What is IRP?
IRP (International Registration Plan) is a registration agreement among US states and Canadian provinces that allows commercial motor vehicles to travel interstate by paying registration fees proportional to the miles driven in each jurisdiction. Instead of buying a separate registration in every state you travel through, IRP lets you pay one apportioned fee based on your actual mileage distribution.
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O TruckingWhat is IRP? International Registration Plan Explained
IRP Explained
Before IRP existed, a commercial truck that traveled through 15 states would need to purchase a separate registration in each one — an expensive and logistically impossible requirement. The International Registration Plan solved this by creating a system where carriers register in their home (base) state and pay a proportional share of each state's registration fee based on the percentage of miles driven there.
The IRP is an agreement among all 48 continental US states, the District of Columbia, and 10 Canadian provinces — 59 member jurisdictions in total. When you register under IRP, you receive apportioned plates (also called "apportioned tags" or "prorate plates") that are recognized in all member jurisdictions. You also receive a cab card that documents your registration in each jurisdiction.
IRP registration is separate from your DOT number, MC authority, and IFTA license. You need all of these to operate a commercial trucking operation legally across state lines.
Quick Facts: IRP Registration
Cost
$500-$3,000+ annually (varies by routes)
Coverage
48 US states, D.C., 10 Canadian provinces
Fee Basis
Proportional to miles in each jurisdiction
Threshold
26,001+ lbs GVW or 3+ axles
Who Needs IRP Registration?
IRP registration is required for power units (trucks and tractors) that travel in two or more member jurisdictions and meet any of these criteria:
Two Axles, Over 26,000 lbs
Any power unit with two axles that has a gross vehicle weight (GVW) or registered gross vehicle weight (RGVW) exceeding 26,000 lbs. This covers most Class 7 and Class 8 trucks used in interstate commerce.
Three or More Axles (Any Weight)
Any power unit with three or more axles, regardless of weight. This captures most tractor units used in tractor-trailer combinations.
Combination Vehicles Over 26,000 lbs
Any power unit used in combination with a trailer where the combined weight exceeds 26,000 lbs. This includes hotshot rigs pulling heavy trailers across state lines.
Who Does NOT Need IRP?
Intrastate-only vehicles — Trucks that never leave their base state can use standard state registration
Recreational vehicles — Personal use vehicles, even large ones, are exempt from IRP
Government vehicles — Federal, state, and local government-owned vehicles are exempt
Buses used for personal transport — Church buses and similar non-commercial passenger vehicles
How IRP Fees Are Calculated
IRP fees are apportioned — meaning you pay each jurisdiction a share of their registration fee based on the percentage of your total miles driven there. The formula is:
IRP Fee Formula
Fee = (Miles in Jurisdiction ÷ Total Miles) × Jurisdiction's Full Registration Fee
Example Calculation:
Total annual miles: 100,000
Miles in Texas: 30,000 (30%)
Texas full registration fee: $1,200
Your Texas IRP fee: 30% × $1,200 = $360
This calculation is repeated for every jurisdiction where you drive miles. The sum of all jurisdictional fees equals your total IRP registration cost. First-year registrants use estimated mileage; subsequent renewals use actual reported mileage from the previous year.
For detailed fee calculation examples and a breakdown of how different routes affect your costs, see our IRP fees calculator guide.
Track Your Miles by State
Choosing Your Base Jurisdiction
Your base jurisdiction is the state (or province) where you register your IRP account. This is typically determined by where:
Your vehicles are dispatched from or controlled from
Your operational records are maintained or can be made available
Your vehicles accrue mileage — you must drive at least some miles in your base state
You cannot simply pick the cheapest state as your base jurisdiction. IRP requires a legitimate business connection to your base state. If you register in a state where you have no physical presence or operations, you risk having your registration denied or revoked.
Base State Affects Your Plates
Cab Cards Explained
The cab card is your proof of IRP registration. It is a document (paper or digital in some states) that must be carried in the vehicle at all times. Here is what it contains:
Information on Your Cab Card
Registrant name and address
USDOT number
Vehicle identification (VIN, year, make)
Plate number
Registration expiration date
List of registered jurisdictions
Gross vehicle weight per jurisdiction
Fleet number and unit number
For a complete guide on reading cab cards, replacing lost ones, and digital cab card options, see our IRP cab card guide.
IRP Registration Process
IRP registration is handled through your base state's motor vehicle department or IRP office. The process varies slightly by state but generally follows these steps:
Establish Your Base Jurisdiction
Determine which state qualifies as your base based on where you dispatch, maintain records, and accrue miles.
Gather Required Documents
Vehicle titles, proof of insurance, USDOT number, EIN, and proof of HVUT payment (Form 2290). Each vehicle needs its own documentation.
Submit Application and Mileage
Apply through your state's IRP office. Report estimated mileage by jurisdiction (first year) or actual mileage (renewals). Fees are calculated based on this mileage distribution.
Pay Fees and Receive Plates/Cab Card
After fee calculation, pay the total apportioned amount. Your base state issues your apportioned plates and cab card. Processing typically takes 2-4 weeks.
For the complete registration walkthrough with state-specific tips, see our IRP registration guide.
IRP vs IFTA: Two Sides of the Same Coin
IRP and IFTA are frequently confused because they both use mileage-based apportionment across states. However, they cover completely different obligations:
| Feature | IRP | IFTA |
|---|---|---|
| Purpose | Vehicle registration fees | Fuel taxes |
| Fee Basis | Miles driven per state | Fuel consumed per state |
| Filing | Annual registration | Quarterly tax returns |
| Proof Required | Cab card in vehicle | IFTA decals on vehicle |
| Base State | Where you dispatch from | Where you are based |
For a complete side-by-side comparison, see our IRP vs IFTA guide.
You Need Both IRP and IFTA
How Our Team Handles IRP Compliance
IRP compliance directly affects whether your truck can legally operate across state lines. Here is how O Trucking LLC approaches it:
We verify registration before dispatch
Before routing a carrier through any jurisdiction, we confirm their IRP registration covers that state. Running loads through states not listed on your cab card can result in being placed out of service at weigh stations — we help prevent that.
Renewal tracking and reminders
IRP renewals are due annually and the application process takes weeks. We track expiration dates for the carriers we dispatch and remind them well before renewal deadlines to prevent any gap in registration that could sideline their truck.
Route planning that matches registration
We plan loads based on the jurisdictions listed on your cab card. If you need to add a new state, we help you understand the supplemental application process and temporary permit options so you can accept loads in new territories without compliance risk.
IRP Registration FAQ
Common questions about the International Registration Plan
Who needs IRP registration?
IRP registration is required for any power unit (truck or tractor) used in interstate commerce that has two axles and a gross vehicle weight or registered gross vehicle weight exceeding 26,000 lbs, or has three or more axles regardless of weight, or is used in combination when the combined weight exceeds 26,000 lbs. Vehicles that only operate within their base state (intrastate) can register with a standard base plate instead.
How are IRP fees calculated?
IRP fees are calculated based on the percentage of miles you drive in each jurisdiction. The formula is: miles in a jurisdiction divided by total miles in all jurisdictions, multiplied by that jurisdiction's registration fee. For example, if you drive 30% of your miles in Texas and Texas charges $1,000 for full registration, your Texas portion would be $300. First-year registrants use estimated mileage; renewals use actual mileage from the previous year.
What is a cab card?
A cab card is the registration document issued under IRP that must be carried in the vehicle at all times. It lists the vehicle information, the registrant, the jurisdictions where the vehicle is registered, and the weight authorized in each jurisdiction. Officers at roadside inspections and weigh stations check the cab card to verify your vehicle is properly registered in the jurisdictions where it operates.
When does IRP registration expire?
IRP registration expires on the last day of your registration year, which is determined by your base jurisdiction. Most jurisdictions use a staggered system based on the last digit of your fleet number or other criteria. Renewal applications are typically due 60-90 days before expiration. Late renewals may result in temporary operating restrictions until the renewal is processed.
What is the difference between IRP and standard registration?
Standard registration (base plate) only allows you to operate within your home state. IRP (apportioned plates) allows you to operate across all member jurisdictions — 48 US states, DC, and Canadian provinces — by paying a proportional share of each jurisdiction's registration fee. IRP is required for interstate commercial vehicles meeting the weight/axle thresholds. The total cost of IRP is typically higher than a single-state plate but far less than registering separately in every state.
Need Help with IRP Registration?
Our compliance team tracks IRP expiration dates, verifies cab card coverage for every route, and helps carriers navigate the registration process. Keep your truck legal in every state.