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Capital Ratios (Details) - USD ($) $ in Thousands | Mar. 31, 2026 | Dec. 31, 2025 | Jan. 01, 2019
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Capital Ratios |  |  |
Capital conversion buffer common equity Tier 1 of risk-weighted assets (as a percent) |  |  | 2.50%
Common equity Tier 1 to risk-weighted assets |  |  |
Actual, capital amount | $ 5,993,557 | $ 5,885,568 |
Actual, ratio (as a percent) | 0.1127% | 11.36% |
Required to be considered well capitalized, capital amount | $ 3,456,856 | $ 3,366,948 |
Required to be considered well capitalized, ratio (as a percent) | 0.065% | 6.50% |
Tier I capital to risk-weighted assets |  |  |
Actual, capital amount | $ 5,993,557 | $ 5,885,568 |
Actual, ratio (as a percent) | 0.1127 | 0.1136 |
Required to be considered well capitalized, capital amount | $ 4,254,592 | $ 4,143,936 |
Required to be considered well capitalized, ratio (as a percent) | 0.08 | 0.08 |
Total capital to risk-weighted assets |  |  |
Actual, capital amount | $ 7,279,005 | $ 7,166,829 |
Actual, ratio (as a percent) | 0.1369 | 0.1384 |
Required to be considered well capitalized, capital amount | $ 5,318,240 | $ 5,179,920 |
Required to be considered well capitalized, ratio (as a percent) | 0.10 | 0.10 |
Tier I capital to average assets (leverage ratio) |  |  |
Actual, capital amount | $ 5,993,557 | $ 5,885,568 |
Actual, ratio (as a percent) | 0.0938 | 0.0926 |
Required to be considered well capitalized, capital amount | $ 3,196,366 | $ 3,179,117 |
Required to be considered well capitalized, ratio (as a percent) | 0.05 | 0.05 |
SouthState Bank (the Bank) |  |  |
Common equity Tier 1 to risk-weighted assets |  |  |
Actual, capital amount | $ 6,553,175 | $ 6,496,379 |
Actual, ratio (as a percent) | 0.1233% | 12.54% |
Required to be considered well capitalized, capital amount | $ 3,455,369 | $ 3,366,142 |
Required to be considered well capitalized, ratio (as a percent) | 0.065% | 6.50% |
Tier I capital to risk-weighted assets |  |  |
Actual, capital amount | $ 6,553,175 | $ 6,496,379 |
Actual, ratio (as a percent) | 0.1233 | 0.1254 |
Required to be considered well capitalized, capital amount | $ 4,252,762 | $ 4,142,944 |
Required to be considered well capitalized, ratio (as a percent) | 0.08 | 0.08 |
Total capital to risk-weighted assets |  |  |
Actual, capital amount | $ 7,143,023 | $ 7,082,039 |
Actual, ratio (as a percent) | 0.1344 | 0.1368 |
Required to be considered well capitalized, capital amount | $ 5,315,953 | $ 5,178,680 |
Required to be considered well capitalized, ratio (as a percent) | 0.10 | 0.10 |
Tier I capital to average assets (leverage ratio) |  |  |
Actual, capital amount | $ 6,553,175 | $ 6,496,379 |
Actual, ratio (as a percent) | 0.1027 | 0.1022 |
Required to be considered well capitalized, capital amount | $ 3,191,950 | $ 3,178,111 |
Required to be considered well capitalized, ratio (as a percent) | 0.05 | 0.05 |
Fully Phased-In |  |  |
Common equity Tier 1 to risk-weighted assets |  |  |
Actual, capital amount | $ 3,722,768 | $ 3,625,944 |
Minimum capital required, capital amount | $ 4,520,504 | $ 4,402,932 |
Minimum capital required, ratio (as a percent) | 0.07% | 7.00% |
Tier I capital to risk-weighted assets |  |  |
Minimum capital required, capital amount | $ 4,520,504 | $ 4,402,932 |
Minimum capital required, ratio (as a percent) | 0.085 | 0.085 |
Total capital to risk-weighted assets |  |  |
Minimum capital required, capital amount | $ 5,584,152 | $ 5,438,915 |
Minimum capital required, ratio (as a percent) | 0.105 | 0.105 |
Tier I capital to average assets (leverage ratio) |  |  |
Minimum capital required, capital amount | $ 2,557,093 | $ 2,543,294 |
Minimum capital required, ratio (as a percent) | 0.04 | 0.04 |
Fully Phased-In | SouthState Bank (the Bank) |  |  |
Common equity Tier 1 to risk-weighted assets |  |  |
Actual, capital amount | $ 3,721,167 | $ 3,625,076 |
Minimum capital required, capital amount | $ 4,518,560 | $ 4,401,878 |
Minimum capital required, ratio (as a percent) | 0.07% | 7.00% |
Tier I capital to risk-weighted assets |  |  |
Minimum capital required, capital amount | $ 4,518,560 | $ 4,401,878 |
Minimum capital required, ratio (as a percent) | 0.085 | 0.085 |
Total capital to risk-weighted assets |  |  |
Minimum capital required, capital amount | $ 5,581,750 | $ 5,437,614 |
Minimum capital required, ratio (as a percent) | 0.105 | 0.105 |
Tier I capital to average assets (leverage ratio) |  |  |
Minimum capital required, capital amount | $ 2,553,560 | $ 2,542,489 |
Minimum capital required, ratio (as a percent) | 0.04 | 0.04 |
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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