Calculators
Free, accurate tools built on the official GSA FY2026 per diem rates and the 2026 IRS mileage rates.
Truck Driver Per Diem Calculator
Calculate the verified IRS transportation-industry per diem for DOT-regulated truck drivers: $80 CONUS or $86 OCONUS, with the 80% deduction applied.
Per Diem Calculator
Calculate the total per diem for a business trip using the official GSA FY2026 lodging and M&IE rates, with the 75% first-and-last-day rule applied automatically.
Mileage Reimbursement Calculator
Work out a mileage reimbursement using the 2026 IRS standard mileage rates — 72.5¢ business before July 1 and 76¢ from July 1, 20.5¢ medical/moving (23.5¢ from July 1) and 14¢ charitable per mile.
Meals & Incidentals (M&IE) Calculator
See the GSA meals & incidental expense (M&IE) per diem for any tier, including the breakfast/lunch/dinner split and the 75% first-and-last travel-day amount.