| Interest income | — | — | — |
| Interest and fees on loans | 1,062.77a | 984.4a | 646.29a |
| Interest on loans held for sale | 0.17a | 0.58a | 0.64a |
| Interest on investment securities | 271.77a | 278.76a | 313.89a |
| Interest on federal funds sold | 0.05a | 0.66a | 0.41a |
| Interest on securities purchased under agreements to resell | 13.36a | 13.65a | 22.65a |
| Interest on deposits with banks | 121.44a | 103.25a | 15.1a |
| Total interest income | 1,469.56a | 1,381.29a | 998.98a |
| Interest expense | — | — | — |
| Interest on deposits: | — | — | — |
| Savings, interest checking and money market | -226.88a | -146.39a | -25.1a |
| Certificates of deposit of less than $100,000 | -42.23a | -38.69a | -1.47a |
| Certificates of deposit of $100,000 and over | -67.06a | -61.06a | -3.9a |
| Interest on federal funds purchased | -12.22a | -25.27a | -1.84a |
| Interest on securities sold under agreements to repurchase | -80.91a | -73.16a | -24.02a |
| Interest on other borrowings | -0.02a | -38.59a | -0.47a |
| Total interest expense | -429.31a | -383.16a | -56.79a |
| Net interest income | 1,040.25a | 998.13a | 942.19a |
| Provision for credit losses | -32.9a | -35.45a | -28.07a |
| Net interest income after credit losses | 1,007.34a | 962.68a | 914.11a |
| Non-interest income | — | — | — |
| Trust fees | 214.43a | 190.95a | 184.72a |
| Bank card transaction fees | 189.78a | 191.16a | 176.14a |
| Deposit account charges and other fees | 100.34a | 90.99a | 94.38a |
| Capital market fees | 19.78a | 14.1a | 14.23a |
| Consumer brokerage services | 18.14a | 17.22a | 19.12a |
| Loan fees and sales | 12.89a | 11.17a | 13.14a |
| Other | 60.2a | 57.46a | 44.8a |
| Total non-interest income | 615.55a | 573.05a | 546.54a |
| Investment securities gains (losses), net | 7.82a | 14.99a | 20.51a |
| Non-interest expense | — | — | — |
| Salaries and employee benefits | -607.86a | -584.06a | -554.05a |
| Data processing and software | -127.39a | -118.76a | -110.69a |
| Net occupancy | -53.22a | -53.63a | -49.12a |
| Professional and other services | -35.08a | -36.2a | -35.81a |
| Marketing | -22.35a | -24.51a | -23.83a |
| Equipment | -20.62a | -19.55a | -19.36a |
| Supplies and communication | -19.29a | -19.42a | -18.1a |
| Deposit insurance | -16.48a | -33.16a | -10.58a |
| Other | -48.93a | -41.69a | -27.25a |
| Total non-interest expense | -951.23a | -930.98a | -848.78a |
| Income before income taxes | 679.49a | 619.73a | 632.38a |
| Less income taxes | -145.09a | -134.55a | -132.36a |
| Net income | 534.4a | 485.18a | 500.02a |
| Less non-controlling interest expense (income) | 8.07a | 8.12a | 11.62a |
| Net income attributable to Commerce Bancshares, Inc. | 526.33a | 477.06a | 488.4a |