IRP vs IFTA: What's the Difference?

Learn how to improve your fleet’s CSA score with proven strategies, fewer violations, stronger compliance practices, and better overall DOT performance.

1. Incorrect IRP Apportionment and Base Jurisdiction Registration Many carriers improperly register equipment under the wrong base jurisdiction or fail to correctly report mileage under the International Registration Plan (IRP). Common Problems: Underreporting miles in certain states Using an improper established place of business Failing to maintain operational records Registering fleets in “friendly” states without meeting requirements Consequences: IRP audits Back taxes and registration fees Penalties and interest Suspension of apportioned plates This issue becomes especially problematic during mergers, rapid growth, or owner-operator onboarding. 2. Titling Equipment in the Wrong Legal Entity Motor carriers frequently title tractors, trailers, or other equipment in: the owner’s personal name, an affiliated company, or a different operating entity than the one using the equipment. Why This Happens: Financing requirements Poor coordination between accounting and operations Corporate restructuring Leasing arrangements Risks: Sales/use tax exposure Difficulty proving ownership Insurance complications Problems during audits or DOT investigations Challenges claiming depreciation or tax credits This becomes critical when dealing with multi-entity fleet structures. 3. Failure to Properly Handle Lease-Purchase and Owner-Operator Registrations Lease-purchase programs create major compliance problems when: titles remain with the carrier, registrations are improperly assigned, or responsibility for taxes and fees is unclear. Frequent Errors: Wrong party listed as registrant Improper HVUT filings Missing lease documentation Incorrect IFTA/IRP responsibility assignments Result: Disputes during audits can lead to double taxation, penalties, or operational shutdowns. 4. Improper Handling of Sales and Use Tax on Equipment Purchases Many carriers assume: purchasing equipment out of state avoids tax, temporary permits eliminate liability, or reciprocal agreements fully exempt them. Typical Mistakes: Not paying use tax when equipment enters another state Failing to document interstate exemptions Misapplying rolling stock exemptions Poor recordkeeping for trailers and leased equipment Exposure: States aggressively audit heavy equipment purchases because tractors and trailers are high-value assets. A single mistake on fleet acquisitions can create six-figure assessments. 5. Letting Registrations, HVUT, or Compliance Filings Lapse Operational teams often focus heavily on dispatch and safety while administrative compliance falls behind. Common Lapses: Expired apportioned plates Missing Internal Revenue Service Form 2290 Heavy Vehicle Use Tax filings Incorrect VIN updates Expired trailer registrations Missing Unified Carrier Registration renewals Consequences: Roadside violations Vehicle impoundment Out-of-service orders Delays in plate renewals Increased audit scrutiny Even a minor lapse can sideline revenue-generating equipment. Additional High-Risk Areas Other recurring problem areas include: Incorrect VIN reporting Trailer fleet inventory inaccuracies Failure to transfer titles after acquisitions Misclassification of leased vs. owned assets Poor coordination between accounting, licensing, and operations teams Inadequate document retention during IRP/IFTA audits Best Practices for Carriers  Top-performing carriers usually: Centralize fleet compliance management Conduct annual IRP/IFTA self-audits Reconcile VINs across accounting, registration, and insurance systems Review entity ownership before purchases Maintain detailed mileage and equipment records Coordinate tax, legal, and operations departments before acquisitions or restructuring For large fleets, preventive compliance is far less expensive than correcting registration and tax problems after an audit.