Wintrust Financial Corporation
Form 10-K, Exhibit 12.1

Computation of Ratio of Earnings to Fixed Charges

The following table presents the calculation of the ratio of earnings to fixed charges for the last five years.

(dollars in thousands)

		Years ended December 31,
		2010			2009			2008			2007			2006
Income before income taxes	A	$	100,807		$	117,504		$	30,641		$	83,824		$	104,241
Interest expense:
Interest on deposits		$	123,779		$	171,259		$	219,437		$	294,914		$	265,729
Interest on other borrowings	C		53,492			44,479			50,719			55,093			43,330
Total interest expense	B	$	177,271		$	215,738		$	270,156		$	350,007		$	309,059
Ratio of earnings to fixed charges:
Including deposit interest	(A+B) / B		1.57	x		1.54	x		1.11	x		1.24	x		1.34	x
Excluding deposit interest	(A+C) / C		2.88	x		3.64	x		1.60	x		2.52	x		3.41	x