REGULATORY CAPITAL (Tables)

6 Months Ended

Jun. 30, 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 bank:

	As of June 30, 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	$	1,888,100	12.22	%	$	695,299	4.50	%	$	1,004,321	6.50	%
Busey Bank	$	2,098,016	13.62	%	$	692,964	4.50	%	$	1,000,949	6.50	%
Tier 1 capital to risk weighted assets
First Busey	$	2,110,850	13.66	%	$	927,065	6.00	%	$	1,236,087	8.00	%
Busey Bank	$	2,098,016	13.62	%	$	923,953	6.00	%	$	1,231,937	8.00	%
Total capital to risk weighted assets
First Busey	$	2,434,172	15.75	%	$	1,236,087	8.00	%	$	1,545,109	10.00	%
Busey Bank	$	2,237,760	14.53	%	$	1,231,937	8.00	%	$	1,539,921	10.00	%
Leverage ratio of Tier 1 capital to average assets
First Busey	$	2,110,850	11.26	%	$	749,585	4.00	%	N/A		N/A
Busey Bank	$	2,098,016	11.22	%	$	747,971	4.00	%	$	934,963	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	%