>
  <link:calculationLink xlink:role="http://ucbi.com/role/OperatingLeasesScheduleofOperatingLeaseIncomeandExpenseandOtherSupplementalInformationDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LeaseCost_e72886e8-ef51-4bd9-9bb2-c293a599a209" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_LeaseCost"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeaseCost_99b27c12-fd19-4ec0-9094-d4ec2fb885c4" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_OperatingLeaseCost"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LeaseCost_e72886e8-ef51-4bd9-9bb2-c293a599a209" xlink:to="loc_us-gaap_OperatingLeaseCost_99b27c12-fd19-4ec0-9094-d4ec2fb885c4" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_VariableLeaseCost_eee1896d-9ed8-4b3d-82e1-b4ecb676fc4b" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_VariableLeaseCost"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LeaseCost_e72886e8-ef51-4bd9-9bb2-c293a599a209" xlink:to="loc_us-gaap_VariableLeaseCost_eee1896d-9ed8-4b3d-82e1-b4ecb676fc4b" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShortTermLeaseCost_03ef67cd-286c-416e-8b65-f8520f037c7c" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ShortTermLeaseCost"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LeaseCost_e72886e8-ef51-4bd9-9bb2-c293a599a209" xlink:to="loc_us-gaap_ShortTermLeaseCost_03ef67cd-286c-416e-8b65-f8520f037c7c" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://ucbi.com/role/OperatingLeasesScheduleofFutureMinimumLeasePaymentsUnderOperatingLeasesDetails" xlink:type="simple" xlink:href="ucbi-20241231.xsd#OperatingLeasesScheduleofFutureMinimumLeasePaymentsUnderOperatingLeasesDetails"/>
  <link:calculationLink xlink:role="http://ucbi.com/role/OperatingLeasesScheduleofFutureMinimumLeasePaymentsUnderOperatingLeasesDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue_52f18125-24e7-4a53-8815-4b4c1288bd6f" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LesseeOperatingLeaseLiabilityUndiscountedExcessAmount_48de7c0f-b700-4a43-a2c0-44514b1a2423" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_LesseeOperatingLeaseLiabilityUndiscountedExcessAmount"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue_52f18125-24e7-4a53-8815-4b4c1288bd6f" xlink:to="loc_us-gaap_LesseeOperatingLeaseLiabilityUndiscountedExcessAmount_48de7c0f-b700-4a43-a2c0-44514b1a2423" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeaseLiability_da60892c-f72f-4728-851b-73f2dbb471ea" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_OperatingLeaseLiability"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue_52f18125-24e7-4a53-8815-4b4c1288bd6f" xlink:to="loc_us-gaap_OperatingLeaseLiability_da60892c-f72f-4728-851b-73f2dbb471ea" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://ucbi.com/role/OperatingLeasesScheduleofFutureMinimumLeasePaymentsUnderOperatingLeasesDetails_1" xlink:type="simple" xlink:href="ucbi-20241231.xsd#OperatingLeasesScheduleofFutureMinimumLeasePaymentsUnderOperatingLeasesDetails_1"/>
  <link:calculationLink xlink:role="http://ucbi.com/role/OperatingLeasesScheduleofFutureMinimumLeasePaymentsUnderOperatingLeasesDetails_1" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue_aebda253-d063-484f-a090-f0a72c6b8a88" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths_bb9240a0-c911-4e4d-8782-5b837e960806" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue_aebda253-d063-484f-a090-f0a72c6b8a88" xlink:to="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths_bb9240a0-c911-4e4d-8782-5b837e960806" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearTwo_613c5be7-8c75-406f-8f32-9c2e0c25cfba" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearTwo"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue_aebda253-d063-484f-a090-f0a72c6b8a88" xlink:to="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearTwo_613c5be7-8c75-406f-8f32-9c2e0c25cfba" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearThree_71ba1955-5bfd-4418-9ee3-494e76405fdb" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearThree"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue_aebda253-d063-484f-a090-f0a72c6b8a88" xlink:to="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearThree_71ba1955-5bfd-4418-9ee3-494e76405fdb" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFour_d20334f3-7789-4ad3-a7d3-2f2810e30e81" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFour"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue_aebda253-d063-484f-a090-f0a72c6b8a88" xlink:to="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFour_d20334f3-7789-4ad3-a7d3-2f2810e30e81" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFive_e429fbd3-d68a-42d1-a5a7-3669f6e7b0a9" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFive"/>
    <link:calculationArc order="5" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue_aebda253-d063-484f-a090-f0a72c6b8a88" xlink:to="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFive_e429fbd3-d68a-42d1-a5a7-3669f6e7b0a9" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive_71413604-a196-435b-bec6-5a4ced518be0" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive"/>
    <link:calculationArc order="6" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue_aebda253-d063-484f-a090-f0a72c6b8a88" xlink:to="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive_71413604-a196-435b-bec6-5a4ced518be0" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://ucbi.com/role/FairValueMeasurementsScheduleofAssetsandliabilitiesmeasuredatfairvalueonrecurringbasisDetails" xlink:type="simple" xlink:href="ucbi-20241231.xsd#FairValueMeasurementsScheduleofAssetsandliabilitiesmeasuredatfairvalueonrecurringbasisDetails"/>
  <link:calculationLink xlink:role="http://ucbi.com/role/FairValueMeasurementsScheduleofAssetsandliabilitiesmeasuredatfairvalueonrecurringbasisDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilitiesFairValueDisclosure_aba3dfc2-4108-49d6-82b8-f3b658f44c62" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_LiabilitiesFairValueDisclosure"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredCompensationLiabilityCurrentAndNoncurrent_bfe30e4f-32df-4c95-b459-f158f1df6275" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DeferredCompensationLiabilityCurrentAndNoncurrent"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesFairValueDisclosure_aba3dfc2-4108-49d6-82b8-f3b658f44c62" xlink:to="loc_us-gaap_DeferredCompensationLiabilityCurrentAndNoncurrent_bfe30e4f-32df-4c95-b459-f158f1df6275" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeLiabilities_e7faabcc-1a65-4437-9b56-076e14af90df" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DerivativeLiabilities"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesFairValueDisclosure_aba3dfc2-4108-49d6-82b8-f3b658f44c62" xlink:to="loc_us-gaap_DerivativeLiabilities_e7faabcc-1a65-4437-9b56-076e14af90df" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetsFairValueDisclosure_c01eadff-e126-4e92-b20d-421ebfaa0796" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_AssetsFairValueDisclosure"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_MortgagesHeldForSaleFairValueDisclosure_c3d159f1-a4cc-4df6-b1c7-d691a2d7d47e" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_MortgagesHeldForSaleFairValueDisclosure"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_AssetsFairValueDisclosure_c01eadff-e126-4e92-b20d-421ebfaa0796" xlink:to="loc_us-gaap_MortgagesHeldForSaleFairValueDisclosure_c3d159f1-a4cc-4df6-b1c7-d691a2d7d47e" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquitySecuritiesFvNi_13a037db-66e0-4532-8960-5043acea62d6" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_EquitySecuritiesFvNi"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_AssetsFairValueDisclosure_c01eadff-e126-4e92-b20d-421ebfaa0796" xlink:to="loc_us-gaap_EquitySecuritiesFvNi_13a037db-66e0-4532-8960-5043acea62d6" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtSecuritiesAvailableForSaleExcludingAccruedInterest_6efc1b6c-3619-4982-995e-c3fdbf3adda5" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DebtSecuritiesAvailableForSaleExcludingAccruedInterest"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_AssetsFairValueDisclosure_c01eadff-e126-4e92-b20d-421ebfaa0796" xlink:to="loc_us-gaap_DebtSecuritiesAvailableForSaleExcludingAccruedInterest_6efc1b6c-3619-4982-995e-c3fdbf3adda5" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_ucbi_MutualFundsFairValueDisclosure_f43238ed-3661-4f37-b596-9a8c9ba24ff0" xlink:href="ucbi-20241231.xsd#ucbi_MutualFundsFairValueDisclosure"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_AssetsFairValueDisclosure_c01eadff-e126-4e92-b20d-421ebfaa0796" xlink:to="loc_ucbi_MutualFundsFairValueDisclosure_f43238ed-3661-4f37-b596-9a8c9ba24ff0" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_ucbi_ContingentConsiderationReceivable_2e729d9f-770a-4739-8d6a-4cbe93a714d3" xlink:href="ucbi-20241231.xsd#ucbi_ContingentConsiderationReceivable"/>
    <link:calculationArc order="5" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_AssetsFairValueDisclosure_c01eadff-e126-4e92-b20d-421ebfaa0796" xlink:to="loc_ucbi_ContingentConsiderationReceivable_2e729d9f-770a-4739-8d6a-4cbe93a714d3" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeAssets_b5cb59eb-b7fb-48a3-bd3a-f756a321d0db" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DerivativeAssets"/>
    <link:calculationArc order="6" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_AssetsFairValueDisclosure_c01eadff-e126-4e92-b20d-421ebfaa0796" xlink:to="loc_us-gaap_DerivativeAssets_b5cb59eb-b7fb-48a3-bd3a-f756a321d0db" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ServicingAssetAtFairValueAmount_5bf03a2b-4c26-4128-806c-cf9e519568fd" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ServicingAssetAtFairValueAmount"/>
    <link:calculationArc order="7" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_AssetsFairValueDisclosure_c01eadff-e126-4e92-b20d-421ebfaa0796" xlink:to="loc_us-gaap_ServicingAssetAtFairValueAmount_5bf03a2b-4c26-4128-806c-cf9e519568fd" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://ucbi.com/role/EarningsPerShareScheduleofComputationofBasicandDilutedNetIncomePerCommonShareDetails" xlink:type="simple" xlink:href="ucbi-20241231.xsd#EarningsPerShareScheduleofComputationofBasicandDilutedNetIncomePerCommonShareDetails"/>
  <link:calculationLink xlink:role="http://ucbi.com/role/EarningsPerShareScheduleofComputationofBasicandDilutedNetIncomePerCommonShareDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding_dacd53d7-fe21-421d-9832-698b1d7c663a" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_WeightedAverageNumberOfSharesOutstandingBasic_8eb39ebc-6f76-4536-9672-0b8e2038501c" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_WeightedAverageNumberOfSharesOutstandingBasic"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding_dacd53d7-fe21-421d-9832-698b1d7c663a" xlink:to="loc_us-gaap_WeightedAverageNumberOfSharesOutstandingBasic_8eb39ebc-6f76-4536-9672-0b8e2038501c" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncrementalCommonSharesAttributableToShareBasedPaymentArrangements_d66b3f40-9dec-4697-a732-e85773dffe5a" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_IncrementalCommonSharesAttributableToShareBasedPaymentArrangements"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding_dacd53d7-fe21-421d-9832-698b1d7c663a" xlink:to="loc_us-gaap_IncrementalCommonSharesAttributableToShareBasedPaymentArrangements_d66b3f40-9dec-4697-a732-e85773dffe5a" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetIncomeLossAvailableToCommonStockholdersDiluted_7e598f01-2c13-494e-a876-b04986fbdfac" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_NetIncomeLossAvailableToCommonStockholdersDiluted"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetIncomeLoss_777541e9-ef8f-428a-a69a-116ddffa4649" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_NetIncomeLoss"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetIncomeLossAvailableToCommonStockholdersDiluted_7e598f01-2c13-494e-a876-b04986fbdfac" xlink:to="loc_us-gaap_NetIncomeLoss_777541e9-ef8f-428a-a69a-116ddffa4649" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_UndistributedEarningsLossAllocatedToParticipatingSecuritiesBasic_41d49eb4-7dae-4842-839b-ce27c2fce581" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_UndistributedEarningsLossAllocatedToParticipatingSecuritiesBasic"/>
    <link:calculationArc order="2" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetIncomeLossAvailableToCommonStockholdersDiluted_7e598f01-2c13-494e-a876-b04986fbdfac" xlink:to="loc_us-gaap_UndistributedEarningsLossAllocatedToParticipatingSecuritiesBasic_41d49eb4-7dae-4842-839b-ce27c2fce581" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PreferredStockDividendsIncomeStatementImpact_3206b91c-c9d8-44b1-9184-6e5baa903e20" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_PreferredStockDividendsIncomeStatementImpact"/>
    <link:calculationArc order="3" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetIncomeLossAvailableToCommonStockholdersDiluted_7e598f01-2c13-494e-a876-b04986fbdfac" xlink:to="loc_us-gaap_PreferredStockDividendsIncomeStatementImpact_3206b91c-c9d8-44b1-9184-6e5baa903e20" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_ucbi_DiscountOnPreferredSharesRepurchased_097cacd5-ad94-43e6-82f3-7b217329cbdc" xlink:href="ucbi-20241231.xsd#ucbi_DiscountOnPreferredSharesRepurchased"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetIncomeLossAvailableToCommonStockholdersDiluted_7e598f01-2c13-494e-a876-b04986fbdfac" xlink:to="loc_ucbi_DiscountOnPreferredSharesRepurchased_097cacd5-ad94-43e6-82f3-7b217329cbdc" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic_46e27253-bd3c-4bd3-873a-3f37d41abf3d" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetIncomeLoss_8ee0670f-0e25-433a-88fd-aecacd3144d5" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_NetIncomeLoss"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic_46e27253-bd3c-4bd3-873a-3f37d41abf3d" xlink:to="loc_us-gaap_NetIncomeLoss_8ee0670f-0e25-433a-88fd-aecacd3144d5" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_UndistributedEarningsLossAllocatedToParticipatingSecuritiesBasic_21433ad7-a28a-481d-a7c7-c589e2aca083" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_UndistributedEarningsLossAllocatedToParticipatingSecuritiesBasic"/>
    <link:calculationArc order="2" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic_46e27253-bd3c-4bd3-873a-3f37d41abf3d" xlink:to="loc_us-gaap_UndistributedEarningsLossAllocatedToParticipatingSecuritiesBasic_21433ad7-a28a-481d-a7c7-c589e2aca083" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PreferredStockDividendsIncomeStatementImpact_b5804dd0-73e8-4ffd-b99e-8be4803fcb23" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_PreferredStockDividendsIncomeStatementImpact"/>
    <link:calculationArc order="3" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic_46e27253-bd3c-4bd3-873a-3f37d41abf3d" xlink:to="loc_us-gaap_PreferredStockDividendsIncomeStatementImpact_b5804dd0-73e8-4ffd-b99e-8be4803fcb23" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_ucbi_DiscountOnPreferredSharesRepurchased_b287bef4-3fec-4f7f-b0ba-d8308f90baf5" xlink:href="ucbi-20241231.xsd#ucbi_DiscountOnPreferredSharesRepurchased"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic_46e27253-bd3c-4bd3-873a-3f37d41abf3d" xlink:to="loc_ucbi_DiscountOnPreferredSharesRepurchased_b287bef4-3fec-4f7f-b0ba-d8308f90baf5" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://ucbi.com/role/IncomeTaxesScheduleofincometaxexpenseDetails" xlink:type="simple" xlink:href="ucbi-20241231.xsd#IncomeTaxesScheduleofincometaxexpenseDetails"/>
  <link:calculationLink xlink:role="http://ucbi.com/role/IncomeTaxesScheduleofincometaxexpenseDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxExpenseBenefit_b258ab4f-1dcf-4133-86c6-f6fa06f3fc3e" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_IncomeTaxExpenseBenefit"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CurrentIncomeTaxExpenseBenefit_2d1e71b3-e96e-4450-b149-4d71f5f454ae" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_CurrentIncomeTaxExpenseBenefit"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_IncomeTaxExpenseBenefit_b258ab4f-1dcf-4133-86c6-f6fa06f3fc3e" xlink:to="loc_us-gaap_CurrentIncomeTaxExpenseBenefit_2d1e71b3-e96e-4450-b149-4d71f5f454ae" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredOtherTaxExpenseBenefit_7892f8f0-abe6-448b-8159-040afbde757d" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DeferredOtherTaxExpenseBenefit"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_IncomeTaxExpenseBenefit_b258ab4f-1dcf-4133-86c6-f6fa06f3fc3e" xlink:to="loc_us-gaap_DeferredOtherTaxExpenseBenefit_7892f8f0-abe6-448b-8159-040afbde757d" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://ucbi.com/role/IncomeTaxesScheduleofdifferencesbetweenprovisionforincometaxesandamountcomputedasstatutoryrateDetails" xlink:type="simple" xlink:href="ucbi-20241231.xsd#IncomeTaxesScheduleofdifferencesbetweenprovisionforincometaxesandamountcomputedasstatutoryrateDetails"/>
  <link:calculationLink xlink:role="http://ucbi.com/role/IncomeTaxesScheduleofdifferencesbetweenprovisionforincometaxesandamountcomputedasstatutoryrateDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxExpenseBenefit_7f3bcf18-5ad3-4ce1-a368-323fd0aa630c" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_IncomeTaxExpenseBenefit"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate_42b892ba-bc66-4437-b07c-829770c16a63" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_IncomeTaxExpenseBenefit_7f3bcf18-5ad3-4ce1-a368-323fd0aa630c" xlink:to="loc_us-gaap_IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate_42b892ba-bc66-4437-b07c-829770c16a63" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxReconciliationStateAndLocalIncomeTaxes_2ab99a12-d72a-4919-b139-8ceda20f32e2" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_IncomeTaxReconciliationStateAndLocalIncomeTaxes"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_IncomeTaxExpenseBenefit_7f3bcf18-5ad3-4ce1-a368-323fd0aa630c" xlink:to="loc_us-gaap_IncomeTaxReconciliationStateAndLocalIncomeTaxes_2ab99a12-d72a-4919-b139-8ceda20f32e2" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_ucbi_IncomeTaxReconciliationBankOwnedLifeInsuranceEarnings_95cd1b8c-ea09-4404-a5b7-87ec7be4d66d" xlink:href="ucbi-20241231.xsd#ucbi_IncomeTaxReconciliationBankOwnedLifeInsuranceEarnings"/>
    <link:calculationArc order="3" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_IncomeTaxExpenseBenefit_7f3bcf18-5ad3-4ce1-a368-323fd0aa630c" xlink:to="loc_ucbi_IncomeTaxReconciliationBankOwnedLifeInsuranceEarnings_95cd1b8c-ea09-4404-a5b7-87ec7be4d66d" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_ucbi_IncomeTaxReconciliationChangeInReservesForUncertainTaxPositions_5548662c-ec4b-4340-a208-77a482fe81a4" xlink:href="ucbi-20241231.xsd#ucbi_IncomeTaxReconciliationChangeInReservesForUncertainTaxPositions"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_IncomeTaxExpenseBenefit_7f3bcf18-5ad3-4ce1-a368-323fd0aa630c" xlink:to="loc_ucbi_IncomeTaxReconciliationChangeInReservesForUncertainTaxPositions_5548662c-ec4b-4340-a208-77a482fe81a4" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxReconciliationTaxExemptIncome_e17f0173-0acb-4750-8db7-a355075bbd99" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_IncomeTaxReconciliationTaxExemptIncome"/>
    <link:calculationArc order="5" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_IncomeTaxExpenseBenefit_7f3bcf18-5ad3-4ce1-a368-323fd0aa630c" xlink:to="loc_us-gaap_IncomeTaxReconciliationTaxExemptIncome_e17f0173-0acb-4750-8db7-a355075bbd99" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EffectiveIncomeTaxRateReconciliationShareBasedCompensationExcessTaxBenefitAmount_69f10169-3b59-4d14-b81d-db7ddfedc10a" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_EffectiveIncomeTaxRateReconciliationShareBasedCompensationExcessTaxBenefitAmount"/>
    <link:calculationArc order="6" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_IncomeTaxExpenseBenefit_7f3bcf18-5ad3-4ce1-a368-323fd0aa630c" xlink:to="loc_us-gaap_EffectiveIncomeTaxRateReconciliationShareBasedCompensationExcessTaxBenefitAmount_69f10169-3b59-4d14-b81d-db7ddfedc10a" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_ucbi_IncomeTaxReconciliationTaxTransactionCosts_9de0c89e-0fd4-411b-92b6-db10ebbe8ce6" xlink:href="ucbi-20241231.xsd#ucbi_IncomeTaxReconciliationTaxTransactionCosts"/>
    <link:calculationArc order="7" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_IncomeTaxExpenseBenefit_7f3bcf18-5ad3-4ce1-a368-323fd0aa630c" xlink:to="loc_ucbi_IncomeTaxReconciliationTaxTransactionCosts_9de0c89e-0fd4-411b-92b6-db10ebbe8ce6" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxReconciliationTaxCredits_5e352f1b-7066-4ac0-9f3a-7f532052d098" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_IncomeTaxReconciliationTaxCredits"/>
    <link:calculationArc order="8" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_IncomeTaxExpenseBenefit_7f3bcf18-5ad3-4ce1-a368-323fd0aa630c" xlink:to="loc_us-gaap_IncomeTaxReconciliationTaxCredits_5e352f1b-7066-4ac0-9f3a-7f532052d098" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxReconciliationOtherReconcilingItems_9331f67c-3863-4268-9fba-35d7d9716021" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_IncomeTaxReconciliationOtherReconcilingItems"/>
    <link:calculationArc order="9" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_IncomeTaxExpenseBenefit_7f3bcf18-5ad3-4ce1-a368-323fd0aa630c" xlink:to="loc_us-gaap_IncomeTaxReconciliationOtherReconcilingItems_9331f67c-3863-4268-9fba-35d7d9716021" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_ucbi_IncomeTaxReconciliationBankOwnedLifeInsuranceSurrender_04ddd424-c13e-4f97-bd39-5cc3a4475837" xlink:href="ucbi-20241231.xsd#ucbi_IncomeTaxReconciliationBankOwnedLifeInsuranceSurrender"/>
    <link:calculationArc order="10" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_IncomeTaxExpenseBenefit_7f3bcf18-5ad3-4ce1-a368-323fd0aa630c" xlink:to="loc_ucbi_IncomeTaxReconciliationBankOwnedLifeInsuranceSurrender_04ddd424-c13e-4f97-bd39-5cc3a4475837" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_ucbi_IncomeTaxReconciliationFederalDepositInsuranceCorporationPremiumExpense_1c2931ac-cd87-4c49-ad6c-5a79b8bb7dd1" xlink:href="ucbi-20241231.xsd#ucbi_IncomeTaxReconciliationFederalDepositInsuranceCorporationPremiumExpense"/>
    <link:calculationArc order="11" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_IncomeTaxExpenseBenefit_7f3bcf18-5ad3-4ce1-a368-323fd0aa630c" xlink:to="loc_ucbi_IncomeTaxReconciliationFederalDepositInsuranceCorporationPremiumExpense_1c2931ac-cd87-4c49-ad6c-5a79b8bb7dd1" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://ucbi.com/role/IncomeTaxesScheduleofdeferredtaxesDetails" xlink:type="simple" xlink:href="ucbi-20241231.xsd#IncomeTaxesScheduleofdeferredtaxesDetails"/>
  <link:calculationLink xlink:role="http://ucbi.com/role/IncomeTaxesScheduleofdeferredtaxesDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredTaxAssetsGross_5d30c538-b982-4adb-bb4f-fb52a0f07b2b" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DeferredTaxAssetsGross"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsProvisionForLoanLosses_dfe51a56-3358-4de5-a0c5-0299095372b6" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsProvisionForLoanLosses"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DeferredTaxAssetsGross_5d30c538-b982-4adb-bb4f-fb52a0f07b2b" xlink:to="loc_us-gaap_DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsProvisionForLoanLosses_dfe51a56-3358-4de5-a0c5-0299095372b6" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredTaxAssetsOperatingLossCarryforwards_5c131035-b915-4be7-9c4c-97b8c9337d67" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DeferredTaxAssetsOperatingLossCarryforwards"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DeferredTaxAssetsGross_5d30c538-b982-4adb-bb4f-fb52a0f07b2b" xlink:to="loc_us-gaap_DeferredTaxAssetsOperatingLossCarryforwards_5c131035-b915-4be7-9c4c-97b8c9337d67" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefits_84c681a5-a03a-4063-89cd-ac0cff4741dd" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefits"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DeferredTaxAssetsGross_5d30c538-b982-4adb-bb4f-fb52a0f07b2b" xlink:to="loc_us-gaap_DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefits_84c681a5-a03a-4063-89cd-ac0cff4741dd" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_ucbi_DeferredTaxAssetsLoanPurchaseAccountingAdjustment_982311dd-1db0-4106-8e38-9b7028baf30f" xlink:href="ucbi-20241231.xsd#ucbi_DeferredTaxAssetsLoanPurchaseAccountingAdjustment"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DeferredTaxAssetsGross_5d30c538-b982-4adb-bb4f-fb52a0f07b2b" xlink:to="loc_ucbi_DeferredTaxAssetsLoanPurchaseAccountingAdjustment_982311dd-1db0-4106-8e38-9b7028baf30f" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost_b806deb9-6bce-49f2-bab0-c9e0d9f1ce02" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost"/>
    <link:calculationArc order="5" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DeferredTaxAssetsGross_5d30c538-b982-4adb-bb4f-fb52a0f07b2b" xlink:to="loc_us-gaap_DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost_b806deb9-6bce-49f2-bab0-c9e0d9f1ce02" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAccruedLiabilities_97a6a021-a9c7-4a4a-8765-281df2a498a3" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAccruedLiabilities"/>
    <link:calculationArc order="6" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DeferredTaxAssetsGross_5d30c538-b982-4adb-bb4f-fb52a0f07b2b" xlink:to="loc_us-gaap_DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAccruedLiabilities_97a6a021-a9c7-4a4a-8765-281df2a498a3" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredTaxAssetsUnrealizedLossesOnAvailableforSaleSecuritiesGross_6c84dabf-5389-45f6-96f0-3924516b47d9" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DeferredTaxAssetsUnrealizedLossesOnAvailableforSaleSecuritiesGross"/>
    <link:calculationArc order="7" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DeferredTaxAssetsGross_5d30c538-b982-4adb-bb4f-fb52a0f07b2b" xlink:to="loc_us-gaap_DeferredTaxAssetsUnrealizedLossesOnAvailableforSaleSecuritiesGross_6c84dabf-5389-45f6-96f0-3924516b47d9" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_ucbi_DeferredTaxAssetsDeferredGainOnSBAUSDALoanSales_1eb42e6b-beab-40d0-87b0-379582445590" xlink:href="ucbi-20241231.xsd#ucbi_DeferredTaxAssetsDeferredGainOnSBAUSDALoanSales"/>
    <link:calculationArc order="8" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DeferredTaxAssetsGross_5d30c538-b982-4adb-bb4f-fb52a0f07b2b" xlink:to="loc_ucbi_DeferredTaxAssetsDeferredGainOnSBAUSDALoanSales_1eb42e6b-beab-40d0-87b0-379582445590" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_ucbi_DeferredTaxAssetsLeaseLiability_068c6d7e-7a15-4b5d-8c68-0cd432288adb" xlink:href="ucbi-20241231.xsd#ucbi_DeferredTaxAssetsLeaseLiability"/>
    <link:calculationArc order="9" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DeferredTaxAssetsGross_5d30c538-b982-4adb-bb4f-fb52a0f07b2b" xlink:to="loc_ucbi_DeferredTaxAssetsLeaseLiability_068c6d7e-7a15-4b5d-8c68-0cd432288adb" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredTaxAssetsOther_5a2e8448-50c9-41c6-b4ca-357dc437fd55" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DeferredTaxAssetsOther"/>
    <link:calculationArc order="10" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DeferredTaxAssetsGross_5d30c538-b982-4adb-bb4f-fb52a0f07b2b" xlink:to="loc_us-gaap_DeferredTaxAssetsOther_5a2e8448-50c9-41c6-b4ca-357dc437fd55" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredTaxAssetsInvestments_4488a23d-8b36-4f04-a42b-8b7504b7d234" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DeferredTaxAssetsInvestments"/>
    <link:calculationArc order="11" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DeferredTaxAssetsGross_5d30c538-b982-4adb-bb4f-fb52a0f07b2b" xlink:to="loc_us-gaap_DeferredTaxAssetsInvestments_4488a23d-8b36-4f04-a42b-8b7504b7d234" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredIncomeTaxLiabilities_b4191b81-4d70-43ed-9d8c-ccb8ccaca85b" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DeferredIncomeTaxLiabilities"/>
    <link:loc xlink:type="locator" xlink:label="loc_ucbi_DeferredTaxLiabilitiesRightOfUseAssets_c7a3df1d-ca5e-454d-9a73-76300ee60151" xlink:href="ucbi-20241231.xsd#ucbi_DeferredTaxLiabilitiesRightOfUseAssets"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DeferredIncomeTaxLiabilities_b4191b81-4d70-43ed-9d8c-ccb8ccaca85b" xlink:to="loc_ucbi_DeferredTaxLiabilitiesRightOfUseAssets_c7a3df1d-ca5e-454d-9a73-76300ee60151" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredTaxLiabilitiesLeasingArrangements_7d9d6809-26e5-4578-b811-17cc781a183e" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DeferredTaxLiabilitiesLeasingArrangements"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DeferredIncomeTaxLiabilities_b4191b81-4d70-43ed-9d8c-ccb8ccaca85b" xlink:to="loc_us-gaap_DeferredTaxLiabilitiesLeasingArrangements_7d9d6809-26e5-4578-b811-17cc781a183e" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredTaxLiabilitiesGoodwillAndIntangibleAssetsIntangibleAssets_12978a2d-ff1a-4ef0-9e71-12bb9597f046" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DeferredTaxLiabilitiesGoodwillAndIntangibleAssetsIntangibleAssets"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DeferredIncomeTaxLiabilities_b4191b81-4d70-43ed-9d8c-ccb8ccaca85b" xlink:to="loc_us-gaap_DeferredTaxLiabilitiesGoodwillAndIntangibleAssetsIntangibleAssets_12978a2d-ff1a-4ef0-9e71-12bb9597f046" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_ucbi_DeferredTaxLiabilitiesSecuritiesPurchaseAccountingAdjustments_796e759a-a8aa-4eb5-9454-0dbe88ea95a2" xlink:href="ucbi-20241231.xsd#ucbi_DeferredTaxLiabilitiesSecuritiesPurchaseAccountingAdjustments"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DeferredIncomeTaxLiabilities_b4191b81-4d70-43ed-9d8c-ccb8ccaca85b" xlink:to="loc_ucbi_DeferredTaxLiabilitiesSecuritiesPurchaseAccountingAdjustments_796e759a-a8aa-4eb5-9454-0dbe88ea95a2" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredTaxLiabilitiesPropertyPlantAndEquipment_8a831a33-36b2-4520-9493-bfb0598d999b" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DeferredTaxLiabilitiesPropertyPlantAndEquipment"/>
    <link:calculationArc order="5" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DeferredIncomeTaxLiabilities_b4191b81-4d70-43ed-9d8c-ccb8ccaca85b" xlink:to="loc_us-gaap_DeferredTaxLiabilitiesPropertyPlantAndEquipment_8a831a33-36b2-4520-9493-bfb0598d999b" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredTaxLiabilitiesDeferredExpenseDeferredFinancingCosts_bd6c4f72-4c7c-4aa7-8d43-de60886d92b2" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DeferredTaxLiabilitiesDeferredExpenseDeferredFinancingCosts"/>
    <link:calculationArc order="6" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DeferredIncomeTaxLiabilities_b4191b81-4d70-43ed-9d8c-ccb8ccaca85b" xlink:to="loc_us-gaap_DeferredTaxLiabilitiesDeferredExpenseDeferredFinancingCosts_bd6c4f72-4c7c-4aa7-8d43-de60886d92b2" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredTaxLiabilitiesMortgageServicingRights_c743f01e-c67c-4583-a888-77b2c43daf9e" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DeferredTaxLiabilitiesMortgageServicingRights"/>
    <link:calculationArc order="7" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DeferredIncomeTaxLiabilities_b4191b81-4d70-43ed-9d8c-ccb8ccaca85b" xlink:to="loc_us-gaap_DeferredTaxLiabilitiesMortgageServicingRights_c743f01e-c67c-4583-a888-77b2c43daf9e" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredTaxLiabilitiesOther_439543f1-d0dd-466f-acf0-2e7cf1a3c280" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DeferredTaxLiabilitiesOther"/>
    <link:calculationArc order="8" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DeferredIncomeTaxLiabilities_b4191b81-4d70-43ed-9d8c-ccb8ccaca85b" xlink:to="loc_us-gaap_DeferredTaxLiabilitiesOther_439543f1-d0dd-466f-acf0-2e7cf1a3c280" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_ucbi_DeferredTaxLiabilitiesUnrealizedGainOnCashFlowHedge_ae69add2-be0f-4e2c-a753-3a4e00c3e9ba" xlink:href="ucbi-20241231.xsd#ucbi_DeferredTaxLiabilitiesUnrealizedGainOnCashFlowHedge"/>
    <link:calculationArc order="9" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DeferredIncomeTaxLiabilities_b4191b81-4d70-43ed-9d8c-ccb8ccaca85b" xlink:to="loc_ucbi_DeferredTaxLiabilitiesUnrealizedGainOnCashFlowHedge_ae69add2-be0f-4e2c-a753-3a4e00c3e9ba" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_ucbi_DeferredTaxLiabilitiesBankOwnedLifeInsurance_2c2d5d11-0b73-483f-91ee-55572cccf75f" xlink:href="ucbi-20241231.xsd#ucbi_DeferredTaxLiabilitiesBankOwnedLifeInsurance"/>
    <link:calculationArc order="10" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DeferredIncomeTaxLiabilities_b4191b81-4d70-43ed-9d8c-ccb8ccaca85b" xlink:to="loc_ucbi_DeferredTaxLiabilitiesBankOwnedLifeInsurance_2c2d5d11-0b73-483f-91ee-55572cccf75f" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredTaxLiabilitiesDerivatives_b9cb4d3a-b69a-4e34-a176-319a7798d08a" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DeferredTaxLiabilitiesDerivatives"/>
    <link:calculationArc order="11" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DeferredIncomeTaxLiabilities_b4191b81-4d70-43ed-9d8c-ccb8ccaca85b" xlink:to="loc_us-gaap_DeferredTaxLiabilitiesDerivatives_b9cb4d3a-b69a-4e34-a176-319a7798d08a" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_ucbi_DeferredTaxLiabilityUncertainTaxPositions_30dd481e-5cb2-4599-a419-f7e126e878fc" xlink:href="ucbi-20241231.xsd#ucbi_DeferredTaxLiabilityUncertainTaxPositions"/>
    <link:calculationArc order="12" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DeferredIncomeTaxLiabilities_b4191b81-4d70-43ed-9d8c-ccb8ccaca85b" xlink:to="loc_ucbi_DeferredTaxLiabilityUncertainTaxPositions_30dd481e-5cb2-4599-a419-f7e126e878fc" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_ucbi_DeferredTaxLiabilitiesPreferredSecuritiesDebtIssuanceCosts_dc23f52d-db5d-4d6b-98b2-65c4a05e51cb" xlink:href="ucbi-20241231.xsd#ucbi_DeferredTaxLiabilitiesPreferredSecuritiesDebtIssuanceCosts"/>
    <link:calculationArc order="13" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DeferredIncomeTaxLiabilities_b4191b81-4d70-43ed-9d8c-ccb8ccaca85b" xlink:to="loc_ucbi_DeferredTaxLiabilitiesPreferredSecuritiesDebtIssuanceCosts_dc23f52d-db5d-4d6b-98b2-65c4a05e51cb" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredTaxAssetsLiabilitiesNet_f374f40f-899e-4aec-947a-be74c65e36f6" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DeferredTaxAssetsLiabilitiesNet"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredTaxAssetsGross_051a9c4b-1b29-49ba-83b0-7621fcfc03ae" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DeferredTaxAssetsGross"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DeferredTaxAssetsLiabilitiesNet_f374f40f-899e-4aec-947a-be74c65e36f6" xlink:to="loc_us-gaap_DeferredTaxAssetsGross_051a9c4b-1b29-49ba-83b0-7621fcfc03ae" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredIncomeTaxLiabilities_7ecff316-8766-4dc8-9a05-14e9e9dfe36b" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DeferredIncomeTaxLiabilities"/>
    <link:calculationArc order="2" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DeferredTaxAssetsLiabilitiesNet_f374f40f-899e-4aec-947a-be74c65e36f6" xlink:to="loc_us-gaap_DeferredIncomeTaxLiabilities_7ecff316-8766-4dc8-9a05-14e9e9dfe36b" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredTaxAssetsValuationAllowance_e663a552-6cdf-49b3-94a9-3af236df5712" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DeferredTaxAssetsValuationAllowance"/>
    <link:calculationArc order="3" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DeferredTaxAssetsLiabilitiesNet_f374f40f-899e-4aec-947a-be74c65e36f6" xlink:to="loc_us-gaap_DeferredTaxAssetsValuationAllowance_e663a552-6cdf-49b3-94a9-3af236df5712" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://ucbi.com/role/BenefitPlansScheduleofchangesinobligationsandplanassetsDetails" xlink:type="simple" xlink:href="ucbi-20241231.xsd#BenefitPlansScheduleofchangesinobligationsandplanassetsDetails"/>
  <link:calculationLink xlink:role="http://ucbi.com/role/BenefitPlansScheduleofchangesinobligationsandplanassetsDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanFundedStatusOfPlan_01a25981-b328-4736-ae44-59f0b50fbc3f" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DefinedBenefitPlanFundedStatusOfPlan"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanBenefitObligation_5b8ee5f4-ca4c-4f6b-9606-5e4c95f725d1" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DefinedBenefitPlanBenefitObligation"/>
    <link:calculationArc order="1" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DefinedBenefitPlanFundedStatusOfPlan_01a25981-b328-4736-ae44-59f0b50fbc3f" xlink:to="loc_us-gaap_DefinedBenefitPlanBenefitObligation_5b8ee5f4-ca4c-4f6b-9606-5e4c95f725d1" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanFairValueOfPlanAssets_59c0bb1a-bb44-4104-b459-089a49c5f465" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DefinedBenefitPlanFairValueOfPlanAssets"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DefinedBenefitPlanFundedStatusOfPlan_01a25981-b328-4736-ae44-59f0b50fbc3f" xlink:to="loc_us-gaap_DefinedBenefitPlanFairValueOfPlanAssets_59c0bb1a-bb44-4104-b459-089a49c5f465" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://ucbi.com/role/BenefitPlansScheduleofComponentsofnetperiodicbenefitcostDetails" xlink:type="simple" xlink:href="ucbi-20241231.xsd#BenefitPlansScheduleofComponentsofnetperiodicbenefitcostDetails"/>
  <link:calculationLink xlink:role="http://ucbi.com/role/BenefitPlansScheduleofComponentsofnetperiodicbenefitcostDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanNetPeriodicBenefitCost_caa9c3c0-b5e0-4db0-bdab-de4c297e70f4" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DefinedBenefitPlanNetPeriodicBenefitCost"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanServiceCost_fc0be4f1-0681-4c0f-bafa-325ae64cc55d" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DefinedBenefitPlanServiceCost"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DefinedBenefitPlanNetPeriodicBenefitCost_caa9c3c0-b5e0-4db0-bdab-de4c297e70f4" xlink:to="loc_us-gaap_DefinedBenefitPlanServiceCost_fc0be4f1-0681-4c0f-bafa-325ae64cc55d" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanInterestCost_5220ba07-6181-4ad7-91e9-cdfa9607db2e" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DefinedBenefitPlanInterestCost"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DefinedBenefitPlanNetPeriodicBenefitCost_caa9c3c0-b5e0-4db0-bdab-de4c297e70f4" xlink:to="loc_us-gaap_DefinedBenefitPlanInterestCost_5220ba07-6181-4ad7-91e9-cdfa9607db2e" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanAmortizationOfPriorServiceCostCredit_53d25ae1-d5f2-4d32-9cf7-205a07a73dc0" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DefinedBenefitPlanAmortizationOfPriorServiceCostCredit"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DefinedBenefitPlanNetPeriodicBenefitCost_caa9c3c0-b5e0-4db0-bdab-de4c297e70f4" xlink:to="loc_us-gaap_DefinedBenefitPlanAmortizationOfPriorServiceCostCredit_53d25ae1-d5f2-4d32-9cf7-205a07a73dc0" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanAmortizationOfGainsLosses_a99143b7-36e5-44d4-a20a-a8fcb6cbc1b1" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DefinedBenefitPlanAmortizationOfGainsLosses"/>
    <link:calculationArc order="4" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DefinedBenefitPlanNetPeriodicBenefitCost_caa9c3c0-b5e0-4db0-bdab-de4c297e70f4" xlink:to="loc_us-gaap_DefinedBenefitPlanAmortizationOfGainsLosses_a99143b7-36e5-44d4-a20a-a8fcb6cbc1b1" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://ucbi.com/role/CondensedFinancialStatementsofUnitedCommunityBanksIncHoldingCompanyOnlyScheduleofBalanceSheetsDetails" xlink:type="simple" xlink:href="ucbi-20241231.xsd#CondensedFinancialStatementsofUnitedCommunityBanksIncHoldingCompanyOnlyScheduleofBalanceSheetsDetails"/>
  <link:calculationLink xlink:role="http://ucbi.com/role/CondensedFinancialStatementsofUnitedCommunityBanksIncHoldingCompanyOnlyScheduleofBalanceSheetsDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Assets_f6c9d1b7-f4d8-4986-8865-7d0834ca302a" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_Assets"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CashAndCashEquivalentsAtCarryingValue_cb1377ff-86bd-4a62-ae79-0fea8fd099a3" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_CashAndCashEquivalentsAtCarryingValue"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Assets_f6c9d1b7-f4d8-4986-8865-7d0834ca302a" xlink:to="loc_us-gaap_CashAndCashEquivalentsAtCarryingValue_cb1377ff-86bd-4a62-ae79-0fea8fd099a3" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_ucbi_InvestmentsInBank_ba345a69-1638-432f-a4ff-9244c0a12588" xlink:href="ucbi-20241231.xsd#ucbi_InvestmentsInBank"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Assets_f6c9d1b7-f4d8-4986-8865-7d0834ca302a" xlink:to="loc_ucbi_InvestmentsInBank_ba345a69-1638-432f-a4ff-9244c0a12588" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherAssets_f646bf8b-a08f-45ab-b115-610f6ae0db86" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_OtherAssets"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Assets_f6c9d1b7-f4d8-4986-8865-7d0834ca302a" xlink:to="loc_us-gaap_OtherAssets_f646bf8b-a08f-45ab-b115-610f6ae0db86" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures_856f3fbf-0aa2-4704-b3c1-a03e4c36abd0" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Assets_f6c9d1b7-f4d8-4986-8865-7d0834ca302a" xlink:to="loc_us-gaap_InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures_856f3fbf-0aa2-4704-b3c1-a03e4c36abd0" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://ucbi.com/role/CondensedFinancialStatementsofUnitedCommunityBanksIncHoldingCompanyOnlyScheduleofStatementsofIncomeDetails" xlink:type="simple" xlink:href="ucbi-20241231.xsd#CondensedFinancialStatementsofUnitedCommunityBanksIncHoldingCompanyOnlyScheduleofStatementsofIncomeDetails"/>
  <link:calculationLink xlink:role="http://ucbi.com/role/CondensedFinancialStatementsofUnitedCommunityBanksIncHoldingCompanyOnlyScheduleofStatementsofIncomeDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_ucbi_CondensedIncomeStatementIncome_7afe49a3-09f0-4251-83bc-f5818b90d84c" xlink:href="ucbi-20241231.xsd#ucbi_CondensedIncomeStatementIncome"/>
    <link:loc xlink:type="locator" xlink:label="loc_ucbi_DividendIncomeReceivedFromConsolidatedSubsidiariesBank_b7310dc8-5460-43c2-b84c-ade16159f313" xlink:href="ucbi-20241231.xsd#ucbi_DividendIncomeReceivedFromConsolidatedSubsidiariesBank"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_ucbi_CondensedIncomeStatementIncome_7afe49a3-09f0-4251-83bc-f5818b90d84c" xlink:to="loc_ucbi_DividendIncomeReceivedFromConsolidatedSubsidiariesBank_b7310dc8-5460-43c2-b84c-ade16159f313" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_ucbi_DividendIncomeReceivedFromConsolidatedSubsidiariesOther_68a82a6f-686a-4f4f-bfbe-a4e74017d2af" xlink:href="ucbi-20241231.xsd#ucbi_DividendIncomeReceivedFromConsolidatedSubsidiariesOther"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_ucbi_CondensedIncomeStatementIncome_7afe49a3-09f0-4251-83bc-f5818b90d84c" xlink:to="loc_ucbi_DividendIncomeReceivedFromConsolidatedSubsidiariesOther_68a82a6f-686a-4f4f-bfbe-a4e74017d2af" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_ucbi_SharedServiceFeesFromSubsidiaries_c8b0c948-966f-40fc-8e6b-64afcd9cfdb5" xlink:href="ucbi-20241231.xsd#ucbi_SharedServiceFeesFromSubsidiaries"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_ucbi_CondensedIncomeStatementIncome_7afe49a3-09f0-4251-83bc-f5818b90d84c" xlink:to="loc_ucbi_SharedServiceFeesFromSubsidiaries_c8b0c948-966f-40fc-8e6b-64afcd9cfdb5" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherIncome_4efefe88-56d0-4c67-87e3-ab529d45bf7f" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_OtherIncome"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_ucbi_CondensedIncomeStatementIncome_7afe49a3-09f0-4251-83bc-f5818b90d84c" xlink:to="loc_us-gaap_OtherIncome_4efefe88-56d0-4c67-87e3-ab529d45bf7f" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_ucbi_IncomeLossBeforeEquityInUndistributedEarningsOfSubsidiaries_6e731580-89b9-4185-a1f2-44f39c1b474b" xlink:href="ucbi-20241231.xsd#ucbi_IncomeLossBeforeEquityInUndistributedEarningsOfSubsidiaries"/>
    <link:loc xlink:type="locator" xlink:label="loc_ucbi_CondensedIncomeStatementIncome_131dc79c-8463-4cc2-a65b-dc97c87fe349" xlink:href="ucbi-20241231.xsd#ucbi_CondensedIncomeStatementIncome"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_ucbi_IncomeLossBeforeEquityInUndistributedEarningsOfSubsidiaries_6e731580-89b9-4185-a1f2-44f39c1b474b" xlink:to="loc_ucbi_CondensedIncomeStatementIncome_131dc79c-8463-4cc2-a65b-dc97c87fe349" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_ucbi_CondensedIncomeStatementTotalExpense_8a0765f9-9ac9-45d3-abd1-4883dea52ad4" xlink:href="ucbi-20241231.xsd#ucbi_CondensedIncomeStatementTotalExpense"/>
    <link:calculationArc order="2" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_ucbi_IncomeLossBeforeEquityInUndistributedEarningsOfSubsidiaries_6e731580-89b9-4185-a1f2-44f39c1b474b" xlink:to="loc_ucbi_CondensedIncomeStatementTotalExpense_8a0765f9-9ac9-45d3-abd1-4883dea52ad4" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxExpenseBenefit_9991eae4-d928-48d5-943a-328578e069ec" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_IncomeTaxExpenseBenefit"/>
    <link:calculationArc order="3" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_ucbi_IncomeLossBeforeEquityInUndistributedEarningsOfSubsidiaries_6e731580-89b9-4185-a1f2-44f39c1b474b" xlink:to="loc_us-gaap_IncomeTaxExpenseBenefit_9991eae4-d928-48d5-943a-328578e069ec" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_ucbi_CondensedIncomeStatementTotalExpense_56d8d7a7-aab3-42cc-b399-c31c1f8a338b" xlink:href="ucbi-20241231.xsd#ucbi_CondensedIncomeStatementTotalExpense"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestExpenseOperating_26dbeca0-6387-4b5a-9305-8721ad27cfd7" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_InterestExpenseOperating"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_ucbi_CondensedIncomeStatementTotalExpense_56d8d7a7-aab3-42cc-b399-c31c1f8a338b" xlink:to="loc_us-gaap_InterestExpenseOperating_26dbeca0-6387-4b5a-9305-8721ad27cfd7" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherExpenses_11c960c1-9a23-4d4c-b8a5-d03beafb3ad1" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_OtherExpenses"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_ucbi_CondensedIncomeStatementTotalExpense_56d8d7a7-aab3-42cc-b399-c31c1f8a338b" xlink:to="loc_us-gaap_OtherExpenses_11c960c1-9a23-4d4c-b8a5-d03beafb3ad1" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetIncomeLoss_a9c481aa-7152-4c65-a3ed-bdf7da887aeb" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_NetIncomeLoss"/>
    <link:loc xlink:type="locator" xlink:label="loc_ucbi_IncomeLossBeforeEquityInUndistributedEarningsOfSubsidiaries_f32c3d27-00d4-4a96-b9bc-69b36cc16bf2" xlink:href="ucbi-20241231.xsd#ucbi_IncomeLossBeforeEquityInUndistributedEarningsOfSubsidiaries"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetIncomeLoss_a9c481aa-7152-4c65-a3ed-bdf7da887aeb" xlink:to="loc_ucbi_IncomeLossBeforeEquityInUndistributedEarningsOfSubsidiaries_f32c3d27-00d4-4a96-b9bc-69b36cc16bf2" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeLossFromSubsidiariesNetOfTax_2e2b5377-48ec-4aa6-bf46-2d067fcb7c6e" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_IncomeLossFromSubsidiariesNetOfTax"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetIncomeLoss_a9c481aa-7152-4c65-a3ed-bdf7da887aeb" xlink:to="loc_us-gaap_IncomeLossFromSubsidiariesNetOfTax_2e2b5377-48ec-4aa6-bf46-2d067fcb7c6e" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://ucbi.com/role/CondensedFinancialStatementsofUnitedCommunityBanksIncHoldingCompanyOnlyScheduleofStatementsofCashFlowsDetails" xlink:type="simple" xlink:href="ucbi-20241231.xsd#CondensedFinancialStatementsofUnitedCommunityBanksIncHoldingCompanyOnlyScheduleofStatementsofCashFlowsDetails"/>
  <link:calculationLink xlink:role="http://ucbi.com/role/CondensedFinancialStatementsofUnitedCommunityBanksIncHoldingCompanyOnlyScheduleofStatementsofCashFlowsDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_30d4b9ea-8caa-4781-8772-79d0e42c298d" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_NetCashProvidedByUsedInInvestingActivities"/>
    <link:loc xlink:type="locator" xlink:label="loc_ucbi_PaymentsToAcquireAvailableForSaleSecuritiesDebtAndEquitySecurities_fd99ee92-2491-4ec7-929e-e7977a350569" xlink:href="ucbi-20241231.xsd#ucbi_PaymentsToAcquireAvailableForSaleSecuritiesDebtAndEquitySecurities"/>
    <link:calculationArc order="1" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_30d4b9ea-8caa-4781-8772-79d0e42c298d" xlink:to="loc_ucbi_PaymentsToAcquireAvailableForSaleSecuritiesDebtAndEquitySecurities_fd99ee92-2491-4ec7-929e-e7977a350569" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsToAcquireBusinessesNetOfCashAcquired_0ca9ee3c-111d-481c-985d-ca2e429f8bbf" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_PaymentsToAcquireBusinessesNetOfCashAcquired"/>
    <link:calculationArc order="2" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_30d4b9ea-8caa-4781-8772-79d0e42c298d" xlink:to="loc_us-gaap_PaymentsToAcquireBusinessesNetOfCashAcquired_0ca9ee3c-111d-481c-985d-ca2e429f8bbf" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_ucbi_ProceedsFromOtherInvestingActivities_c5920769-5ea7-4f45-b4e6-2eb4cf46b0dc" xlink:href="ucbi-20241231.xsd#ucbi_ProceedsFromOtherInvestingActivities"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_30d4b9ea-8caa-4781-8772-79d0e42c298d" xlink:to="loc_ucbi_ProceedsFromOtherInvestingActivities_c5920769-5ea7-4f45-b4e6-2eb4cf46b0dc" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProceedsFromSaleAndMaturityOfTradingSecuritiesHeldforinvestment_671ea9a9-a5f3-48f8-838b-dbc55003afad" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ProceedsFromSaleAndMaturityOfTradingSecuritiesHeldforinvestment"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_30d4b9ea-8caa-4781-8772-79d0e42c298d" xlink:to="loc_us-gaap_ProceedsFromSaleAndMaturityOfTradingSecuritiesHeldforinvestment_671ea9a9-a5f3-48f8-838b-dbc55003afad" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_ucbi_PaymentsForOtherInvestingActivities_3c63f9f1-b62a-43ca-b56c-2b2100e6049c" xlink:href="ucbi-20241231.xsd#ucbi_PaymentsForOtherInvestingActivities"/>
    <link:calculationArc order="5" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_30d4b9ea-8caa-4781-8772-79d0e42c298d" xlink:to="loc_ucbi_PaymentsForOtherInvestingActivities_3c63f9f1-b62a-43ca-b56c-2b2100e6049c" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_ba6e048b-f04d-40ea-b103-a8e51067aeca" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_NetCashProvidedByUsedInFinancingActivities"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RepaymentsOfLongTermDebt_d044f349-f83f-4aa3-a3c9-ba96c03cd114" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_RepaymentsOfLongTermDebt"/>
    <link:calculationArc order="1" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_ba6e048b-f04d-40ea-b103-a8e51067aeca" xlink:to="loc_us-gaap_RepaymentsOfLongTermDebt_d044f349-f83f-4aa3-a3c9-ba96c03cd114" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_ucbi_PaymentsForOtherFinancingActivities_97d0467a-133a-46d7-8a2a-db4af3394f09" xlink:href="ucbi-20241231.xsd#ucbi_PaymentsForOtherFinancingActivities"/>
    <link:calculationArc order="2" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_ba6e048b-f04d-40ea-b103-a8e51067aeca" xlink:to="loc_ucbi_PaymentsForOtherFinancingActivities_97d0467a-133a-46d7-8a2a-db4af3394f09" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsForRepurchaseOfPreferredStockAndPreferenceStock_0ec6f14b-cffe-48ec-9887-0ee9ed85ff57" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_PaymentsForRepurchaseOfPreferredStockAndPreferenceStock"/>
    <link:calculationArc order="3" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_ba6e048b-f04d-40ea-b103-a8e51067aeca" xlink:to="loc_us-gaap_PaymentsForRepurchaseOfPreferredStockAndPreferenceStock_0ec6f14b-cffe-48ec-9887-0ee9ed85ff57" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProceedsFromIssuanceOfCommonStockDividendReinvestmentPlan_fa3867ae-017e-4625-b118-2544ae708063" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ProceedsFromIssuanceOfCommonStockDividendReinvestmentPlan"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_ba6e048b-f04d-40ea-b103-a8e51067aeca" xlink:to="loc_us-gaap_ProceedsFromIssuanceOfCommonStockDividendReinvestmentPlan_fa3867ae-017e-4625-b118-2544ae708063" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsRelatedToTaxWithholdingForShareBasedCompensation_d7bad886-245b-4727-baf4-2e3cf7b54fd5" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_PaymentsRelatedToTaxWithholdingForShareBasedCompensation"/>
    <link:calculationArc order="5" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_ba6e048b-f04d-40ea-b103-a8e51067aeca" xlink:to="loc_us-gaap_PaymentsRelatedToTaxWithholdingForShareBasedCompensation_d7bad886-245b-4727-baf4-2e3cf7b54fd5" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsOfDividendsCommonStock_ed275289-14d6-4980-90f3-5252d7e54535" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_PaymentsOfDividendsCommonStock"/>
    <link:calculationArc order="6" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_ba6e048b-f04d-40ea-b103-a8e51067aeca" xlink:to="loc_us-gaap_PaymentsOfDividendsCommonStock_ed275289-14d6-4980-90f3-5252d7e54535" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProceedsFromStockOptionsExercised_0ddae677-400d-4e3e-8f5f-7d827bf307bb" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ProceedsFromStockOptionsExercised"/>
    <link:calculationArc order="7" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_ba6e048b-f04d-40ea-b103-a8e51067aeca" xlink:to="loc_us-gaap_ProceedsFromStockOptionsExercised_0ddae677-400d-4e3e-8f5f-7d827bf307bb" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsOfDividendsPreferredStockAndPreferenceStock_2f5ec129-f33e-46d9-b5e2-f475a2d55e2c" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_PaymentsOfDividendsPreferredStockAndPreferenceStock"/>
    <link:calculationArc order="8" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_ba6e048b-f04d-40ea-b103-a8e51067aeca" xlink:to="loc_us-gaap_PaymentsOfDividendsPreferredStockAndPreferenceStock_2f5ec129-f33e-46d9-b5e2-f475a2d55e2c" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_d54bb049-3ffd-4fbe-b96a-edb40a9443c7" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_NetCashProvidedByUsedInOperatingActivities"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetIncomeLoss_423e0d7a-2a2b-48be-9930-4f3d924a618c" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_NetIncomeLoss"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_d54bb049-3ffd-4fbe-b96a-edb40a9443c7" xlink:to="loc_us-gaap_NetIncomeLoss_423e0d7a-2a2b-48be-9930-4f3d924a618c" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensation_f4b2cb8d-00a2-46b2-946f-572c5e9bb228" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ShareBasedCompensation"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_d54bb049-3ffd-4fbe-b96a-edb40a9443c7" xlink:to="loc_us-gaap_ShareBasedCompensation_f4b2cb8d-00a2-46b2-946f-572c5e9bb228" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GainsLossesOnExtinguishmentOfDebt_8899e274-3583-49ce-aad4-713eed46edd5" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_GainsLossesOnExtinguishmentOfDebt"/>
    <link:calculationArc order="3" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_d54bb049-3ffd-4fbe-b96a-edb40a9443c7" xlink:to="loc_us-gaap_GainsLossesOnExtinguishmentOfDebt_8899e274-3583-49ce-aad4-713eed46edd5" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeLossFromSubsidiariesNetOfTax_e859eb55-d209-4c70-a4ba-f756d86f189e" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_IncomeLossFromSubsidiariesNetOfTax"/>
    <link:calculationArc order="4" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_d54bb049-3ffd-4fbe-b96a-edb40a9443c7" xlink:to="loc_us-gaap_IncomeLossFromSubsidiariesNetOfTax_e859eb55-d209-4c70-a4ba-f756d86f189e" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInOtherOperatingLiabilities_f143765b-0a94-4c78-ae86-e0559a68a3ee" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_IncreaseDecreaseInOtherOperatingLiabilities"/>
    <link:calculationArc order="5" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_d54bb049-3ffd-4fbe-b96a-edb40a9443c7" xlink:to="loc_us-gaap_IncreaseDecreaseInOtherOperatingLiabilities_f143765b-0a94-4c78-ae86-e0559a68a3ee" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInOtherOperatingAssets_2b4a18b6-67f6-48d5-9aa4-9e7059ae0b59" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_IncreaseDecreaseInOtherOperatingAssets"/>
    <link:calculationArc order="6" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_d54bb049-3ffd-4fbe-b96a-edb40a9443c7" xlink:to="loc_us-gaap_IncreaseDecreaseInOtherOperatingAssets_2b4a18b6-67f6-48d5-9aa4-9e7059ae0b59" xlink:type="arc"/>
  </link:calculationLink>
</link:linkbase>
