What Is IFTA (International Fuel Tax Agreement) in Trucking?
Also called: International Fuel Tax Agreement, IFTA License
IFTA is the International Fuel Tax Agreement. It lets a truck that runs in many states file one fuel tax return. You file with your home (base) state, and it shares the tax with the other states you drove in. Most interstate trucks over 26,000 pounds need an IFTA license.
Last reviewed September 23, 2026 · Facts checked October 15, 2026
Key Points
- A qualified motor vehicle has two axles and a gross or registered weight over 26,000 pounds, or three or more axles at any weight, or is used in a combination over 26,000 pounds. The axle test counts the power unit's axles
- You file one return each quarter with your base jurisdiction
- The return and full payment are due on the last day of the month after the quarter ends: April 30, July 31, October 31 and January 31. If that day is a Saturday, Sunday or legal holiday, the next business day is the due date
- You must file even if you did not drive in that quarter
- The tax depends on the miles you drove and the fuel you bought in each state, so you may owe tax or get a credit
- Your base jurisdiction issues your IFTA license and decals
IFTA vs. IRP
| IFTA | IRP | |
|---|---|---|
| What it covers | Fuel tax across states | Registration fees across states |
| Who needs it | Qualified vehicles that run in two or more member jurisdictions | Qualified vehicles that run in two or more member jurisdictions |
| What you get | An IFTA license and decals | Apportioned plates and a cab card |
| What you file | A fuel tax return every quarter | A registration application, usually renewed each year |
| What it is based on | Miles driven and fuel bought in each jurisdiction | Miles driven in each jurisdiction and registered weight |
| Who handles it | Your base jurisdiction | Your base jurisdiction |
Who needs an IFTA license?
IFTA is for qualified motor vehicles that travel in two or more member jurisdictions (the U.S. states and Canadian provinces that joined). A vehicle is qualified if it meets one of three tests. It has two axles and a gross or registered weight over 26,000 pounds. Or it has three or more axles, no matter the weight. Or it is used in a combination whose weight is over 26,000 pounds. Recreational vehicles are not qualified motor vehicles. If you only drive inside one state, IFTA usually does not apply to you.
What is a base jurisdiction?
Your base jurisdiction is the member state or province where your qualified trucks are registered, where your records are kept or can be shown, and where some of your fleet's travel takes place. It is the one place you file your IFTA return and pay what you owe. It also issues your IFTA license and decals.
When are IFTA returns due?
Returns are filed every quarter. The general rule is that the return and full payment are due on the last day of the month after the quarter ends. That makes the dates April 30 for January through March, July 31 for April through June, October 31 for July through September and January 31 for October through December. A carrier with fewer than 5,000 miles in all member jurisdictions other than its base jurisdiction over 12 months may ask its base jurisdiction for approval to file once a year, due January 31. Example: October 31, 2026 is a Saturday, so the third-quarter 2026 return is due Monday, November 2, 2026. Your base jurisdiction may post its own calendar, so confirm the dates with them. Keep your fuel receipts and mileage records for every state.
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Frequently Asked Questions
What is IFTA in trucking?+
IFTA stands for the International Fuel Tax Agreement. It lets a truck that runs in several states file one fuel tax return with its base state, instead of a separate return in every state.
Do I need IFTA if I only drive in one state?+
Usually not. IFTA is for qualified vehicles that travel in two or more member jurisdictions. If your truck stays in one state, ask your state tax office what applies to you.
How often do I file IFTA?+
Every quarter, even if you did not drive. Returns are due April 30, July 31, October 31 and January 31, or the next business day if that date is a weekend or legal holiday. A carrier with fewer than 5,000 miles outside its base jurisdiction in 12 months can ask to file once a year. Check with your base jurisdiction.
What is the IFTA tax rate?+
Each state or province sets its own rate, and rates change. IFTA, Inc. publishes a rate chart every quarter. Use the current quarter's rates when you file. Our IFTA tax calculator can help you estimate what you owe.
What counts as a qualified vehicle for IFTA?+
IFTA's Articles of Agreement (R245) say a qualified motor vehicle is used, designed or maintained to carry people or property, and has two axles with a gross or registered weight over 26,000 pounds, or three or more axles at any weight, or is used in a combination whose weight is over 26,000 pounds. Recreational vehicles are not qualified motor vehicles.
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This is industry terminology and typical practice. It is not legal or tax advice. Rates, fees, and rules mentioned are general ranges. Confirm the details on your rate confirmation, carrier agreement, or a current official source.