Abbreviation: IRP
International Registration Plan
A cooperative vehicle registration agreement among U.S. states, D.C., and Canadian provinces that allows commercial vehicles to operate across member jurisdictions under a single apportioned registration plate.
Under IRP, registration fees are apportioned among jurisdictions based on miles operated in each. A carrier registers with their base jurisdiction and receives apportioned plates valid in all member jurisdictions. IRP applies to qualified motor vehicles (over 26,000 lbs GVWR, or 3+ axles) operating in two or more IRP member jurisdictions. Owner-operators with their own authority must obtain IRP registration from their base state.
IRP registration and apportioned plates
A carrier registers their qualified vehicles with their base jurisdiction's IRP office. The carrier reports miles operated in each member jurisdiction during the prior year (estimated for new applicants). Registration fees are apportioned based on the percentage of miles in each jurisdiction. The base jurisdiction issues apportioned plates and cab cards valid in all member jurisdictions — the cab card must be in the vehicle. IRP registration must be renewed annually. Most states require IRP for vehicles over 26,000 lbs GVWR or with 3 or more axles operating across state lines.
IRP and IFTA: separate programs that work together
IRP and IFTA are distinct but complementary. IRP covers registration fees — the legal right to operate on roads in each jurisdiction. IFTA covers fuel taxes — amounts owed for fuel consumed in each jurisdiction. Both are administered through the carrier's base jurisdiction, often by the same state agency. Most carriers that need IRP also need IFTA, and vice versa. Annual IRP renewal and quarterly IFTA filings are the ongoing compliance obligations. Managing both through the same state agency contact simplifies the process.
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.