IRP Registration: How Apportioned Plates Work for Trucking
If you drive a commercial vehicle across state lines, you need apportioned plates through the International Registration Plan. Here's how it works, what it costs, and how to avoid common mistakes.
What Is IRP?
The International Registration Plan (IRP) is a registration agreement between the 48 contiguous US states, the District of Columbia, and 10 Canadian provinces. It allows you to register a commercial vehicle in your base jurisdiction and legally operate it in all other member jurisdictions with a single set of plates — called apportioned plates.
Without IRP, you'd need to buy separate registration plates in every state you drive through. IRP simplifies this by letting you pay one registration fee that gets divided among the states based on the miles you drive in each one.
Who Needs IRP?
You need IRP registration if your vehicle meets both of these criteria:
- Has a gross vehicle weight or registered gross vehicle weight exceeding 26,000 lbs, OR has 3 or more axles regardless of weight, OR is used in a combination that exceeds 26,000 lbs
- Travels in two or more IRP member jurisdictions
If your truck only operates within one state, you don't need IRP — standard state registration is sufficient. Recreational vehicles, city pick-up and delivery vehicles, government vehicles, and buses used for personal transportation are also exempt.
How IRP Fees Are Calculated
IRP fees are apportioned based on the percentage of miles you drive in each jurisdiction. Here's a simplified example:
Example: You drive 100,000 miles total per year
Each state has its own registration fee schedule based on vehicle weight. Your total IRP cost is the sum of each state's fee multiplied by your mileage percentage in that state.
For new carriers without mileage history, you'll estimate your first-year mileage by state. After the first year, you report actual miles driven, and your fees are adjusted accordingly at renewal.
What It Costs
IRP registration costs vary widely based on three factors: the number of jurisdictions you operate in, your vehicle's gross weight, and each state's registration fee schedule.
States with higher registration fees (like New York, Illinois, and Pennsylvania) increase your total IRP cost significantly if you drive substantial miles there.
How to Apply for IRP
Apply through your base jurisdiction's IRP office. You'll need:
- USDOT number
- Proof of vehicle ownership (title or lease agreement)
- Proof of insurance
- Vehicle identification number (VIN)
- Estimated or actual mileage by jurisdiction
- HVUT Form 2290 stamped receipt (for vehicles over 55,000 lbs)
- EIN or Social Security Number
Processing time varies by state — some process same-day, others take 1–3 weeks. Many states now offer online IRP applications. You'll receive your apportioned plates, a cab card listing all jurisdictions you're registered in, and a weight sticker for your vehicle.
IRP vs. Trip Permits
If you only occasionally travel to a state that's not on your IRP registration, you can buy a temporary trip permit instead of adding that state to your IRP. Trip permits typically cost $15–$50 per state for 72 hours.
Trip permits make sense for occasional or one-time trips. If you regularly operate in a state, it's cheaper to add it to your IRP registration. The break-even point is usually 3–5 trips per year — beyond that, IRP is more cost-effective.
Renewal and Mileage Reporting
IRP registration renews annually. At renewal, you report your actual miles driven in each jurisdiction during the reporting period (July 1 to June 30 of the prior year for 2026 renewals). Your fees for the next year are calculated based on these actual miles.
If your mileage patterns change — say you pick up a new lane that takes you through 3 states you weren't previously registered in — you can add jurisdictions to your IRP mid-year. This is called a supplemental application.
Keep your cab card in the truck at all times
Your cab card is proof of registration in each jurisdiction. If you're stopped at a weigh station or roadside inspection and can't produce your cab card, you can be fined and required to purchase trip permits on the spot. Many states now accept electronic cab cards on your phone or ELD, but check your state's rules.
Common IRP Mistakes
Underestimating mileage in high-fee states
If you underreport miles in a state, you'll owe the difference at renewal — plus potential penalties. It's better to slightly overestimate than underestimate.
Forgetting to add new jurisdictions
If you start running a lane through a state that's not on your IRP, you're operating without registration in that state. This can result in fines and out-of-service orders.
Not tracking mileage properly
IRP requires accurate mileage records by jurisdiction. GPS/ELD data is the best source. If you use estimates, make sure they're reasonable and defensible in case of an audit.
Missing the renewal deadline
Operating with expired IRP registration is the same as operating without registration. Renew early — most states allow renewal 60-90 days before expiration.
IRP and IFTA: They Go Together
IRP handles registration (where you can legally drive). IFTA handles fuel tax (what you owe for driving there). Both require state-by-state mileage tracking, so the same GPS or ELD data feeds both. If you're tracking mileage for one, you're already doing the work for the other.
PermitIQ tracks your mileage by state and uses it for both IFTA returns and IRP renewal reporting. One data source, two compliance requirements handled.