Quick Answer
IFTA (International Fuel Tax Agreement) is a system that lets interstate carriers report fuel taxes to one base jurisdiction instead of every state. If your qualified vehicle crosses state or provincial lines, you file a quarterly IFTA return reporting miles driven and fuel purchased in each jurisdiction. Returns are due April 30, July 31, October 31, and January 31.
Key Takeaways
- IFTA covers the 48 contiguous U.S. states and 10 Canadian provinces.
- You must file if you run a qualified motor vehicle across jurisdictions.
- Returns are quarterly; miss a deadline and you face penalties and interest.
- Automating mileage and fuel tracking (via ELD/GPS) is the biggest time-saver.
What is IFTA?
IFTA is an agreement among U.S. states and Canadian provinces that simplifies fuel-tax collection for carriers operating in more than one jurisdiction. Instead of filing in every state you drive through, you file one return with your base jurisdiction, which distributes the tax to each state based on your miles there.
Who has to file IFTA?
You generally need IFTA if you operate a qualified motor vehicle across two or more member jurisdictions. A vehicle is qualified if it's used to transport people or property and:
- Has three or more axles, regardless of weight, or
- Has two axles and a gross vehicle weight over 26,000 lbs, or
- Is used in a combination exceeding 26,000 lbs.
Once licensed, you get an IFTA license and two decals per qualified vehicle, renewed annually.
IFTA quarterly deadlines
Quarter | Period | Due date |
|---|---|---|
Q1 | Jan–Mar | April 30 |
Q2 | Apr–Jun | July 31 |
Q3 | Jul–Sep | October 31 |
Q4 | Oct–Dec | January 31 |
If a deadline falls on a weekend or holiday, it typically moves to the next business day — confirm with your base jurisdiction.
How is IFTA tax calculated?
IFTA nets what you owe against what you already paid at the pump, per jurisdiction:
- Total the miles driven in each state/province.
- Total the gallons purchased in each.
- Calculate fuel used per jurisdiction from your fleet's average MPG.
- Apply each jurisdiction's tax rate to find the balance owed or credited.
Because tax is owed where fuel is burned but credited where it's bought, where you fuel up matters — which is why fuel-card strategy and IFTA go hand in hand.
How to make IFTA filing painless
- Automate mileage by jurisdiction. GPS/ELD data assigns each mile to the right state automatically — no manual state-line math.
- Import fuel-card data. Pull purchases in automatically instead of adding up paper receipts.
- Reconcile every quarter, not at the deadline. Clean records as trips happen; don't rebuild routes from memory in filing week.
- Keep an audit trail. Jurisdictions audit a share of filers each year — keep trip and fuel records tidy.
A fuel card that integrates with your logs closes the loop between fuel purchases and IFTA reporting.
Educational only. IFTA specifics vary by base jurisdiction — verify your obligations there.
FAQ
Q: Do owner-operators need IFTA?
A: If you run a qualified vehicle across state lines under your own authority, yes. If you lease onto a carrier, the carrier may handle IFTA — confirm who's responsible in your lease.
Q: What happens if I file IFTA late?
A: Late filing triggers penalties and interest set by your base jurisdiction, and repeated issues can jeopardize your IFTA license.
Q: Does personal conveyance mileage count for IFTA?
A: Generally all distance traveled must be tracked and reported for IFTA/IRP unless a specific exemption applies — including many personal-conveyance miles. Confirm with your base jurisdiction.
