Gsa Per Diem 2025 Rates By State. Typically, gsa calculates per diem rates based on the average daily rate (adr) data from str/costar from the previous fiscal year from selected hotel properties, less five percent. The per diem rates shown on this page are averages of all of the individual per diem rates within each state as of 2025.
The general services administration (gsa) has released new rates for reimbursement of privately owned vehicle (pov) mileage for 2025. Per diem rates gsa establishes the rates that federal agencies use to reimburse their employees for lodging and meals and incidental expenses incurred while on official travel.
