Federal USDOT and MC authority gets a carrier legally operating across state lines, but it doesn't cover every requirement a carrier will encounter. A number of permits and registrations are handled at the state level or through multi-state agreements, and missing one can result in fines or being pulled from the road during a routine inspection.
In This Guide
1. Federal vs. State Requirements
Federal registration through the FMCSA establishes a carrier's basic legal right to operate, but states retain authority over vehicle registration fees, fuel tax collection, and certain categories of special permits, like oversize or overweight loads. A carrier running multi-state routes needs to understand both layers rather than assuming federal authority alone covers everything.
2. IRP Registration
The International Registration Plan (IRP) is an agreement among US states and Canadian provinces that apportions vehicle registration fees based on the miles driven in each jurisdiction, replacing the need to separately register in every state a carrier operates through. Carriers running interstate routes register under IRP through their base state rather than registering individually everywhere they drive.
3. IFTA Fuel Tax Reporting
The International Fuel Tax Agreement similarly simplifies fuel tax reporting across jurisdictions, requiring quarterly reports of miles driven and fuel purchased in each state, with tax owed or credited based on the difference. Carriers display an IFTA decal on their truck and must maintain mileage and fuel purchase records to support each quarterly filing.
IFTA reporting depends on accurate fuel purchase records by state. Keeping every fuel receipt, or using a fuel card that automatically tracks purchase location, makes quarterly IFTA filing significantly less error-prone.
4. Oversize and Overweight Permits
Loads exceeding standard size or weight limits require special permits, and the rules, fees, and application processes vary significantly from state to state, which is a particular concern for flatbed carriers covered in our guide on dry van vs. reefer vs. flatbed freight types. Some states allow same-day online permit applications; others require more advance notice.
5. Other State-Specific Permits
Some states impose their own additional registration or permit requirements beyond IRP and IFTA, particularly for carriers with a physical base or terminal located in that state. Checking each state's Department of Transportation website, or using a permit filing service familiar with multi-state requirements, helps avoid an unexpected compliance gap.
6. How to Check Requirements Before a New Lane
Before running a new lane for the first time, particularly one involving oversize freight or a state the carrier hasn't operated in before, checking that state's DOT website or consulting a permit filing service is worth the time investment. A filing service, while an added cost, often pays for itself the first time it catches a requirement a carrier would have otherwise missed.
Frequently Asked Questions
Do I need separate permits for every state I drive through?
Not for basic operating authority, IRP and IFTA agreements simplify multi-state vehicle registration and fuel tax reporting into a single home-state filing. However, oversize, overweight, or other special permits are often still required on a state-by-state basis.
What is IRP registration?
The International Registration Plan apportions vehicle registration fees among US states and Canadian provinces based on the miles driven in each jurisdiction, letting carriers register once through their base state rather than separately in every state they operate.
How do I find out what permits a specific state requires?
Checking that state's Department of Transportation website directly, or consulting a permit filing service experienced with multi-state trucking requirements, are the two most reliable ways to confirm requirements before running a new lane.
This guide is for informational purposes. Regulations, fees, and requirements change — always verify current information directly with the FMCSA, your state DOT, and qualified professional advisors before making business decisions.