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,
		2007		2006		2005		2004		2003
Income before income taxes	A	$	83,824	$	104,241	$	104,950	$	80,887	$	59,344
Interest expense:
Interest on deposits		$	294,914	$	265,729	$	156,252	$	83,135	$	67,963
Interest on other borrowings	C		55,093		43,330		34,025		20,787		15,536
Total interest expense	B	$	350,007	$	309,059	$	190,277	$	103,922	$	83,499
Ratio of earnings to fixed charges:
Including deposit interest	(A+B) / B		1.24x		1.34x		1.55x		1.78x		1.71x
Excluding deposit interest	(A+C) / C		2.52x		3.41x		4.08x		4.89x		4.82x