Consolidated Statements Of Income - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017		Sep. 30, 2016
INTEREST INCOME
Interest and fees on loans	$ 138,827	$ 123,750	$ 401,423		$ 364,234
Interest and fees on loans held for sale	287	334	746		1,161
Interest on investment securities	50,585	51,661	160,825		155,250
Interest on federal funds sold and short-term securities purchased under agreements to resell	78	20	138		63
Interest on long-term securities purchased under agreements to resell	3,805	3,328	11,282		10,157
Interest on deposits with banks	662	268	1,421		689
Total interest income	194,244	179,361	575,835		531,554
INTEREST EXPENSE
Savings, interest checking and money market	4,441	3,619	12,673		10,651
Time open and C.D.'s of less than $100,000	676	683	1,994		2,134
Time open and C.D.'s of $100,000 and over	2,784	2,186	8,369		6,519
Interest on federal funds purchased and securities sold under agreements to repurchase	2,846	724	6,423		2,337
Interest on other borrowings	906	906	2,705		3,066
Total interest expense	11,653	8,118	32,164		24,707
Net interest income	182,591	171,243	543,671		506,847
Provision for loan losses	10,704	7,263	32,590		25,918
Net interest income after provision for loan losses	171,887	163,980	511,081		480,929
NON-INTEREST INCOME
Bank card transaction fees	44,521	47,006	132,724		136,541
Trust fees	34,620	30,951	99,754		90,435
Deposit account charges and other fees	22,659	22,241	67,462		64,260
Capital market fees	1,755	2,751	6,253		7,976
Consumer brokerage services	3,679	3,375	11,054		10,375
Loan fees and sales	3,590	3,123	10,849		8,829
Other	11,418	9,872	34,296		36,497
Total non-interest income	122,242	119,319	362,392		354,913
INVESTMENT SECURITIES GAINS (LOSSES), NET
Investment securities gains (losses), net	(3,037)	(1,965)	(2,158)	[1]	(3,704)	[1]
NON-INTEREST EXPENSE
Salaries and employee benefits	111,382	107,004	332,580		318,671
Net occupancy	11,459	12,366	34,332		34,761
Equipment	4,491	4,842	13,876		14,257
Supplies and communication	5,517	5,968	16,672		18,490
Data processing and software	22,700	23,663	69,153		69,332
Marketing	4,676	4,399	12,388		12,601
Deposit insurance	3,479	3,576	10,542		9,884
Other	20,868	19,424	66,453		57,808
Total non-interest expense	184,572	181,242	555,996		535,804
Income before income taxes	106,520	100,092	315,319		296,334
Less income taxes	32,294	30,942	90,402		91,854
Net income	74,226	69,150	224,917		204,480
Less non-controlling interest expense (income)	(338)	605	(111)		668
Net income attributable to Commerce Bancshares, Inc.	74,564	68,545	225,028		203,812
Preferred Stock Dividends	2,250	2,250	6,750		6,750
Net Income (Loss) Available to Common Stockholders	$ 72,314	$ 66,295	$ 218,278		$ 197,062
Net income per common share - basic	$ 0.71	$ 0.65	$ 2.14		$ 1.94
Net income per common share - diluted	$ 0.71	$ 0.65	$ 2.14		$ 1.93

[1] Available for sale and non-marketable securities