How IFTA is calculated
Fleet MPG = total miles ÷ total gallons Taxable gallons = state miles ÷ fleet MPG Tax due (state) = (taxable gallons − gallons bought there) × state rate Net due = sum of all states
Filing deadlines
| Quarter | Due |
|---|---|
| Q1 (Jan–Mar) | April 30 |
| Q2 (Apr–Jun) | July 31 |
| Q3 (Jul–Sep) | October 31 |
| Q4 (Oct–Dec) | January 31 |
Current rates: IFTA, Inc. tax rate matrix. Estimates only.
Common questions
Who needs IFTA?
Qualified motor vehicles over 26,000 lbs (or with three or more axles) that travel in two or more IFTA jurisdictions.
Why do I owe a state where I didn't buy fuel?
IFTA taxes fuel by where it was burned. If you drove there but fueled elsewhere, you owe that state's tax on those gallons.
What records do I need?
Miles by state from your ELD or trip sheets, and every fuel receipt with gallons, date and location.