IFTA / IRP

IFTA (International Fuel Tax Agreement) and IRP (International Registration Plan) are companion compliance programs for carriers that cross state lines. IFTA lets a qualifying interstate truck report and pay fuel taxes for all member jurisdictions through one quarterly return filed with its base state, which then apportions the tax to the states where fuel was actually burned. IRP does the same for vehicle registration, issuing an apportioned plate so a carrier registers once and pays each state a share of fees based on miles traveled there. Both are tied to interstate operations and generally apply to vehicles over 26,000 lbs GVWR or with three or more axles.

These programs are not insurance, but they sit alongside the insurance and authority requirements every interstate carrier must satisfy, together with a USDOT number and, for for-hire carriers, MC operating authority. For a small trucking business they matter because failing to keep IFTA and IRP current can put the truck out of service just as surely as a lapsed policy, and roadside enforcement checks credentials together. Accurate mileage-by-state records are the backbone of both filings, and those same records help substantiate the radius and mileage figures an insurer relies on to rate the policy.

A practical nuance is recordkeeping and audit exposure. IFTA and IRP both require detailed, jurisdiction-by-jurisdiction distance and fuel records, and states audit these filings; sloppy logs can produce assessments and penalties. Because electronic logging and GPS systems now capture mileage automatically, many carriers use that same data to feed IFTA/IRP reporting and to demonstrate compliance during an insurance premium audit. New authority holders should set up mileage tracking before their first interstate trip and coordinate registration renewals, since keeping IFTA, IRP, insurance filings, and unified carrier registration aligned is what keeps trucks legally on the road.