Consolidated Statements of Income (Unaudited) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Interest income:
Interest and fees on loans	$ 116,664	$ 89,993	$ 303,183	$ 269,266
Interest on securities
Taxable	6,843	3,989	18,762	10,652
Tax-exempt	1,818	1,883	5,526	5,772
Other	3,158	800	6,353	2,089
Total interest income	128,483	96,665	333,824	287,779
Interest expense:
Interest expense on deposits	13,133	6,596	25,186	24,341
Interest expense on borrowings	3,966	1,593	6,901	5,823
Total interest expense	17,099	8,189	32,087	30,164
Net interest income	111,384	88,476	301,737	257,615
Provision for credit losses	8,189	(2,832)	10,241	(27,349)
Provision for credit losses on unfunded commitments	3,178	301	9,197	(2,875)
Net interest income after provisions for credit losses	100,017	91,007	282,299	287,839
Noninterest income:
(Loss) gain from securities, net	(140)	51	(401)	278
Gain (loss) on sales or write-downs of other real estate owned	435	2,005	(89)	2,478
(Loss) gain from other assets	(6)	177	76	162
Other income	1,870	1,398	4,420	6,578
Total noninterest income	22,592	59,006	97,198	175,036
Noninterest expenses:
Salaries, commissions and employee benefits	51,028	62,818	165,652	189,756
Occupancy and equipment expense	6,011	5,979	17,267	17,184
Legal and professional fees	4,448	2,177	10,171	6,701
Data processing	2,334	2,595	7,219	7,456
Amortization of core deposit and other intangibles	1,108	1,344	3,546	4,178
Advertising	2,050	4,200	8,114	10,012
Mortgage restructuring expense	0	0	12,458	0
Other expense	14,868	15,894	43,689	47,378
Total noninterest expense	81,847	95,007	268,116	282,665
Income before income taxes	40,762	55,006	111,381	180,210
Income tax expense	8,931	9,716	24,961	38,744
Net income applicable to FB Financial Corporation and noncontrolling interest	31,831	45,290	86,420	141,466
Net income applicable to noncontrolling interest	0	0	8	8
Net income applicable to FB Financial Corporation	$ 31,831	$ 45,290	$ 86,412	$ 141,458
Earnings per common share
Basic (in dollars per share)	$ 0.68	$ 0.96	$ 1.83	$ 2.99
Diluted (in dollars per share)	$ 0.68	$ 0.94	$ 1.83	$ 2.95
Mortgage banking income
Noninterest income:
Mortgage banking income, service charges on deposit accounts, ATM and interchange fees, investment services and trust income	$ 12,384	$ 45,384	$ 64,474	$ 136,215
Service charges on deposit accounts
Noninterest income:
Mortgage banking income, service charges on deposit accounts, ATM and interchange fees, investment services and trust income	3,208	2,612	9,030	7,217
ATM and interchange fees
Noninterest income:
Mortgage banking income, service charges on deposit accounts, ATM and interchange fees, investment services and trust income	2,614	4,868	13,054	14,590
Investment services and trust income
Noninterest income:
Mortgage banking income, service charges on deposit accounts, ATM and interchange fees, investment services and trust income	$ 2,227	$ 2,511	$ 6,634	$ 7,518