Idaho Per Diem Rates (FY2026)
Idaho has 3 GSA non-standard per diem areas for FY2026. Everywhere else uses the standard $178/day rate ($110 lodging + $68 M&IE). The most expensive is Sun Valley / Ketchum — up to $300/night lodging in January plus $80/day M&IE.
| Area | M&IE / day | Lodging / night | Peak month |
|---|---|---|---|
| BoiseAda | $86 | $167–$191 | Jun |
| Coeur d'AleneKootenai | $74 | $142–$217 | Jun |
| Sun Valley / KetchumBlaine / Elmore | $80 | $181–$300 | Jan |
| All other Idaho locationsstandard rate | $68 | $110 | flat |
Estimated trip cost
A 4-night business trip to Sun Valley / Ketchum — Idaho's most expensive per diem area — in January totals $1,560: $1,200 lodging (4 nights) + $360 M&IE (5 days, first & last day at 75%). Sun Valley / Ketchum month-by-month rates →
Book within the Idaho lodging cap
Otto finds hotels at or under the GSA lodging cap for your Idaho destination — $110/night at the standard rate, higher in the 3 listed areas — and books them for you.
Idaho per diem FAQ
- What is the per diem rate in Idaho?
- Idaho has 3 GSA non-standard per diem areas with their own rates for FY2026. Everywhere else in Idaho uses the standard CONUS rate of $178 per day: $110 for lodging plus $68 for meals & incidental expenses (M&IE).
- What is the meal reimbursement (M&IE) rate in Idaho?
- Meal reimbursement in Idaho ranges from $68 to $86 per day for FY2026, depending on the area. The first and last day of travel reimburse at 75% of the daily M&IE rate.