Look up per diem reimbursement rates and mileage deductions for business travel worldwide.

Complete
United States → Gallatin County, Montana, United States
Item Name Destination Amount Conditions
Lodging Big Sky / West Yellowstone/Gardiner, MT 176 USD per night Seasonal from October 1, 2025 – May 31, 2026; GSA non-standard area defined as: Gallatin/Park.
Lodging Big Sky / West Yellowstone/Gardiner, MT 310 USD per night Seasonal from June 1, 2026 – September 30, 2026; GSA non-standard area defined as: Gallatin/Park.
Meals and incidentals Big Sky / West Yellowstone/Gardiner, MT 80 USD per day GSA non-standard area defined as: Gallatin/Park.; On the first and last day of travel, federal travelers receive 75% of the daily M&IE rate.

Source URL:
https://api.gsa.gov/travel/perdiem/v2/rates/conus/lodging/2026
This source provides information on travel rates in the United States.