Consolidated Statements Of Income - USD ($) $ in Thousands		3 Months Ended
		Mar. 31, 2017	Mar. 31, 2016
INTEREST INCOME
Interest and fees on loans		$ 128,323	$ 119,333
Interest and fees on loans held for sale		196	135
Interest on investment securities		55,265	48,891
Interest on federal funds sold and short-term securities purchased under agreements to resell		23	24
Interest on long-term securities purchased under agreements to resell		3,793	3,475
Interest on deposits with banks		397	270
Total interest income		187,997	172,128
INTEREST EXPENSE
Savings, interest checking and money market		3,890	3,484
Time open and C.D.'s of less than $100,000		644	742
Time open and C.D.'s of $100,000 and over		2,763	1,986
Interest on federal funds purchased and securities sold under agreements to repurchase		1,539	888
Interest on other borrowings		888	1,253
Total interest expense		9,724	8,353
Net interest income		178,273	163,775
Provision for loan losses		11,128	9,439
Net interest income after provision for loan losses		167,145	154,336
NON-INTEREST INCOME
Bank card transaction fees		43,204	44,470
Trust fees		32,014	29,243
Deposit account charges and other fees		21,942	20,691
Capital market fees		2,342	2,725
Consumer brokerage services		3,649	3,509
Loan fees and sales		3,168	2,510
Other		10,747	15,876
Total non-interest income		117,066	119,024
INVESTMENT SECURITIES GAINS (LOSSES), NET
Investment securities gains (losses), net	[1]	(772)	(995)
NON-INTEREST EXPENSE
Salaries and employee benefits		112,369	106,859
Net occupancy		11,443	11,303
Equipment		4,609	4,634
Supplies and communication		5,709	6,829
Data processing and software		23,097	22,899
Marketing		3,224	3,813
Deposit insurance		3,471	3,165
Other		22,908	17,971
Total non-interest expense		186,830	177,473
Income before income taxes		96,609	94,892
Less income taxes		24,907	29,370
Net income		71,702	65,522
Less non-controlling interest expense (income)		198	148
Net income attributable to Commerce Bancshares, Inc.		71,504	65,374
Preferred Stock Dividends		2,250	2,250
Net Income (Loss) Available to Common Stockholders		$ 69,254	$ 63,124
Net income per common share - basic		$ 0.68	$ 0.62
Net income per common share - diluted		$ 0.68	$ 0.62

[1] Available for sale and non-marketable securities