EXHIBIT 12

F.N.B. Corporation and Subsidiaries

Computation of Ratio of Earnings to Fixed Charges

Dollars in thousands

Year Ended December 31	2011		2010		2009			2008		2007
Earnings:
Income before income taxes	$	119,051	$	102,536	$	50,380		$	42,832	$	98,139
Fixed charges, excluding interest on deposits		23,402		26,285		41,560			48,312		51,510
Less: Preferred stock dividends		—		—		(4,085	)		—		—
Subtotal		142,453		128,821		87,855			91,144		149,649
Interest on deposits		53,535		64,524		85,699			111,568		124,276
Total	$	195,988	$	193,345	$	173,554		$	202,712	$	273,925
Fixed charges:
Interest on borrowed funds	$	21,082	$	24,207	$	35,480		$	46,421	$	49,777
Interest component of rental expense		2,320		2,078		1,995			1,891		1,733
Preferred stock dividends		—		—		4,085			—		—
Subtotal		23,402		26,285		41,560			48,312		51,510
Interest on deposits		53,535		64,524		85,699			111,568		124,276
Total	$	76,937	$	90,809	$	127,269		$	159,880	$	175,786
Ratio of earnings to fixed charges:
Excluding interest on deposits		6.09x		4.90x		2.24x			1.89x		2.91x
Including interest on deposits		2.55x		2.13x		1.38x			1.27x		1.56x
Ratio of earnings to fixed charges and preferred stock dividends:
Excluding interest on deposits		6.09x		4.90x		2.11x			1.89x		2.91x
Including interest on deposits		2.55x		2.13x		1.36x			1.27x		1.56x