Abbreviation: IFTA
International Fuel Tax Agreement
A cooperative agreement among U.S. states and Canadian provinces simplifying fuel tax reporting for carriers operating in multiple jurisdictions.
Under IFTA, a carrier files a single quarterly fuel tax return with their base jurisdiction, which then distributes taxes to other jurisdictions based on miles driven there. Required for qualified motor vehicles with a GVWR over 26,000 lbs or with 3 or more axles. Owner-operators with their own authority typically need an IFTA license from their base state.
IFTA filing and record-keeping requirements
IFTA licensees file quarterly returns — due April 30, July 31, October 31, and January 31 — with their base jurisdiction. The return reports miles traveled and fuel purchased in each IFTA member jurisdiction. The return calculates net tax owed or refunded based on the difference between fuel purchased and fuel consumed per jurisdiction. Records supporting each return must be kept for 4 years: mileage records by vehicle and jurisdiction, fuel receipts with date and location, and trip reports or GPS data.
IFTA for owner-operators with their own authority
An owner-operator with their own USDOT authority who operates a qualified motor vehicle across state lines must obtain an IFTA license from their base state — the state where the vehicle is registered or the owner-operator has their principal place of business. IFTA decals (two per vehicle) must be displayed. Owner-operators who drive under a carrier lease where the carrier provides IFTA credentials are responsible for ensuring those credentials are in the cab. Operating without valid IFTA credentials in a member jurisdiction is a violation subject to fines at weigh stations.
Last updated: May 29, 2026
When this definition matters
This term usually matters when a driver, owner-operator, or small carrier is deciding whether a federal rule applies, preparing a compliance file, or checking a state CDL step. Use this definition as a starting point, then confirm the controlling requirement in the official source listed below before making a licensing, hiring, dispatch, or recordkeeping decision.
The related terms above are included because they often appear in the same compliance workflow. Reviewing them together can prevent common mix-ups, such as treating a state licensing step as a federal carrier obligation or confusing a driver record with a separate employer record.