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Capital Ratios (Details) - USD ($) $ in Thousands | 3 Months Ended |  |  |  |  |  |  |
--- | --- | --- | --- | --- | --- | --- | --- | ---
Jun. 30, 2022 | Mar. 31, 2022 | Sep. 30, 2022 | Dec. 31, 2021 | Sep. 30, 2021 | Jun. 30, 2021 | Dec. 31, 2020 | Jan. 01, 2020 | Jan. 01, 2019
Capital ratios |  |  |  |  |  |  |  |  |
Capital conversion buffer common equity Tier 1 of risk-weighted assets (as a percent) |  |  |  |  |  |  |  |  | 2.50%
Additional allowance for credit losses for loans | $ 319,708 |  | $ 324,398 | $ 301,807 | $ 314,144 | $ 350,401 | $ 457,309 |  |
Deferred tax assets |  |  | 198,647 | 64,964 |  |  |  |  |
Additional reserve for unfunded commitments |  |  | 53,000 |  |  |  |  |  |
Retained earnings |  |  | 1,241,413 | 997,657 |  |  |  |  |
Phasing out percentage |  | 25.00% |  |  |  |  |  |  |
Reduction in total risk-based capital | 13,000 |  |  |  |  |  |  |  |
Common equity Tier 1 to risk-weighted assets |  |  |  |  |  |  |  |  |
Actual, Capital Amount |  |  | $ 3,666,829 | $ 3,201,644 |  |  |  |  |
Actual, Ratio (as a percent) |  |  | 11.02% | 11.75% |  |  |  |  |
Minimum capital required, Capital Amount |  |  | $ 2,328,284 | $ 1,906,831 |  |  |  |  |
Minimum capital required, Ratio (as a percent) |  |  | 7.00% | 7.00% |  |  |  |  |
Required to be considered well capitalized, Capital Amount |  |  | $ 2,161,978 | $ 1,770,629 |  |  |  |  |
Required to be considered well capitalized, Ratio (as a percent) |  |  | 6.50% | 6.50% |  |  |  |  |
Tier I capital to risk-weighted assets |  |  |  |  |  |  |  |  |
Actual, Capital Amount |  |  | $ 3,666,829 | $ 3,201,644 |  |  |  |  |
Actual, Ratio (as a percent) |  |  | 0.1102 | 0.1175 |  |  |  |  |
Minimum capital required, Capital Amount |  |  | $ 2,827,202 | $ 2,315,438 |  |  |  |  |
Minimum capital required, Ratio (as a percent) |  |  | 0.0850 | 0.0850 |  |  |  |  |
Required to be considered well capitalized, Capital Amount |  |  | $ 2,660,896 | $ 2,179,236 |  |  |  |  |
Required to be considered well capitalized, Ratio (as a percent) |  |  | 0.0800 | 0.0800 |  |  |  |  |
Total capital to risk-weighted assets |  |  |  |  |  |  |  |  |
Actual, Capital Amount |  |  | $ 4,311,208 | $ 3,692,674 |  |  |  |  |
Actual, Ratio (as a percent) |  |  | 0.1296 | 0.1356 |  |  |  |  |
Minimum capital required, Capital Amount |  |  | $ 3,492,427 | $ 2,860,247 |  |  |  |  |
Minimum capital required, Ratio (as a percent) |  |  | 0.1050 | 0.1050 |  |  |  |  |
Required to be considered well capitalized, Capital Amount |  |  | $ 3,326,121 | $ 2,724,045 |  |  |  |  |
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 |  |  | $ 3,666,829 | $ 3,201,644 |  |  |  |  |
Actual, Ratio (as a percent) |  |  | 0.0833 | 0.0805 |  |  |  |  |
Minimum capital required, Capital Amount |  |  | $ 1,760,176 | $ 1,590,045 |  |  |  |  |
Minimum capital required, Ratio (as a percent) |  |  | 0.0400 | 0.0400 |  |  |  |  |
Required to be considered well capitalized, Capital Amount |  |  | $ 2,200,220 | $ 1,987,556 |  |  |  |  |
Required to be considered well capitalized, Ratio (as a percent) |  |  | 0.0500 | 0.0500 |  |  |  |  |
ASU 2016-13 |  |  |  |  |  |  |  |  |
Capital ratios |  |  |  |  |  |  |  |  |
Additional allowance for credit losses for loans |  |  |  |  |  |  |  | $ 54,400 |
Deferred tax assets |  |  |  |  |  |  |  | 12,600 |
Retained earnings |  |  |  |  |  |  |  | (44,800) |
ASU 2016-13 | Adjustments |  |  |  |  |  |  |  |  |
Capital ratios |  |  |  |  |  |  |  |  |
Additional reserve for unfunded commitments |  |  |  |  |  |  |  | $ 6,400 |
Subordinated Debt. |  |  |  |  |  |  |  |  |
Capital ratios |  |  |  |  |  |  |  |  |
Trust preferred securities redeemed | $ 13,000 |  |  |  |  |  |  |  |
SouthState Bank (the Bank) |  |  |  |  |  |  |  |  |
Common equity Tier 1 to risk-weighted assets |  |  |  |  |  |  |  |  |
Actual, Capital Amount |  |  | $ 3,956,892 | $ 3,431,069 |  |  |  |  |
Actual, Ratio (as a percent) |  |  | 11.91% | 12.62% |  |  |  |  |
Minimum capital required, Capital Amount |  |  | $ 2,325,129 | $ 1,902,954 |  |  |  |  |
Minimum capital required, Ratio (as a percent) |  |  | 7.00% | 7.00% |  |  |  |  |
Required to be considered well capitalized, Capital Amount |  |  | $ 2,159,049 | $ 1,767,029 |  |  |  |  |
Required to be considered well capitalized, Ratio (as a percent) |  |  | 6.50% | 6.50% |  |  |  |  |
Tier I capital to risk-weighted assets |  |  |  |  |  |  |  |  |
Actual, Capital Amount |  |  | $ 3,956,892 | $ 3,431,069 |  |  |  |  |
Actual, Ratio (as a percent) |  |  | 0.1191 | 0.1262 |  |  |  |  |
Minimum capital required, Capital Amount |  |  | $ 2,823,371 | $ 2,310,730 |  |  |  |  |
Minimum capital required, Ratio (as a percent) |  |  | 0.0850 | 0.0850 |  |  |  |  |
Required to be considered well capitalized, Capital Amount |  |  | $ 2,657,291 | $ 2,174,804 |  |  |  |  |
Required to be considered well capitalized, Ratio (as a percent) |  |  | 0.0800 | 0.0800 |  |  |  |  |
Total capital to risk-weighted assets |  |  |  |  |  |  |  |  |
Actual, Capital Amount |  |  | $ 4,211,272 | $ 3,594,099 |  |  |  |  |
Actual, Ratio (as a percent) |  |  | 0.1268 | 0.1322 |  |  |  |  |
Minimum capital required, Capital Amount |  |  | $ 3,487,694 | $ 2,854,431 |  |  |  |  |
Minimum capital required, Ratio (as a percent) |  |  | 0.1050 | 0.1050 |  |  |  |  |
Required to be considered well capitalized, Capital Amount |  |  | $ 3,321,613 | $ 2,718,505 |  |  |  |  |
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 |  |  | $ 3,956,892 | $ 3,431,069 |  |  |  |  |
Actual, Ratio (as a percent) |  |  | 0.0900 | 0.0865 |  |  |  |  |
Minimum capital required, Capital Amount |  |  | $ 1,759,585 | $ 1,587,212 |  |  |  |  |
Minimum capital required, Ratio (as a percent) |  |  | 0.0400 | 0.0400 |  |  |  |  |
Required to be considered well capitalized, Capital Amount |  |  | $ 2,199,481 | $ 1,984,015 |  |  |  |  |
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 |  |  |  |  |  |  |  |  |
Required to be considered well capitalized, 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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