Who needs IRP registration in California?

California-based commercial vehicles operating interstate at or above the combined gross weight line recorded in the sourced field. Lighter strictly-interstate vehicles may be exempt under reciprocal agreements, and intrastate-only trucks register with the DMV the ordinary way.

How are apportioned registration fees calculated?

By mileage share. Each member jurisdiction collects its registration fee in proportion to the percentage of your fleet miles run there, so you pay each state a slice instead of paying every state in full.

What does California require before it will base my IRP fleet?

An established place of business: a physical street address, a phone listed in the registrant's name, people who conduct the business there, and operational records kept on site and available for inspection. The application forms in the sourced field include a record-keeping agreement.

What do I actually receive once I apportion?

One apportioned plate and a registration certificate called a cab card, issued by California as your base state. The cab card lists every jurisdiction and weight the vehicle is registered for, and it is the document roadside enforcement checks.

When does IRP registration renew?

Annually. Fleets renew by midnight on the last day of the month of the assigned registration period, and the DMV's IRP operations office in the sourced field handles the process.

California IRP Registration: Cost and How to Apply

By Evan Reid, Founder of Haul Handbook · Updated Jul 18, 2026

California IRP administration

IRP member: Yes
Agency: California Department of Motor Vehicles (DMV)
Office: IRP Operations Section, DMV Headquarters, PO Box 932320, Mail Station H160, Sacramento, CA 94232-3200, phone (916) 657-7971
Fee structure: Apportioned by mileage: registration fees are pro-rated based on the percentage of highway mileage traveled in each IRP jurisdiction. For example, a fleet running 50 percent of its miles in California and 50 percent in Nevada pays 50 percent of each state's registration fees rather than full fees to both.
Cab card: Apportioned registration produces a single registration plate and a registration certificate (cab card) issued by the base state; the cab card lists the jurisdictions and weights for which the vehicle is registered.
Process: forms: MC 2117 I (Carrier Data Schedule A/B); MC 2118 I (Vehicle Data Schedule C); MC 522 I (Record-keeping agreement); MC 5034 I (Agent authorization, if applicable); REG 31 (Vehicle verification)
Process: base jurisdiction requirements: To base an IRP fleet in California the registrant must have an established place of business: a physical location with a street address, telephones listed in the registrant's name, employed persons conducting the registrant's business, and operational records maintained there and available for inspection.

More California IRP rules

Who must apportion: note: Most California based commercial vehicles operating interstate at a gross vehicle weight (GVW) or combined gross weight (CGW) of 26,001 pounds or more must have IRP registration or trip permits. Vehicles at 26,000 pounds or less operating strictly interstate may be exempt under reciprocal agreements.
Renewal: cycle: annual
Renewal: note: IRP vehicles and fleets must be renewed annually by midnight on the last day of the month of the assigned registration period.

Base jurisdiction, renewal, and audit in detail

The rules that decide whether California can be your base jurisdiction, what qualifies, and what happens at renewal and audit. Each one is sourced.

Renewal: Cycle: annual
Renewal: Note: IRP vehicles and fleets must be renewed annually by midnight on the last day of the month of the assigned registration period.

What the California share of the fee is built from

An IRP bill is the base jurisdiction's own registration fee for the vehicle, apportioned by mileage, plus the same for every other jurisdiction on the cab card. These are the California inputs to that calculation, each with its official source.

Note: Apportioned by mileage: registration fees are pro-rated based on the percentage of highway mileage traveled in each IRP jurisdiction. For example, a fleet running 50 percent of its miles in California and 50 percent in Nevada pays 50 percent of each state's registration fees rather than full fees to both.

Who must apportion

The sourced field carries the combined gross weight line: most California-based commercial vehicles at or above it that operate interstate need apportioned registration or trip permits. Lighter vehicles running strictly interstate may be exempt under reciprocal agreements between the states. Purely intrastate trucks register with the DMV the ordinary way and skip the plan entirely.

Basing your fleet in California

California takes the established place of business test seriously. You need a physical location with a street address, a phone listed in the registrant's name, people who conduct the business there, and operational records maintained and available for inspection. The application runs on the carrier and vehicle schedules named in the sourced forms field, including a record-keeping agreement, because apportionment lives and dies on mileage records.

How apportioned fees work

Apportionment splits registration fees by travel share: each jurisdiction collects its fees in proportion to the miles your fleet runs there, instead of every state charging you in full. Run half your miles at home and half next door, and each side collects half its normal registration fee. The DMV issues one plate and a cab card listing the jurisdictions and weights the vehicle is registered for; that card is what roadside enforcement reads.

Renewal

Apportioned fleets renew annually, by midnight on the last day of the assigned registration month. Calendar it: an expired cab card sidelines an interstate truck everywhere at once, not just in California. The DMV's IRP operations office handles the paperwork, and the sourced office field carries the contact details.

What pairs with IRP

The same interstate operation that needs apportioned plates almost always needs an IFTA license through California, and heavy power units owe the federal Form 2290 heavy vehicle use tax before plates renew. To compare how other states run IRP, see the national IRP registration table.

Frequently asked questions

Who needs IRP registration in California?: California-based commercial vehicles operating interstate at or above the combined gross weight line recorded in the sourced field. Lighter strictly-interstate vehicles may be exempt under reciprocal agreements, and intrastate-only trucks register with the DMV the ordinary way.
How are apportioned registration fees calculated?: By mileage share. Each member jurisdiction collects its registration fee in proportion to the percentage of your fleet miles run there, so you pay each state a slice instead of paying every state in full.
What does California require before it will base my IRP fleet?: An established place of business: a physical street address, a phone listed in the registrant's name, people who conduct the business there, and operational records kept on site and available for inspection. The application forms in the sourced field include a record-keeping agreement.
What do I actually receive once I apportion?: One apportioned plate and a registration certificate called a cab card, issued by California as your base state. The cab card lists every jurisdiction and weight the vehicle is registered for, and it is the document roadside enforcement checks.
When does IRP registration renew?: Annually. Fleets renew by midnight on the last day of the month of the assigned registration period, and the DMV's IRP operations office in the sourced field handles the process.

Haul Handbook publishes educational information about trucking registration and compliance requirements. This is not legal, financial, or tax advice. Rules, fees, and deadlines change; confirm with the agency before you file or pay.