REGULATORY CAPITAL (Tables)

9 Months Ended

Sep. 30, 2012

REGULATORY CAPITAL

Schedule of actual and required capital amounts and ratios

	Actual				Required for Adequate Capital				To Be Well Capitalized
September 30, 2012	Amount		Ratio		Amount		Ratio		Amount		Ratio
MainSource Financial Group
Total capital (to risk-weighted assets)	$	310,322	18.8	%	$	132,235	8.0	%	N/A		N/A
Tier 1 capital (to risk-weighted assets)	289,665		17.5		66,118		4.0		N/A		N/A
Tier 1 capital (to average assets)	289,665		10.9		106,383		4.0		N/A		N/A
MainSource Bank
Total capital (to risk-weighted assets)	$	290,097	17.7	%	$	131,035	8.0	%	$	163,712	10.0	%
Tier 1 capital (to risk-weighted assets)	269,442		16.5		65,518		4.0		98,227		6.0
Tier 1 capital (to average assets)	269,442		10.2		105,183		4.0		135,074		5.0
	Actual				Required for Adequate Capital				To Comply with Regulatory Agreement
December 31, 2011	Amount		Ratio		Amount		Ratio		Amount		Ratio
MainSource Financial Group
Total capital (to risk-weighted assets)	$	313,902	18.9	%	133,201		8.0	%	N/A		N/A
Tier 1 capital (to risk-weighted assets)	293,039		17.6		66,601		4.0		N/A		N/A
Tier 1 capital (to average assets)	293,039		10.8		108,875		4.0		N/A		N/A
MainSource Bank	299,054		18.1	%	132,001		8.0	%	181,502		11.0	%
Total capital (to risk-weighted assets)	278,191		16.9		66,001		4.0		—		—
Tier 1 capital (to risk-weighted assets)	278,191		10.3		107,675		4.0		215,350		8.0
Tier 1 capital (to average assets)