IRP apportioned plates: who needs them and how the fee is split

Who needs apportioned plates

The Plan covers "any Power Unit that is used or intended for use in two or more Member Jurisdictions and that is used for the transportation of persons for hire or designed, used, or maintained primarily for the transportation of property" and that meets one of three tests (IRP, Article II, “Apportionable Vehicle”):

• Two axles, over 26,000 lbs gross or registered weight. A heavy straight truck.
• Three or more axles, whatever the weight. A tandem-axle tractor meets this on its own.
• A combination over 26,000 lbs. A hotshot pickup and trailer can cross this line even though the pickup alone wouldn't.

Lighter trucks can still join: "a Power Unit, or the Power Unit in a Combination of Vehicles having a gross Vehicle weight of 26,000 pounds (11,793.401 kilograms), or less, nevertheless may be registered under the Plan at the option of the Registrant." (IRP). A two-axle box truck that stays at 26,000 lbs or less, loaded, doesn't have to. The Plan's commentary says vehicles that aren't apportioned register under each base state's general registration laws.

These are the same three tests IFTA uses for a qualified motor vehicle (IFTA Articles R245), so a truck that needs one usually needs the other. IFTA deadlines: IFTA due dates. All the weight lines side by side: what applies at your weight.

Picking a base state

"An Applicant may elect as its Base Jurisdiction any Member Jurisdiction (i) where the Applicant has an Established Place of Business, (ii) where the Fleet the Applicant seeks to register under the Plan accrues distance, and (iii) where Records of the Fleet are maintained or can be made available." (IRP, Section 305(a))

The Plan's definition of an Established Place of Business is strict. It's a physical structure you own or lease for at least 12 months, with signs and posted hours, which "shall be staffed a minimum of 20 hours per week by one or more persons employed by the Applicant or Registrant on a permanent basis" (Section 305(b)). "For the purposes of the IRP Established Place of Business requirements, virtual and/or shared office spaces shall not qualify."

If you run your business from home, you likely don't have that, and the Plan offers a second route: "If an Applicant does not have an Established Place of Business in any Jurisdiction the Applicant may designate as a Base Jurisdiction any Member Jurisdiction (i) where the Applicant can demonstrate Residence" (Section 305(c)-(d)). To prove residence, "an Applicant must provide a resident driver’s license or non-driver issued identification and demonstrate to the satisfaction of the Member Jurisdiction at least two of the following that reflect the declared address": income tax returns filed from that address, state income or property tax paid there, utility bills in your name, a vehicle titled or registered there, or other clear evidence.

How the fee is computed

Each state's share of your miles sets its share of the fee. The Plan defines your Apportionment Percentage as "the ratio of the distance traveled in the Member Jurisdiction by a Fleet during the Reporting Period to the distance traveled in all Member Jurisdictions by the Fleet during the Reporting Period" (IRP, Article II, “Apportionment Percentage”), and "The Apportionable Fees for a Fleet in a Member Jurisdiction shall be calculated by multiplying the Apportionment Percentage calculated for the Member Jurisdiction by the total Apportionable Fees required under the law of the Member Jurisdiction for full registration of the Vehicles in the Fleet for the Registration Year" (Section 400).

Florida's IRP page works one through, for a truck that ran 100,000 miles in four states:

Example and figures from FLHSMV, International Registration Plan, read Oct 25, 2026. They illustrate the method; each state sets its own full fee, usually by declared weight, so your numbers will differ.

There's no floor per state: "No Member Jurisdiction shall require any minimum registration fee for an Apportionable Vehicle." Your base state can still add its own charges: "A Base Jurisdiction may by law require payment of additional fees for each Apportioned Vehicle, such as for issuing Credentials or filing an application for apportioned registration." (IRP, Section 410)

Weights by jurisdiction

"The Cab Card issued for an Apportioned Vehicle shall contain on its face all of the Member Jurisdictions, the weight (in pounds or kilograms) or number of combined Axles for which it is registered in each one" (IRP, Section 610). You can register a lower weight in a state where you run light, which lowers that state's fee, but if the weights you ask for differ by more than 10 percent between states that register by gross weight, "the Base Jurisdiction may require the Applicant to provide documentation concerning the actual operations of the Vehicle." (Section 325). With the plate and cab card, the truck is "fully registered for any type of movement or operation in all Member Jurisdictions" (Section 510).

Your first year, with no miles yet

The fee is normally based on last year's miles, the Reporting Period: "the period of twelve consecutive months immediately prior to July 1 of the calendar year immediately preceding the beginning of the Registration Year for which apportioned registration is sought." (IRP, Article II, “Reporting Period”). A new carrier has none, so: "When the Application is for a Fleet that did not accrue any actual distance during the Reporting Period, the Base Jurisdiction shall assess registration fees for the Fleet based on the average per-Vehicle distance in each Member Jurisdiction" (Section 320(a)). Your base state builds that average from its other carriers' actual miles, and it updates the figures by March 31 each year (Section 320(c)). Some states call this estimated distance.

If you were leased on with your truck and are now going out on your own, the Plan uses your truck's real miles instead: "the actual distance accrued by the Vehicle during the Reporting Period shall be used to calculate the Apportionable Fees of the Fleet, but only if the operation will reflect the operation under the long term Lease." (Section 420(b)). Keep trip records from day one either way, because next year's fee comes from them.

Running one load before the plates arrive: "A Member Jurisdiction may issue a Trip Permit for a Vehicle or Combination of Vehicles in lieu of apportioned or full registration." (IRP, Section 525(a)). Each state decides how it issues trip permits.

Where to apply

You apply to your base state's IRP office, not to IRP, Inc. For a truck at 55,000 lbs or more, bring proof you paid the heavy vehicle use tax. The IRS: "Generally, states will require verification of payment of the tax for any taxable vehicle before they will register the vehicle." (IRS Instructions for Form 2290). Work out the tax with the Form 2290 calculator.

The IRP directory lists offices by state and province. Each base state sets its own application process, distance unit and filing deadlines (IRP, Section 315(a)).

Not legal or tax advice. Your base jurisdiction has the final say on your registration. Not affiliated with IRP, Inc. or any state.