RANKING ·
Highest net interest margin in Montana
30 of 35 banks in Montana that filed for the quarter ended June 30, 2026 are ranked. At least $100 million in total assets. Institutions with equal values share a rank. Source: FDIC quarterly financial data.
| Rank | Institution | Headquarters | Net interest margin | Total assets |
|---|---|---|---|---|
| 1 | Freedom Bank | Columbia Falls, MT | 5.93% | $157 million |
| 2 | Three Rivers Bank of Montana | Kalispell, MT | 5.38% | $293 million |
| 3 | Eagle Bank | Polson, MT | 5.22% | $180 million |
| 4 | Bank of the Rockies | Helena, MT | 5.07% | $277 million |
| 5 | Ascent Bank | Helena, MT | 4.81% | $104 million |
| 6 | Independence Bank | Havre, MT | 4.68% | $1.4 billion |
| 7 | Valley Bank of Ronan | Ronan, MT | 4.53% | $218 million |
| 8 | Valley Bank of Kalispell | Kalispell, MT | 4.52% | $218 million |
| 9 | Opportunity Bank of Montana | Helena, MT | 4.37% | $2.1 billion |
| 10 | The Yellowstone Bank | Laurel, MT | 4.34% | $1.3 billion |
| 11 | The Bank of Baker | Baker, MT | 4.31% | $161 million |
| 12 | Little Horn State Bank | Hardin, MT | 4.30% | $413 million |
| 13 | Bank of Bozeman | Bozeman, MT | 4.28% | $108 million |
| 14 | Farmers State Bank | Victor, MT | 4.22% | $790 million |
| 15 | American Bank | Bozeman, MT | 4.21% | $630 million |
| 16 | Garfield County Bank | Jordan, MT | 4.13% | $108 million |
| 17 | Citizens Bank & Trust Company | Big Timber, MT | 4.12% | $155 million |
| 18 | Trailwest Bank | Lolo, MT | 4.10% | $1.1 billion |
| 19 | Manhattan Bank | Manhattan, MT | 4.02% | $287 million |
| 20 | First State Bank of Forsyth | Forsyth, MT | 4.02% | $166 million |
| 21 | Glacier Bank | Kalispell, MT | 3.98% | $31.6 billion |
| 22 | Stockman Bank of Montana | Miles City, MT | 3.96% | $7.7 billion |
| 23 | First Montana Bank Inc. | Missoula, MT | 3.73% | $530 million |
| 24 | Madison Valley Bank | Ennis, MT | 3.72% | $264 million |
| 25 | First Interstate Bank | Billings, MT | 3.60% | $25.8 billion |
| 26 | Bank of Montana | Missoula, MT | 3.55% | $309 million |
| 27 | Bank of Bridger N.A. | Bridger, MT | 3.30% | $803 million |
| 28 | Pioneer Federal Savings & Loan Association | Deer Lodge, MT | 3.19% | $134 million |
| 29 | The First State Bank of Malta | Malta, MT | 3.02% | $190 million |
| 30 | The First State Bank of Shelby | Shelby, MT | 2.45% | $176 million |
Rankings sort one published measure; they are not an overall judgment of any institution. Methodology · All rankings