Consolidated Statements Of Income (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012		Jun. 30, 2011
INTEREST INCOME
Interest and fees on loans	$ 112,252	$ 116,769	$ 224,008		$ 235,146
Interest and fees on loans held for sale	88	309	193		607
Interest on investment securities	57,561	57,712	111,319		112,601
Interest on short-term federal funds sold and securities purchased under agreements to resell	29	22	46		32
Interest on long-term securities purchased under agreements to resell	4,582	3,165	8,857		5,327
Interest on deposits with banks	112	110	167		200
Total interest income	174,624	178,087	344,590		353,913
INTEREST EXPENSE
Savings, interest checking and money market	4,634	6,372	9,715		13,272
Time open and C.D.'s of less than $100,000	2,004	2,965	4,110		6,708
Time open and C.D.'s of $100,000 and over	1,828	2,434	3,739		5,107
Interest on federal funds purchased and securities sold under agreements to repurchase	177	687	402		1,309
Interest on other borrowings	876	919	1,782		1,834
Total interest expense	9,519	13,377	19,748		28,230
Net interest income	165,105	164,710	324,842		325,683
Provision for loan losses	5,215	12,188	13,380		27,977
Net interest income after provision for loan losses	159,890	152,522	311,462		297,706
NON-INTEREST INCOME
Bank card transaction fees	38,434	41,304	73,167		78,766
Trust fees	23,833	22,544	46,647		44,116
Deposit account charges and other fees	19,975	20,789	39,311		40,089
Capital market fees	5,010	4,979	11,881		9,699
Consumer brokerage services	2,576	2,880	5,102		5,543
Loan fees and sales	1,706	2,075	3,267		3,899
Other	9,282	6,773	16,024		15,138
Total non-interest income	100,816	101,344	195,399		197,250
INVESTMENT SECURITIES GAINS (LOSSES), NET
Impairment (losses) reversals on debt securities	3	(2,119)	5,590		4,186
Noncredit-related losses (reversals) on securities not expected to be sold	(353)	1,469	(6,260)		(5,110)
Net impairment losses	(350)	(650)	(670)		(924)
Realized gains on sales and fair value adjustments	1,686	2,606	6,046		4,207
Investment securities gains, net	1,336	1,956	5,376	[1]	3,283	[1]
NON-INTEREST EXPENSE
Salaries and employee benefits	87,511	84,223	177,054		171,615
Net occupancy	11,105	11,213	22,365		23,250
Equipment	4,999	5,702	10,188		11,279
Supplies and communication	5,667	5,692	11,280		11,224
Data processing and software	18,282	17,531	35,751		33,998
Marketing	4,469	4,495	8,291		8,753
Deposit insurance	2,618	2,780	5,138		7,671
Visa litigation	5,690	0	5,690		(1,359)
Other	15,999	21,877	31,044		41,042
Total non-interest expense	156,340	153,513	306,801		307,473
Income before income taxes	105,702	102,309	205,436		190,766
Less income taxes	34,466	32,692	67,386		60,199
Net income	71,236	69,617	138,050		130,567
Less non-controlling interest expense	503	583	1,518		1,080
Net income attributable to Commerce Bancshares, Inc.	$ 70,733	$ 69,034	$ 136,532		$ 129,487
Net income per common share - basic	$ 0.80	$ 0.76	$ 1.54		$ 1.42
Net income per common share - diluted	$ 0.80	$ 0.75	$ 1.54		$ 1.41

[1] Available for sale and non-marketable securities