Consolidated Statements of Income (USD $) In Thousands, except Per Share data	3 Months Ended		9 Months Ended
	Sep. 30, 2011	Sep. 30, 2010	Sep. 30, 2011		Sep. 30, 2010
INTEREST INCOME
Interest and fees on loans	$ 114,731	$ 126,273	$ 349,877		$ 385,976
Interest and fees on loans held for sale	270	1,368	877		5,533
Interest on investment securities	51,697	50,295	164,298		159,259
Interest on short-term federal funds sold and securities purchased under agreements to resell	13	12	45		40
Interest on long-term securities purchased under agreements to resell	3,913	862	9,240		862
Interest on deposits with banks	211	106	411		372
Total interest income	170,835	178,916	524,748		552,042
INTEREST EXPENSE
Savings, interest checking and money market	6,445	7,261	19,717		22,068
Time open and C.D.'s of less than $100,000	2,413	5,444	9,121		18,318
Time open and C.D.'s of $100,000 and over	2,130	3,461	7,237		10,946
Interest on federal funds purchased and securities sold under agreements to repurchase	292	584	1,601		2,230
Interest on other borrowings	925	2,729	2,759		13,225
Total interest expense	12,205	19,479	40,435		66,787
Net interest income	158,630	159,437	484,313		485,255
Provision for loan losses	11,395	21,844	39,372		78,353
Net interest income after provision for loan losses	147,235	137,593	444,941		406,902
NON-INTEREST INCOME
Bank card transaction fees	42,149	37,723	120,915		107,872
Trust fees	22,102	20,170	66,218		59,846
Deposit account charges and other fees	21,939	21,693	62,028		71,146
Bond trading income	5,556	5,133	15,255		15,524
Consumer brokerage services	2,333	2,390	7,876		6,879
Loan fees and sales	2,034	5,830	5,933		11,141
Other	5,519	7,071	20,657		22,249
Total non-interest income	101,632	100,010	298,882		294,657
INVESTMENT SECURITIES GAINS (LOSSES), NET
Impairment (losses) reversals on debt securities	(1,200)	5,645	2,986		11,355
Noncredit-related losses (reversals) on securities not expected to be sold	369	(7,690)	(4,741)		(15,533)
Net impairment losses	(831)	(2,045)	(1,755)		(4,178)
Realized gains on sales and fair value adjustments	3,418	2,061	7,625		1,189
Investment securities gains (losses), net	2,587	16	5,870	[1]	(2,989)	[1]
NON-INTEREST EXPENSE
Salaries and employee benefits	85,700	85,442	257,315		259,988
Net occupancy	11,510	12,086	34,760		35,697
Equipment	5,390	5,709	16,669		17,548
Supplies and communication	5,674	6,724	16,898		20,891
Data processing and software	16,232	16,833	50,230		50,936
Marketing	4,545	5,064	13,298		14,784
Deposit insurance	2,772	4,756	10,443		14,445
Indemnification obligation			(1,359)		(1,683)
Other	21,923	18,972	62,965		54,497
Total non-interest expense	153,746	155,586	461,219		467,103
Income before income taxes	97,708	82,033	288,474		231,467
Less income taxes	31,699	26,012	91,898		71,817
Net income	66,009	56,021	196,576		159,650
Less non-controlling interest expense (income)	657	136	1,737		(139)
Net income attributable to Commerce Bancshares, Inc.	$ 65,352	$ 55,885	$ 194,839		$ 159,789
Net income per common share - basic	$ 0.76	$ 0.63	$ 2.25		$ 1.82
Net income per common share - diluted	$ 0.76	$ 0.64	$ 2.24		$ 1.82

[1] Available for sale and non-marketable securities