Free IFTA Calculator — Reconcile Your Quarterly Fuel Tax in Minutes

1 · Your quarter & fuel

IFTA is filed quarterly. The quarter due July 31, 2026 is Q2 2026 (Apr–Jun).

Filing quarter

Fuel type

2 · Miles & gallons by jurisdiction

Add each state/province you drove in. Enter total miles driven there and total fuel gallons purchased there.

Add a jurisdiction

Jurisdiction	Miles	Gallons purchased
No jurisdictions added yet. Pick one above and hit “Add”.

3 · Your reconciliation

Total miles

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Total gallons

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Fleet MPG

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Jurisdiction	Taxable gal	Tax-paid gal	Net taxable	Rate	Tax / (credit)

This is a reconciliation worksheet, not a filed return, and not tax or legal advice. Figures are estimates to help you check your numbers — transcribe them into your base jurisdiction’s official IFTA return to file. Always verify current rates at iftach.org. IFTA rules require actual recorded mileage (no estimates) and retained fuel receipts.

Get this worksheet + a heads-up before each deadline

We’ll email you the filled summary and a reminder 2 weeks before each IFTA due date. No spam.