First Interstate Bank: how it compares with its peers
Against 88 U.S. banks with half to twice its assets, First Interstate Bank's strongest measure in Q2 2026 is return on assets (1.21% vs. a 1.22% peer median). Its weakest relative measure is assets per employee ($8.6M vs. $12.6M).
| Measure | First Interstate Bank | Peer median | Rank |
|---|---|---|---|
| Return on assets Annualized net income over average assets. | 1.21% | 1.22% | Middle third Ahead of 49% of peers |
| Net interest margin Annualized net interest income over earning assets. | 3.55% | 3.61% | Middle third Ahead of 47% of peers |
| Efficiency ratio Noninterest expense per dollar of revenue. Lower is better. | 58.39% | 54.45% | Bottom third Ahead of 28% of peers |
| Assets per employee Total assets over full-time-equivalent staff. | $8.6M | $12.6M | Bottom third Ahead of 15% of peers |
| Loans to deposits Net loans and leases over total deposits. | 64.88% | 85.89% | Context |
What it means for lending operations
Its efficiency ratio of 58.39% is above the 54.45% peer median: it spends more to earn each dollar of revenue than most banks its size. Staff time on manual borrower verification (collecting pay stubs, bank statements, and employment letters, then re-keying them) is one of the larger controllable costs behind that number.
Banks closest in size
- Provident Bank Jersey City, NJ · $25.65B
- Ameriprise Bank, FSB Minneapolis, MN · $25.48B
- Customers Bank Malvern, PA · $26.50B
- Charles Schwab Premier Bank, SSB Westlake, TX · $26.58B
- Rockland Trust Company Rockland, MA · $24.97B
- Simmons Bank Pine Bluff, AR · $24.73B
Questions about First Interstate Bank
How big is First Interstate Bank?
First Interstate Bank, established in 1916, is headquartered in Billings, MT. It reported $25.79B in total assets in its Q2 2026 FDIC call report and operates 274 offices.
What is First Interstate Bank's return on assets?
1.21% annualized in Q2 2026, against a 1.22% median for 88 U.S. banks with half to twice its assets, ahead of 49% of them.
What is First Interstate Bank's efficiency ratio?
58.39% in Q2 2026: it spent about 58 cents in noninterest expense for each dollar of revenue. The peer median is 54.45%, and lower is better.
Is First Interstate Bank growing its loans?
Net loans shrank 14.4% over the year to Q2 2026, while deposits shrank 5.6%.
Sources and method
Figures are from the FDIC’s public call report data for the quarter ending 06/30/2026, via FDIC BankFind. Return on assets and net interest margin are annualized year to date. Peers are U.S. banks with half to twice its assets in the same quarter, excluding this bank. The page refreshes daily, so new quarters appear as banks file. Compare another bank or see every Montana bank ranked.