Regulatory Capital and Dividends (Tables)

12 Months Ended

Dec. 31, 2021

Banking and Thrift, Interest [Abstract]

Schedule of Actual and Required Capital Amounts and Ratios

The Corporation's and Bank's actual and required capital ratios as of December 31, 2021 and December 31, 2020 were as follows:

					Prompt Corrective Action Thresholds
	Actual				Basel III Minimum Capital Required				Well Capitalized
December 31, 2021	Amount		Ratio		Amount		Ratio		Amount		Ratio
Total risk-based capital to risk-weighted assets
First Merchants Corporation	$	1,582,481	13.92	%	$	1,193,840	10.50	%	N/A		N/A
First Merchants Bank	1,453,358		12.74		1,197,515		10.50		$	1,140,490	10.00	%
Tier 1 capital to risk-weighted assets
First Merchants Corporation	$	1,374,240	12.09	%	$	966,442	8.50	%	N/A		N/A
First Merchants Bank	1,309,685		11.48		969,417		8.50		$	912,392	8.00	%
Common equity tier 1 capital to risk-weighted assets
First Merchants Corporation	$	1,327,634	11.68	%	$	795,893	7.00	%	N/A		N/A
First Merchants Bank	1,309,685		11.48		798,343		7.00		$	741,319	6.50	%
Tier 1 capital to average assets
First Merchants Corporation	$	1,374,240	9.30	%	$	590,758	4.00	%	N/A		N/A
First Merchants Bank	1,309,685		8.88		589,994		4.00		$	737,493	5.00	%
					Prompt Corrective Action Thresholds
	Actual				Basel III Minimum Capital Required				Well Capitalized
December 31, 2020	Amount		Ratio		Amount		Ratio		Amount		Ratio
Total risk-based capital to risk-weighted assets
First Merchants Corporation	$	1,475,551	14.36	%	$	1,079,015	10.50	%	N/A		N/A
First Merchants Bank	1,412,805		13.70		1,082,430		10.50		$	1,030,886	10.00	%
Tier 1 capital to risk-weighted assets
First Merchants Corporation	$	1,282,070	12.48	%	$	873,488	8.50	%	N/A		N/A
First Merchants Bank	1,283,922		12.45		876,253		8.50		$	824,708	8.00	%
Common equity tier 1 capital to risk-weighted assets
First Merchants Corporation	$	1,235,702	12.02	%	$	719,343	7.00	%	N/A		N/A
First Merchants Bank	1,283,922		12.45		721,620		7.00		$	670,076	6.50	%
Tier 1 capital to average assets
First Merchants Corporation	$	1,282,070	9.57	%	$	536,123	4.00	%	N/A		N/A
First Merchants Bank	1,283,922		9.59		535,279		4.00		$	669,098	5.00	%