REGULATORY MATTERS (Tables)

12 Months Ended

Dec. 31, 2016

REGULATORY MATTERS

Schedule of actual and required capital amounts and ratios

					Required for				To Be
	Actual				Adequate Capital				Well Capitalized
December 31, 2016	Amount		Ratio		Amount		Ratio		Amount		Ratio
MainSource Financial Group
Total capital (to risk-weighted assets)	$	407,802	14.7	%	$	222,095	8.0	%		N/A	N/A
Tier 1 capital (to risk-weighted assets)		385,303	13.9			166,571	6.0			N/A	N/A
Common equity Tier 1 capital (to risk-weighted assets)		344,212	12.4			124,928	4.5			N/A	N/A
Tier 1 capital (to average assets)		385,303	9.8			157,671	4.0			N/A	N/A
MainSource Bank
Total capital (to risk-weighted assets)	$	407,939	14.7	%	$	222,152	8.0	%	$	277,690	10.0	%
Tier 1 capital (to risk-weighted assets)		385,440	13.9			166,614	6.0			222,152	8.0
Common equity Tier 1 capital (to risk-weighted assets)		385,440	13.9			124,960	4.5			180,498	6.5
Tier 1 capital (to average assets)		385,440	9.8			157,390	4.0			196,737	5.0

					Required for				To Be
	Actual				Adequate Capital				Well Capitalized
December 31, 2015	Amount		Ratio		Amount		Ratio		Amount		Ratio
MainSource Financial Group
Total capital (to risk-weighted assets)	$	356,210	15.5	%	$	184,170	8.0	%		N/A	N/A
Tier 1 capital (to risk-weighted assets)		334,190	14.5			138,127	6.0			N/A	N/A
Common equity Tier 1 capital (to risk-weighted assets)		293,316	12.7			103,595	4.5			N/A	N/A
Tier 1 capital (to average assets)		334,190	10.2			130,845	4.0			N/A	N/A
MainSource Bank
Total capital (to risk-weighted assets)	$	334,266	14.5	%	$	184,168	8.0	%	$	230,211	10.0	%
Tier 1 capital (to risk-weighted assets)		312,246	13.6			138,126	6.0			184,168	8.0
Common equity Tier 1 capital (to risk-weighted assets)		312,246	13.6			103,595	4.5			149,637	6.5
Tier 1 capital (to average assets)		312,246	9.6			130,555	4.0			163,194	5.0