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Comparison · updated May 2, 2026

UCR vs IFTA: Two Different Interstate Filings

By Korey Sharp-Paar · Reviewed by the Fast Trucking Compliance team

Quick answer

UCR is an annual fleet-tiered registration fee under 49 CFR Part 367 due every December 31 for interstate carriers, brokers, and freight forwarders. IFTAis a quarterly fuel-tax reconciliation among 58 jurisdictions for vehicles over 26,000 lbs or three-plus axles. Different statutes, different deadlines, different math. UCR fees scale with fleet size - Tier 1 ($46) up to Tier 6 (~$44,800) - and missing December 31 triggers state-level out-of-service orders at weigh stations. IFTA returns are due April 30, July 31, October 31, and January 31; two consecutive late filings can revoke the IFTA license, which in most states blocks IRP plate renewal. UCR is filed once a year through the carrier’s base state; IFTA is filed quarterly with the base jurisdiction along with mileage and fuel records that must be retained for four years per IFTA Procedures Manual P560.

Both filings touch interstate operations and both have aggressive enforcement, which is why they often blur in conversation. They share almost no DNA. UCR is a registration fee - pay once a year, the state knows you exist for safety enforcement purposes. IFTA is an accounting reconciliation - file every quarter so the 58 member jurisdictions redistribute fuel tax based on where the truck actually drove and fueled.

See the BOC-3 vs UCR guide for the deep dive on UCR and the IFTA filing complete guide for quarterly mechanics.

Side-by-side comparison

AttributeUCRIFTA
Statutory basis49 USC §14504a + 49 CFR Part 367IFTA Articles of Agreement (intergovernmental compact); state implementing statutes
CadenceAnnual - registration year runs Jan 1 to Dec 31Quarterly - Q1, Q2, Q3, Q4
Filing deadlineDecember 31 of the registration year (some states accept until March 1 of the next year with penalty)Q1 Apr 30 / Q2 Jul 31 / Q3 Oct 31 / Q4 Jan 31
Fee basisTiered by fleet size - Bracket 1 (~$46) to Bracket 6 (~$44,836)Based on miles and fuel per jurisdiction; net redistribution among states
Who must fileEvery interstate motor carrier, broker, and freight forwarder + private fleetsVehicles over 26,000 lbs or 3+ axles operating in 2+ IFTA jurisdictions
Filing destinationCarrier base state via the UCR national registration systemCarrier base jurisdiction
Roadside enforcementYes - failure to register can put truck out of serviceYes - IFTA decals visible on cab; missing decals trigger inspections
Typical year-1 cost (single truck)About $46Net amount based on operations; license fee around $10–$15 + decals

When to choose each

When to choose UCR

Every interstate carrier, broker, freight forwarder, and private fleet that crosses state lines

Required regardless of weight or fleet size. The Bracket 1 fee covers 0–2 vehicles. Use the UCR fee calculator to identify your bracket and confirm the year's published amount.

When to choose IFTA

Operators of qualified motor vehicles - over 26,000 lbs or three-plus axles - crossing state lines

IFTA only kicks in when at least one qualified vehicle in your fleet crosses an IFTA jurisdiction line. Use the IFTA calculator to model the quarterly net per state. Smaller intra-region carriers can use trip permits in lieu of registration.

Next step in your filing flow

Need UCR filed today? Our spoke FastUCRFiling lodges your registration the same business day. For IFTA prep run the IFTA calculator, then read the IFTA filing complete guide.

Frequently asked questions

Do I owe UCR even if I do not haul for hire?

Yes. UCR applies to every interstate motor carrier, including private fleets that haul their own goods. The exemption is for carriers that operate purely within one state.

Does paying UCR cover IFTA?

No. They are separate filings, separate statutes, separate fees, separate deadlines. UCR money funds safety enforcement; IFTA money funds highway infrastructure across the 58 jurisdictions.

My truck is under 26,000 lbs. Do I owe IFTA?

Only if it has three or more axles, or if it operates as part of a combination over 26,000 lbs. Two-axle vehicles under 26,000 lbs are exempt from IFTA but still owe UCR if they cross state lines for hire.

Where do I file each one?

UCR is filed in your base state through the national UCR registration system. IFTA is filed quarterly with your IFTA base jurisdiction (typically the same state where your operations are managed).

What happens if I miss either deadline?

Missing UCR can result in roadside out-of-service orders and fines once enforcement begins each year. Missing IFTA quarterly deadlines triggers $50 minimum penalties plus interest, and repeated misses can revoke your IFTA license, which in turn blocks IRP plate renewal.

Authoritative citations

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