From the dynamic tech scene in Boise to the world-class resort destinations of Sun Valley, Idaho's diverse economy and stunning landscapes make it a key location for business travel. For organizations with employees working in or traveling across Idaho, a clear understanding of per diem rates is vital for managing expenses efficiently.
Per diem, a daily allowance for lodging, meals, and incidental expenses, is the standard method for handling travel reimbursements. This guide provides a detailed look at the federal per diem rates for Idaho, clarifies important state laws, and shows how you can automate the entire process.
Idaho Per Diem Rate
Per diem rates for official travel in Idaho are set by the U.S. General Services Administration (GSA). These federal rates are mandatory for federal employees and serve as a common benchmark for private sector companies looking to create an IRS-compliant reimbursement policy.
For Fiscal Year 2025 (October 1, 2024, to September 30, 2025), key rates are broken down as follows:
Major Tourist and Business Destinations
Idaho's famous resort areas and its capital city have their own designated Non-Standard Area (NSA) rates with significant seasonal shifts.
- Sun Valley / Ketchum (Blaine & Elmore Counties):
- M&IE: $80 per day
- Lodging: Highly seasonal, with a peak winter rate of $300 per night (Dec-Mar) and rates as low as $181 per night in the spring.
- Boise (Ada County):
- M&IE: $86 per day
- Lodging: Seasonal, with a peak summer rate of $191 per night (June-Sep) and a rate of $167 per night for all other months.
- Coeur d'Alene (Kootenai County):
- M&IE: $74 per day
- Lodging: Seasonal, with a peak summer rate of $217 per night (June-Aug) and a rate of $142 per night for all other months.
The first and last day of travel, the M&IE rate is $60.00 for Sun Valley, $64.50 for Boise, and $55.50 for Coeur d'Alene.
Standard CONUS Rate
For any county in Idaho not specifically listed by the GSA—such as Pocatello (Bannock County) or Idaho Falls (Bonneville County)—the standard CONUS rate applies. For FY 2025, this rate is $178 ($110 for lodging and $68 for M&IE).
Idaho Per Diem Rate Calculator
Find the exact per diem allowance for your business trip to Idaho with our easy-to-use calculator. Select the fiscal year, choose your destination, and input your travel dates. The tool will instantly provide the correct lodging and M&IE rates based on the official GSA schedule.