Minimum Capital Requirements

12 Months Ended

Dec. 31, 2024

Broker-Dealer, Net Capital Requirement, SEC Regulation [Abstract]

Minimum Capital Requirements

Minimum capital requirements

Banks and bank holding companies are subject to regulatory capital requirements administered by federal banking agencies. Capital adequacy guidelines and, additionally for banks, prompt corrective action regulations involve quantitative measures of assets, liabilities, and certain off-balance sheet items calculated under regulatory accounting practices. Capital amounts and classifications are also subject to qualitative judgments by regulators. Failure to meet capital requirements can initiate regulatory action.

Under regulatory guidance for non-advanced approach institutions, the Bank and Company are required to maintain minimum capital ratios as outlined in the table below. Minimum risk-based capital adequacy ratios below include a capital conservation buffer of 2.50%. As of December 31, 2024 and 2023, the Bank and Company met all capital adequacy requirements to which they are subject. Additionally, under U.S. Basel III Capital Rules, the Bank and Company opted out of including accumulated other comprehensive income in regulatory capital.

The Company elected to phase-in the impact related to adopting ASU 2016-13 over the permissible five-year transition relief period and delayed the initial impact of CECL adoption plus 25% of the quarterly increases in ACL in the first two years after adoption. Beginning in 2022, the cumulative amount of the transition adjustments became fixed and were phased out in annual increments over a three-year period. 2024 represents the final year of this CECL adoption phase out, with 25% of the initial impact of CECL adoption being adjusted out of regulatory capital calculations.

Actual and required capital amounts and ratios are included below as of the dates indicated.

December 31, 2024	Actual				Minimum Requirement for Capital Adequacy with Capital Buffer				To Qualify as Well-Capitalized Under Prompt Corrective Action Provisions
	Amount		Ratio		Amount		Ratio		Amount		Ratio
Total Capital (to risk-weighted assets)
FB Financial Corporation	$	1,721,941	15.2	%	$	1,187,163	10.5	%	N/A		N/A
FirstBank	1,650,305		14.7	%	1,175,095		10.5	%	$	1,119,138	10.0	%
Tier 1 Capital (to risk-weighted assets)
FB Financial Corporation	$	1,480,722	13.1	%	$	961,037	8.5	%	N/A		N/A
FirstBank	1,410,505		12.6	%	951,267		8.5	%	$	895,310	8.0	%
Common Equity Tier 1 Capital    (to risk-weighted assets)
FB Financial Corporation	$	1,450,722	12.8	%	$	791,442	7.0	%	N/A		N/A
FirstBank	1,410,505		12.6	%	783,397		7.0	%	$	727,440	6.5	%
Tier 1 Capital (to average assets)
FB Financial Corporation	$	1,480,722	11.3	%	$	522,557	4.0	%	N/A		N/A
FirstBank	1,410,505		10.8	%	521,538		4.0	%	$	651,923	5.0	%

December 31, 2023	Actual				Minimum Requirement for Capital Adequacy with Capital Buffer				To Qualify as Well-Capitalized Under Prompt Corrective Action Provisions
	Amount		Ratio		Amount		Ratio		Amount		Ratio
Total Capital (to risk-weighted assets)
FB Financial Corporation	$	1,635,848	14.5	%	$	1,182,028	10.5	%	N/A		N/A
FirstBank	1,600,950		14.2	%	1,179,886		10.5	%	$	1,123,701	10.0	%
Tier 1 Capital (to risk-weighted assets)
FB Financial Corporation	$	1,405,890	12.5	%	$	956,880	8.5	%	N/A		N/A
FirstBank	1,370,991		12.2	%	955,145		8.5	%	$	898,960	8.0	%
Common Equity Tier 1 Capital (to risk-weighted assets)
FB Financial Corporation	$	1,375,890	12.2	%	$	788,018	7.0	%	N/A		N/A
FirstBank	1,370,991		12.2	%	786,590		7.0	%	$	730,405	6.5	%
Tier 1 Capital (to average assets)
FB Financial Corporation	$	1,405,890	11.3	%	$	496,485	4.0	%	N/A		N/A
FirstBank	1,370,991		11.1	%	495,761		4.0	%	$	619,701	5.0	%