Minimum capital requirements

12 Months Ended

Dec. 31, 2019

Banking and Thrift [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 approaches institutions, the Bank and Company are required to maintain minimum amounts and ratios of common equity Tier I capital to risk-weighted assets. Additionally, under U.S. Basel III Capital Rules, the decision was made to opt-out of including accumulated other comprehensive income in regulatory capital. As of December 31, 2019 and 2018, the Bank and Company met all capital adequacy requirements to which they are subject.

Beginning in 2016, an additional conservation buffer was added to the minimum requirements for capital adequacy

purposes, subject to a three year phase-in period. As of December 31, 2019 and 2018, the buffer was 2.50% and 1.88%, respectively. The capital conservation buffer was fully phased in on January 1, 2019.

Actual and required capital amounts and ratios are presented below at period-end.

	Actual				Forcapital adequacy purposes				Minimum Capital adequacy with capital buffer				To be well capitalized underprompt corrective action provisions
	Amount		Ratio		Amount		Ratio		Amount		Ratio		Amount		Ratio
December 31, 2019
Total Capital (to risk-weighted assets)
FB Financial Corporation	$	633,549	12.2	%	$	415,442	8.0	%	$	545,268	10.5	%	N/A		N/A
FirstBank	623,432		12.1	%	412,186		8.0	%	540,995		10.5	%	$	515,233	10.0	%
Tier 1 Capital (to risk-weighted assets)
FB Financial Corporation	$	602,410	11.6	%	$	311,591	6.0	%	$	441,421	8.5	%	N/A		N/A
FirstBank	592,293		11.5	%	309,022		6.0	%	437,782		8.5	%	$	412,030	8.0	%
Tier 1 Capital (to average assets)
FB Financial Corporation	$	602,410	10.1	%	$	238,578	4.0	%	N/A		N/A		N/A		N/A
FirstBank	592,293		9.9	%	239,310		4.0	%	N/A		N/A		$	299,138	5.0	%
Common Equity Tier 1 Capital (to risk-weighted assets)
FB Financial Corporation	$	572,410	11.1	%	$	232,058	4.5	%	$	360,979	7.0	%	N/A		N/A
FirstBank	592,293		11.5	%	231,767		4.5	%	360,526		7.0	%	$	334,774	6.5	%

	Actual				For capital adequacy purposes				Minimum Capital adequacy with capital buffer				To be well capitalized under prompt corrective action provisions
	Amount		Ratio		Amount		Ratio		Amount		Ratio		Amount		Ratio
December 31, 2018
Total Capital (to risk-weighted assets)
FB Financial Corporation	$	582,945	13.0	%	$	358,735	8.0	%	$	442,814	9.9	%	N/A		N/A
FirstBank	561,327		12.5	%	359,249		8.0	%	443,448		9.9	%	$	449,062	10.0	%
Tier 1 Capital (to risk-weighted assets)
FB Financial Corporation	$	554,013	12.4	%	$	268,071	6.0	%	$	351,843	7.9	%	N/A		N/A
FirstBank	532,395		11.9	%	268,434		6.0	%	352,320		7.9	%	$	357,913	8.0	%
Tier 1 Capital (to average assets)
FB Financial Corporation	$	554,013	11.4	%	$	194,391	4.0	%	N/A		N/A		N/A		N/A
FirstBank	532,395		10.9	%	195,374		4.0	%	N/A		N/A		$	244,218	5.0	%
Common Equity Tier 1 Capital (to risk-weighted assets)
FB Financial Corporation	$	524,013	11.7	%	$	201,543	4.5	%	$	285,520	6.4	%	N/A		N/A
FirstBank	532,395		11.9	%	201,326		4.5	%	285,212		6.4	%	$	290,804	6.5	%