Free Tool IFTA Fuel Tax Calculator
Enter the miles you drove and the fuel you bought in each state. We'll estimate your fleet MPG and the tax you owe or get back for the quarter.
Miles and fuel by state
Diesel rates: 3rd Quarter 2026
State Miles driven Gallons bought Tax rate $/gal Tax due — — — Estimated tax due $0.00 Miles 0 Gallons 0 Fleet MPG —Pick at least one state and enter miles and gallons to see your estimate.
Let us file it for you
We prepare and file your quarterly IFTA return and keep your mileage records in order.
IFTA filing service888-700-5704This is an estimate for diesel in the 48 U.S. IFTA states. It does not include interest, penalties, non-taxable miles or Canadian provinces. Rates come from the IFTA tax rate matrix and change every quarter; you can edit any rate above.