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Capital Ratios (Details) - USD ($) $ in Thousands | 9 Months Ended |  |  |  |  |  |  |
--- | --- | --- | --- | --- | --- | --- | --- | ---
Sep. 30, 2024 | Jun. 30, 2024 | Dec. 31, 2023 | Sep. 30, 2023 | Jun. 30, 2023 | Dec. 31, 2022 | Jan. 31, 2020 | Jan. 01, 2019
Regulatory Matters |  |  |  |  |  |  |  |
Minimum capital required, Capital Amount | $ 2,506,088 |  | $ 2,476,926 |  |  |  |  |
Capital conversion buffer common equity Tier 1 of risk-weighted assets (as a percent) |  |  |  |  |  |  |  | 2.50%
Additional allowance for credit losses for loans | 467,981 | $ 472,298 | 456,573 | $ 447,956 | $ 427,392 | $ 356,444 |  |
Deferred tax assets | 122,384 |  | 164,354 |  |  |  |  |
Additional reserve for unfunded commitments | 41,500 |  |  |  |  |  |  |
Retained earnings | $ 1,943,874 |  | 1,685,166 |  |  |  |  |
Phasing out percentage | 25.00% |  |  |  |  |  |  |
Common equity Tier 1 to risk-weighted assets |  |  |  |  |  |  |  |
Actual, Capital Amount | $ 4,430,297 |  | $ 4,159,187 |  |  |  |  |
Actual, Ratio (as a percent) | 12.37% |  | 11.75% |  |  |  |  |
Minimum capital required, Capital Amount | $ 3,043,106 |  | $ 3,007,696 |  |  |  |  |
Minimum capital required, Ratio (as a percent) | 7.00% |  | 7.00% |  |  |  |  |
Required to be considered well capitalized, Capital Amount | $ 2,327,081 |  | $ 2,300,003 |  |  |  |  |
Required to be considered well capitalized, Ratio (as a percent) | 6.50% |  | 6.50% |  |  |  |  |
Tier I capital to risk-weighted assets |  |  |  |  |  |  |  |
Actual, Capital Amount | $ 4,430,297 |  | $ 4,159,187 |  |  |  |  |
Actual, Ratio (as a percent) | 0.1237 |  | 0.1175 |  |  |  |  |
Minimum capital required, Capital Amount | $ 3,043,106 |  | $ 3,007,696 |  |  |  |  |
Minimum capital required, Ratio (as a percent) | 0.0850 |  | 0.0850 |  |  |  |  |
Required to be considered well capitalized, Capital Amount | $ 2,864,100 |  | $ 2,830,773 |  |  |  |  |
Required to be considered well capitalized, Ratio (as a percent) | 0.0800 |  | 0.0800 |  |  |  |  |
Total capital to risk-weighted assets |  |  |  |  |  |  |  |
Actual, Capital Amount | $ 5,271,150 |  | $ 4,983,012 |  |  |  |  |
Actual, Ratio (as a percent) | 0.1472 |  | 0.1408 |  |  |  |  |
Minimum capital required, Capital Amount | $ 3,759,131 |  | $ 3,715,389 |  |  |  |  |
Minimum capital required, Ratio (as a percent) | 0.1050 |  | 0.1050 |  |  |  |  |
Required to be considered well capitalized, Capital Amount | $ 3,580,125 |  | $ 3,538,466 |  |  |  |  |
Required to be considered well capitalized, Ratio (as a percent) | 0.1000 |  | 0.1000 |  |  |  |  |
Tier I capital to average assets (leverage ratio) |  |  |  |  |  |  |  |
Actual, Capital Amount | $ 4,430,297 |  | $ 4,159,187 |  |  |  |  |
Actual, Ratio (as a percent) | 0.0998 |  | 0.0942 |  |  |  |  |
Minimum capital required, Capital Amount | $ 1,776,398 |  | $ 1,765,295 |  |  |  |  |
Minimum capital required, Ratio (as a percent) | 0.0400 |  | 0.0400 |  |  |  |  |
Required to be considered well capitalized, Capital Amount | $ 2,220,497 |  | $ 2,206,619 |  |  |  |  |
Required to be considered well capitalized, Ratio (as a percent) | 0.0500 |  | 0.0500 |  |  |  |  |
ASU 2016-13 |  |  |  |  |  |  |  |
Regulatory Matters |  |  |  |  |  |  |  |
Additional allowance for credit losses for loans |  |  |  |  |  |  | $ 54,400 |
Deferred tax assets |  |  |  |  |  |  | 12,600 |
Retained earnings |  |  |  |  |  |  | 44,800 |
ASU 2016-13 | Adjustments |  |  |  |  |  |  |  |
Regulatory Matters |  |  |  |  |  |  |  |
Additional reserve for unfunded commitments |  |  |  |  |  |  | $ 6,400 |
SouthState Bank (the Bank) |  |  |  |  |  |  |  |
Regulatory Matters |  |  |  |  |  |  |  |
Minimum capital required, Capital Amount | $ 2,503,356 |  | $ 2,473,961 |  |  |  |  |
Common equity Tier 1 to risk-weighted assets |  |  |  |  |  |  |  |
Actual, Capital Amount | $ 4,702,224 |  | $ 4,424,466 |  |  |  |  |
Actual, Ratio (as a percent) | 13.15% |  | 12.52% |  |  |  |  |
Minimum capital required, Capital Amount | $ 3,039,789 |  | $ 3,004,096 |  |  |  |  |
Minimum capital required, Ratio (as a percent) | 7.00% |  | 7.00% |  |  |  |  |
Required to be considered well capitalized, Capital Amount | $ 2,324,544 |  | $ 2,297,250 |  |  |  |  |
Required to be considered well capitalized, Ratio (as a percent) | 6.50% |  | 6.50% |  |  |  |  |
Tier I capital to risk-weighted assets |  |  |  |  |  |  |  |
Actual, Capital Amount | $ 4,702,224 |  | $ 4,424,466 |  |  |  |  |
Actual, Ratio (as a percent) | 0.1315 |  | 0.1252 |  |  |  |  |
Minimum capital required, Capital Amount | $ 3,039,789 |  | $ 3,004,096 |  |  |  |  |
Minimum capital required, Ratio (as a percent) | 0.0850 |  | 0.0850 |  |  |  |  |
Required to be considered well capitalized, Capital Amount | $ 2,860,978 |  | $ 2,827,384 |  |  |  |  |
Required to be considered well capitalized, Ratio (as a percent) | 0.0800 |  | 0.0800 |  |  |  |  |
Total capital to risk-weighted assets |  |  |  |  |  |  |  |
Actual, Capital Amount | $ 5,152,981 |  | $ 4,858,292 |  |  |  |  |
Actual, Ratio (as a percent) | 0.1441 |  | 0.1375 |  |  |  |  |
Minimum capital required, Capital Amount | $ 3,755,033 |  | $ 3,710,942 |  |  |  |  |
Minimum capital required, Ratio (as a percent) | 0.1050 |  | 0.1050 |  |  |  |  |
Required to be considered well capitalized, Capital Amount | $ 3,576,222 |  | $ 3,534,230 |  |  |  |  |
Required to be considered well capitalized, Ratio (as a percent) | 0.1000 |  | 0.1000 |  |  |  |  |
Tier I capital to average assets (leverage ratio) |  |  |  |  |  |  |  |
Actual, Capital Amount | $ 4,702,224 |  | $ 4,424,466 |  |  |  |  |
Actual, Ratio (as a percent) | 0.1059 |  | 0.1003 |  |  |  |  |
Minimum capital required, Capital Amount | $ 1,775,892 |  | $ 1,764,736 |  |  |  |  |
Minimum capital required, Ratio (as a percent) | 0.0400 |  | 0.0400 |  |  |  |  |
Required to be considered well capitalized, Capital Amount | $ 2,219,865 |  | $ 2,205,921 |  |  |  |  |
Required to be considered well capitalized, Ratio (as a percent) | 0.0500 |  | 0.0500 |  |  |  |  |
Minimum |  |  |  |  |  |  |  |
Common equity Tier 1 to risk-weighted assets |  |  |  |  |  |  |  |
Actual, Ratio (as a percent) | 4.50% |  |  |  |  |  |  |
Tier I capital to risk-weighted assets |  |  |  |  |  |  |  |
Minimum capital required, Ratio (as a percent) | 0.06 |  |  |  |  |  |  |
Total capital to risk-weighted assets |  |  |  |  |  |  |  |
Actual, Ratio (as a percent) | 0.04 |  |  |  |  |  |  |
Tier I capital to average assets (leverage ratio) |  |  |  |  |  |  |  |
Actual, Ratio (as a percent) | 0.08 |  |  |  |  |  |  |

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