v3.26.3
Capital Ratios (Details) - USD ($)
$ in Thousands
Sep. 30, 2026
Dec. 31, 2025
Capital Ratios    
Minimum capital required, capital amount $ 3,929,888 $ 3,625,944
Common equity Tier 1 to risk-weighted assets    
Actual, capital amount $ 6,258,075 $ 5,885,568
Actual, ratio (as a percent) 11.15% 11.36%
Minimum capital required, capital amount $ 4,772,007 $ 4,402,932
Minimum capital required, ratio (as a percent) 7.00% 7.00%
Tier I capital to risk-weighted assets    
Actual, capital amount $ 6,258,075 $ 5,885,568
Actual, ratio (as a percent) 0.1115 0.1136
Minimum capital required, capital amount $ 4,772,007 $ 4,402,932
Minimum capital required, ratio (as a percent) 0.085 0.085
Required to be considered well capitalized, capital amount $ 3,368,475 $ 4,143,936
Required to be considered well capitalized, ratio (as a percent) 0.06 0.06
Total capital to risk-weighted assets    
Actual, capital amount $ 7,565,823 $ 7,166,829
Actual, ratio (as a percent) 0.1348 0.1384
Minimum capital required, capital amount $ 5,894,832 $ 5,438,915
Minimum capital required, ratio (as a percent) 0.105 0.105
Required to be considered well capitalized, capital amount $ 5,614,126 $ 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 $ 6,258,075 $ 5,885,568
Actual, ratio (as a percent) 0.0949 0.0926
Minimum capital required, capital amount $ 2,637,909 $ 2,543,294
Minimum capital required, ratio (as a percent) 0.04 0.04
SouthState Bank (the Bank)    
Capital Ratios    
Minimum capital required, capital amount $ 3,927,367 $ 3,625,076
Common equity Tier 1 to risk-weighted assets    
Actual, capital amount $ 6,791,930 $ 6,496,379
Actual, ratio (as a percent) 12.11% 12.54%
Minimum capital required, capital amount $ 4,768,946 $ 4,401,878
Minimum capital required, ratio (as a percent) 7.00% 7.00%
Required to be considered well capitalized, capital amount $ 3,646,841 $ 3,366,142
Required to be considered well capitalized, ratio (as a percent) 6.50% 6.50%
Tier I capital to risk-weighted assets    
Actual, capital amount $ 6,791,930 $ 6,496,379
Actual, ratio (as a percent) 0.1211 0.1254
Minimum capital required, capital amount $ 4,768,946 $ 4,401,878
Minimum capital required, ratio (as a percent) 0.085 0.085
Required to be considered well capitalized, capital amount $ 4,488,419 $ 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 $ 7,404,078 $ 7,082,039
Actual, ratio (as a percent) 0.132 0.1368
Minimum capital required, capital amount $ 5,891,050 $ 5,437,614
Minimum capital required, ratio (as a percent) 0.105 0.105
Required to be considered well capitalized, capital amount $ 5,610,524 $ 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 $ 6,791,930 $ 6,496,379
Actual, ratio (as a percent) 0.1032 0.1022
Minimum capital required, capital amount $ 2,633,147 $ 2,542,489
Minimum capital required, ratio (as a percent) 0.04 0.04
Required to be considered well capitalized, capital amount $ 3,291,434 $ 3,178,111
Required to be considered well capitalized, ratio (as a percent) 0.05 0.05