IFTA (International Fuel Tax Agreement)
IFTA is an agreement among U.S. states and Canadian provinces that lets interstate truckers file a single quarterly fuel tax return in their base state instead of filing separately in every state they drove through.
What you actually need to know
You apply for IFTA in your base state (where your business is registered and your truck is plated). Your base state issues you an IFTA license and decals you display on the truck. Then every quarter, you report how many miles you drove in each state and how many gallons you bought there.
The state reconciles what you owe versus what you paid in fuel taxes, and either bills you or refunds you the difference. Quarterly returns are due April 30, July 31, October 31, and January 31.
You need IFTA if you operate a qualified motor vehicle (over 26,000 lbs GVWR or 3+ axles regardless of weight) in two or more IFTA member jurisdictions. Almost every owner-operator hauling interstate qualifies.
Common mistakes / confusions
- IFTA is a tax reporting system, not a tax. You're still paying fuel tax at the pump; IFTA just reconciles where it goes.
- Skipping IFTA returns (even zero-mile quarters) leads to license suspension. File every quarter even if you didn't drive.
- ELD logs and fuel receipts are your audit trail. Lose them and you're stuck paying based on the state's estimate.
Related terms
Where to go next
TruckStart is an educational tool, not a law firm, accounting firm, insurance agency, freight broker, or filing service. Always verify current requirements directly with FMCSA, your state, the IRS, and qualified professionals before making business decisions.