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How do I estimate my IFTA fuel tax for the quarter?

IFTA tax is worked out state by state: your miles per gallon for the quarter turns each state’s miles into taxable gallons, you subtract the gallons you bought in that state, and multiply what’s left by the state’s rate for the quarter. Add up the states: a positive total is tax owed, a negative one a credit. Type your miles and gallons by state below to estimate it with IFTA, Inc.’s published rates.

Source: IFTA, Inc. (iftach.org) tax rates for Q3 2026, as published; checked and approved by Tovarlo on November 12, 2026.

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IFTA estimate for Q3 2026, built from IFTA, Inc.’s published rates for that quarter. It’s an estimate, not tax advice. Check it before filing; the carrier is responsible for its IFTA return.

Fill in the boxes to see the results.

This calculator runs in your browser. Nothing you type is sent to Tovarlo or saved.

How do I use it?

  1. Pick the quarter and the fuel.
  2. For each state or province you drove in, type the miles you drove there and the gallons you bought there.
  3. Read the estimate: tax or credit by state, and the total.
  4. Check it against your records before you file; the carrier files its own IFTA return.

Questions

Which rates does the estimate use?

IFTA, Inc.’s published tax rates for the quarter you pick, only once Tovarlo has loaded and approved them. A quarter never uses another quarter’s rates.

Is this my IFTA return?

No. It’s an estimate for planning, not tax advice. The carrier is responsible for its IFTA return; check it with your records or your accountant before filing.

Why does my miles per gallon matter?

IFTA taxes the fuel you used in each state, worked out as that state’s miles divided by your miles per gallon for the whole quarter, then credits the fuel tax you already paid at the pump there.

Can Tovarlo do this from my trips?

Yes. In Tovarlo, trip records and the fuel log build the quarterly IFTA worksheet by truck, with a records check, from the same rates.

Estimates for planning, not tax, legal or accounting advice.

Page checked on November 7, 2026.