IRP Apportioned Registration

IRP is the registration system that allows commercial vehicles to operate in multiple states with one license plate. Different from IFTA (which is fuel tax).

What IRP is

• Vehicle registration for interstate operations
• One license plate that's recognized in all IRP member jurisdictions (US states + Canadian provinces)
• Apportioned fees based on miles in each state
• Required for any commercial vehicle that crosses state lines AND operates in 2+ jurisdictions

What IRP is NOT

• Not your operating authority (FMCSA MC# is separate)
• Not your USDOT number (that's separate)
• Not IFTA (that's fuel tax)
• Not state DMV registration (that's the underlying registration, IRP is the apportioned overlay)

Initial registration

• Apply through base state (where vehicle is "based")
• Submit fleet roster, expected mileage, registration fees
• Receive apportioned plates within 30-60 days
• Renewal annually

Quarterly mileage reporting

• IRP requires quarterly distance reports
• Distance by state for each vehicle
• Submitted via base state portal
• Used to calculate apportioned fees

Fees and apportionment

• Fees calculated by mileage in each state
• Example: 30% miles in TX, 25% in OK, 20% in AR = fees apportioned accordingly
• Each state has its own fee rate per mile

Common errors

• Vehicle plates wrong state (must be base state)
• Mileage reporting late or missing
• Apportionment claims (claiming miles in a state where you didn't operate)
• New vehicle not added to IRP fleet immediately

When to add a vehicle

• Within 30 days of acquisition
• Updates the apportionment percentages
• Required for any vehicle operating interstate

When to remove

• When vehicle is sold or retired
• Within 30 days
• Update fleet roster

Compass IFTA module

Connects to fleet roster:

• Tracks IRP plate expiration per vehicle
• Monthly mileage by state (from ELD)
• Quarterly IRP reporting data
• Multi-jurisdiction fee tracking

CFR citations

• IRP Articles of Agreement
• FMCSA Operating Authority

How Compass surfaces this

Searchable in Compass Ask. Runs against carrier fleet data when invoked from the relevant tracker. Read-only; no actions without explicit user approval.

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The AI-powered DOT compliance platform for fleets 1–100 power units. Try a 7-day free trial — no credit card required — at https://x3compass.com/?utm_source=skill&utm_medium=github&utm_campaign=ifta-irp-apportioned-registration

X3 Compass turns these skills into a complete operational platform: driver qualification files, drug & alcohol consortium, MVR pulls, hours-of-service tracking, hazmat shipping, IFTA filing, FMCSA audit prep, and DataQ dispute drafting — all CFR-cited, all in one place.

This skill is published under the X3 Compass open skills initiative. Contributions welcome at https://github.com/x3fleetsafety/skills