REGULATORY CAPITAL (Tables)

3 Months Ended

Mar. 31, 2025

Banking and Thrift, Other Disclosure [Abstract]

Schedule of Regulatory Capital Requirements Applicable to Busey and Busey Bank

The following tables summarize regulatory capital requirements applicable to First Busey and its subsidiary banks:

	As of March 31, 2025
	Actual				Minimum Capital Requirement				Minimum To Be Well Capitalized
(dollars in thousands)	Amount		Ratio		Amount		Ratio		Amount		Ratio
Common equity Tier 1 capital to risk weighted assets
First Busey	$	1,871,865	12.00	%	$	702,221	4.50	%	$	1,014,319	6.50	%
Busey Bank	$	1,420,244	16.21	%	$	394,316	4.50	%	$	569,568	6.50	%
CrossFirst Bank	$	652,977	9.60	%	$	306,018	4.50	%	$	442,027	6.50	%
Tier 1 capital to risk weighted assets
First Busey	$	1,879,615	12.05	%	$	936,295	6.00	%	$	1,248,393	8.00	%
Busey Bank	$	1,420,244	16.21	%	$	525,755	6.00	%	$	701,007	8.00	%
CrossFirst Bank	$	652,977	9.60	%	$	408,025	6.00	%	$	544,033	8.00	%
Total capital to risk weighted assets
First Busey	$	2,321,708	14.88	%	$	1,248,393	8.00	%	$	1,560,491	10.00	%
Busey Bank	$	1,508,341	17.21	%	$	701,007	8.00	%	$	876,259	10.00	%
CrossFirst Bank	$	698,395	10.27	%	$	544,033	8.00	%	$	680,041	10.00	%
Leverage ratio of Tier 1 capital to average assets
First Busey	$	1,879,615	12.95	%	$	580,626	4.00	%	N/A		N/A
Busey Bank	$	1,420,244	12.08	%	$	470,374	4.00	%	$	587,967	5.00	%
CrossFirst Bank	$	652,977	8.78	%	$	297,548	4.00	%	$	371,936	5.00	%

	As of December 31, 2024
	Actual				Minimum Capital Requirement				Minimum To Be Well Capitalized
(dollars in thousands)	Amount		Ratio		Amount		Ratio		Amount		Ratio
Common equity Tier 1 capital to risk weighted assets
First Busey	$	1,237,301	14.10	%	$	394,840	4.50	%	$	570,325	6.50	%
Busey Bank	$	1,438,296	16.46	%	$	393,277	4.50	%	$	568,067	6.50	%
Tier 1 capital to risk weighted assets
First Busey	$	1,314,301	14.98	%	$	526,453	6.00	%	$	701,938	8.00	%
Busey Bank	$	1,438,296	16.46	%	$	524,369	6.00	%	$	699,159	8.00	%
Total capital to risk weighted assets
First Busey	$	1,625,943	18.53	%	$	701,938	8.00	%	$	877,422	10.00	%
Busey Bank	$	1,520,938	17.40	%	$	699,159	8.00	%	$	873,949	10.00	%
Leverage ratio of Tier 1 capital to average assets
First Busey	$	1,314,301	11.06	%	$	475,348	4.00	%	N/A		N/A
Busey Bank	$	1,438,296	12.14	%	$	473,878	4.00	%	$	592,347	5.00	%