Free calculator

IFTA Fuel Tax Calculator

Estimate quarterly IFTA tax due or credit by jurisdiction using the current verified matrix.

Enter operating details

QuarterFuel type

Rates effective 2026-07-01 through 2026-09-30. Enter tax-paid US gallons.

Jurisdiction 1JurisdictionMiles traveledTax-paid gallons

Jurisdiction 2JurisdictionMiles traveledTax-paid gallons

Planning result

Enter valid values, then calculate.

Detail: -

Planning boundary: Estimated tax liability or credit only. Reconcile against the base-jurisdiction return, current matrix notes, exemptions, amendments, penalties, interest, and required rounding before filing.