Before IFTA, an interstate carrier bought fuel permits and filed fuel-tax paperwork in every state it crossed. The agreement replaced that with the base-jurisdiction model: one license, one quarterly return, and your home jurisdiction distributes the tax to everyone else and audits on their behalf.
The rules below come from the IFTA Articles of Agreement itself — including the axle interpretation that trips up half the industry.
Who needs an IFTA license
The Agreement requires licensing for any person based in a member jurisdiction operating qualified motor vehicles in two or more member jurisdictions. A qualified motor vehicle is one used, designed, or maintained to transport persons or property that has two axles and a gross or registered weight exceeding 26,000 pounds; or three or more axles regardless of weight; or is used in a combination exceeding 26,000 pounds. Recreational vehicles are excluded.
The interpretation that matters: the three-axle test counts the power unit only. The IFTA board is explicit that a two-axle tractor pulling a trailer, with a combined weight of 26,000 pounds or less, is not a qualified motor vehicle — trailer axles never make a light combination qualify.
How the base-jurisdiction model works
Your base jurisdiction — where the vehicles are registered and where operational control and records are maintained — issues the license and decals, provides the quarterly return and rate tables, collects your payment, distributes each jurisdiction’s share, and audits for everyone. IFTA, Inc. itself issues nothing; all credentials and returns run through your state or province.
Occasional interstate trips have an alternative: in lieu of licensing, fuel-trip permits satisfy the obligation trip by trip — the standard choice for a carrier making one out-of-state run a year.
Decals, the license copy, and the grace period
Each qualified vehicle gets a minimum of two decals, placed on the exterior of both sides of the cab, and a copy of the license (paper or electronic image, producible on request) must be in the vehicle. The license runs the calendar year, with a published two-month grace period — January and February — to display the renewal license and decals.
The four deadlines: April 30 (Q1), July 31 (Q2), October 31 (Q3), January 31 (Q4) — the last day of the month after each quarter, rolling to the next business day when it lands on a weekend or holiday. A return is due every quarter, operations or not, and the Agreement’s penalty is $50 or 10% of delinquent taxes, whichever is greater, with base jurisdictions free to add their own.
IFTA vs. IRP vs. the 2290
IFTA and IRP share identical vehicle thresholds and the base-jurisdiction concept, which is why states bundle their offices — but they are separate programs: IFTA settles fuel tax by where you burned it; IRP apportions registration fees by where you drove. And neither touches the federal Heavy Vehicle Use Tax: at 55,000 pounds or more taxable gross weight, Form 2290 goes to the IRS annually, and the stamped Schedule 1 is what your registration office demands — a third system with its own threshold and its own calendar.
Frequently asked questions
What vehicles qualify for IFTA?⌄
When are IFTA returns due?⌄
How many IFTA stickers does each truck need?⌄
What is the penalty for a late IFTA return?⌄
Related guides
More in Carrier Credentials & Federal Compliance
Official sources
- IFTA, Inc. — carrier information
- IFTA Articles of Agreement (official 2026 text)
- IFTA, Inc. — home (credentials come from your base jurisdiction)
- IRS Trucking Tax Center (the separate federal HVUT)
Agency rules, fees and contacts can change — confirm current requirements with the agency before acting. This guide is general information for truckers, not tax or legal advice.