By state
Montana per diem rates (FY2026)
Montana has 4 cities with their own GSA rate. Everywhere else in the state uses the standard rate.
Standard rate (everywhere not listed): $110.00 lodging + $68.00 M&IE per day ($51.00 first/last day).
| City / county | Lodging | M&IE |
|---|---|---|
| Big Sky / West Yellowstone/Gardiner · Gallatin/Park | $176.00–$310.00 | $80.00 |
| Helena · Lewis and Clark | $132.00 | $74.00 |
| Kalispell/Whitefish · Flathead | $124.00–$232.00 | $80.00 |
| Missoula · Missoula | $130.00–$195.00 | $74.00 |