Home › Guides › UCR, IFTA, and IRP: What Each One Is and When It's Due
Three initials that get mixed up more than any others in trucking. Here is what each one actually is, who needs it, and the cadence to plan around — without inventing a single state-specific fee.
UCR, IFTA, and IRP all touch interstate operations, they all involve a state office, and they all carry a due date you can miss. That is about where the similarity ends. One is a yearly registration, one is a fuel-tax return you file four times a year, and one is a license plate you renew on a schedule your base state picks. Lumping them together is exactly how a carrier ends up current on one and quietly lapsed on another.
This guide keeps them apart. For each, we cover the same three things: who it applies to, how often it comes due, and where the official rule lives. We deliberately do not quote dollar amounts that change every year — fee tables move, and the agency's own portal is the only figure worth trusting. This is general information, not legal or tax advice, and DOTDeadline is not affiliated with or endorsed by any government agency.
UCR (Unified Carrier Registration) is a yearly fee-based registration for interstate motor carriers, brokers, freight forwarders, and leasing companies that operate in or through the participating states. If you run interstate, this one very likely applies to you.
The cadence is the simplest of the three because it is the same date for everyone. Registration for the upcoming year opens on October 1, the deadline to register and pay is December 31, and enforcement in participating states begins January 1. There is no formula and no staggering — just one hard annual date.
What you owe is set by a fee bracket based on your fleet size, and those brackets are adjusted from time to time. Rather than repeat a number that may be stale by the time you read it, check the current bracket directly at the UCR Plan portal, ucr.gov. Operating into a participating state without a current UCR invites fines and roadside enforcement, so it is not a filing to let slide.
IFTA (International Fuel Tax Agreement) is a fuel-tax reporting system, not a registration. It applies if you operate a qualified motor vehicle — broadly, over 26,000 pounds or with three or more axles — across two or more IFTA jurisdictions. If you only run within your home state, IFTA generally does not reach you.
Unlike the once-a-year filings, IFTA comes due four times a year, one return per calendar quarter, each due the last day of the month after the quarter closes:
There is also an annual IFTA license and decal renewal, typically due December 31. If a due date lands on a weekend or legal holiday, it rolls to the next business day. Penalties and interest are set per jurisdiction, and the rules are published through the member jurisdictions at iftach.org — confirm your exact obligations with your base jurisdiction, since IFTA is administered at the state level.
IRP (International Registration Plan) is how you register — and plate — a vehicle that runs interstate, paying registration fees apportioned across the states you travel. If you operate apportioned (interstate) vehicles, this is your plate.
Here is the part that trips people up: IRP renewal is annual, but there is no federal due date. Your renewal month is assigned by your base jurisdiction, and many states stagger registrations across the calendar. That means your month is a fact to look up once with your base state DMV or DOT — it cannot be derived from any national formula, and anyone who claims to calculate it for you is guessing.
Once you know your month, treat it as a fixed annual anchor. Expired apportioned plates draw citations and out-of-service risk at scales and roadside, so it is worth confirming your exact month with your base jurisdiction and writing it down. The official home for the plan is irponline.org.
Most small carriers running interstate touch all three, but not always. Use these rough tests, then confirm with the agency. UCR: do you operate interstate as a carrier, broker, forwarder, or leasing company? If yes, expect UCR. IFTA: do your qualified vehicles cross into a second IFTA jurisdiction? If yes, expect quarterly IFTA returns. IRP: do you need plates on an interstate vehicle? If yes, expect apportioned registration through your base state.
The traps are the edge cases. Pure intrastate operations often escape IFTA and IRP but may still face state-specific rules. A leased-on driver's obligations can differ from an authority holder's. When your situation is not clean-cut, the base jurisdiction — not a third party — is who to ask.
The reason these deadlines bite is that they never arrive together. UCR clusters at year-end, IFTA repeats every quarter, IRP floats on a month your state picked, and on top of all three sit the federal filings — your MCS-150 biennial update with FMCSA and Form 2290 heavy-vehicle-use tax with the IRS. Miss any one and you can end up out of service over paperwork.
If you want a free starting point, our MCS-150 due-date calculator shows your next federal update from your USDOT number in seconds — the last digit sets the month, the second-to-last digit sets odd or even year, on the 24-month cycle FMCSA requires. From there, DOTDeadline can hold UCR, IFTA, IRP, and 2290 in one calendar and remind you before each lands, so no single date is the one you forgot.
One last honest note: this article is general information, not legal or tax advice, and we are an independent reminder tool with no affiliation to or endorsement from FMCSA, the IRS, or any state agency. Where a fee or date can change year to year, the official portal always wins — check it, and confirm your specifics with your base jurisdiction.
UCR is a once-a-year registration due December 31, IFTA is a quarterly fuel-tax return (April 30, July 31, October 31, January 31), and IRP is an annual apportioned-plate renewal on a month your base state assigns. Know which apply to you, anchor each date, and confirm current fees on the official portal.
Enter your USDOT number once and see your MCS-150 due date free — then keep every federal deadline in one place.
Check my date →DOTDeadline is an independent reminder tool. It is NOT affiliated with, endorsed by, or connected to the FMCSA, the U.S. DOT, the IRS, or any government agency. General information only — not legal, tax, or compliance advice. Always confirm with the official agency.