Per Diem AtlasU.S. per diem rate directory

Independent reference using GSA dataFY2026 & FY2027 · Contiguous United States

Privately owned vehicle

Mileage reimbursement calculator

Enter each official drive with its date and miles. Every line uses the GSA rate in effect on that date, so trips before and after the July 1, 2026 increase are priced correctly. Automobile lines also show the IRS business standard mileage rate.

Statute miles, up to one decimal place. GSA and IRS rates are included from Jan 1, 2017 through Dec 31, 2026; 2027 rates have not been published. Airplane distances in nautical miles must first be multiplied by 1.15077945.