Permits and fuel tax are the part of trucking compliance that is not run by FMCSA. IFTA is administered by member jurisdictions through your base state, Form 2290 is an IRS matter, IRP is a registration plan between jurisdictions, and UCR is its own annual filing. The deadlines are fixed, the penalties are financial rather than safety-rated, and an audit here looks at distance and fuel records rather than driver files.
IFTA: what it covers and when it is due
IFTA is an agreement between the contiguous US states and Canadian provinces that lets a carrier file one quarterly fuel tax return with its base jurisdiction instead of filing separately in each state it ran through. The base jurisdiction collects, then distributes the tax to the jurisdictions where the fuel was consumed.
A vehicle is a qualified motor vehicle if it is used, designed or maintained to transport persons or property and it has two axles with a gross vehicle weight or registered gross vehicle weight of more than 26,000 pounds, or three or more axles regardless of weight, or is used in combination where the combination exceeds 26,000 pounds gross or registered gross weight. Recreational vehicles used purely for personal pleasure are excluded. Note the axle test: a three-axle straight truck qualifies even if it is well under 26,000 pounds, which surprises a lot of small operators.
The license is issued by your base jurisdiction and renewed annually, with two decals per qualified vehicle displayed on the exterior of both sides of the cab. Returns are quarterly and are due the last day of the month following the close of the quarter: April 30 for the first quarter, July 31 for the second, October 31 for the third and January 31 for the fourth. If the due date falls on a weekend or legal holiday, the next business day applies. Returns are due even for a quarter with no travel, which is the single most common way a small carrier drifts into a revoked license.
Records are the real exposure. IFTA requires the licensee to preserve records supporting the quarterly returns for four years from the return due date or filing date, whichever is later, and to produce them for audit by any member jurisdiction. That means distance records by jurisdiction for every trip and every qualified vehicle, plus original fuel receipts or acceptable equivalents showing date, seller, gallons or liters, fuel type, price, unit number and purchaser. GPS or ELD-derived distance data is acceptable to most jurisdictions when it is complete and retrievable, but partial data with gaps is worse than none, because an auditor who cannot verify your distance may assess using a standard miles-per-gallon figure instead of yours.
IRP, 2290, UCR and permits
IRP. The International Registration Plan apportions registration fees for qualified vehicles across the jurisdictions you actually travel in, and issues one apportioned plate and cab card from your base jurisdiction. Fees are calculated from the distance you report per jurisdiction, so the distance records behind an IRP application and the distance records behind an IFTA return should be the same data. They frequently are not, and a mismatch between what you told IRP and what you told IFTA is exactly what an auditor looks for first. Distance records supporting an application must be preserved for the mileage reporting period and for the years after the close of the registration year required by the plan, so treat these as long-life records rather than working papers.
Form 2290, heavy vehicle use tax. This is an IRS filing, not a DOT one. It applies to highway motor vehicles with a taxable gross weight of 55,000 pounds or more. The tax period runs from July 1 to June 30, and the return is due by the last day of the month following the month of first use. For a vehicle already in service at the start of the period and first used in July, that means an August 31 deadline. A truck first used in a later month gets its own deadline based on that month. Electronic filing is required when you report 25 or more vehicles on a return, and is available to anyone. The stamped Schedule 1 returned by the IRS is the proof of payment states require before they will register or renew the plate, which is why 2290 problems usually surface at the DMV counter rather than in an audit. Vehicles expected to run 5,000 miles or less on public highways (7,500 miles or less for agricultural vehicles) can be reported as suspended, but a return is still filed and mileage still has to be watched.
UCR. The Unified Carrier Registration is an annual registration and fee for interstate motor carriers, brokers, freight forwarders and leasing companies. The fee is banded by the number of commercial motor vehicles you operate, registration for the coming year opens in the autumn, and enforcement is at the roadside in participating states. Carriers who let it lapse generally find out during an inspection.
Trip, fuel and oversize permits. A vehicle without IRP apportionment for a jurisdiction, or without an IFTA license, can usually run on a temporary trip permit and a fuel permit bought before entry. Oversize and overweight loads need permits from each state crossed, often with routing conditions, escort requirements and time-of-day restrictions. These are per-trip decisions and they fail in one of two ways: bought too late, or bought for the wrong configuration.
State mileage taxes that sit outside IFTA. Four states run their own weight-distance or highway use taxes in addition to IFTA, and each needs its own registration and return. New York has the Highway Use Tax (HUT) with a certificate of registration and decal, generally for vehicles at 18,000 pounds gross weight or more. Kentucky has the KYU weight-distance tax, generally at 60,000 pounds combined licensed weight or more. New Mexico has the Weight Distance Tax, generally at 26,000 pounds or more. Oregon runs a weight-mile tax, generally at 26,000 pounds or more, and does not tax diesel at the pump for those vehicles. Carriers that pass through these states occasionally are the ones most likely to miss the registration entirely.
Filing, deadline and the evidence kept
| Filing | Deadline | Evidence to keep |
|---|---|---|
| IFTA quarterly return | Last day of the month after each quarter: April 30, July 31, October 31, January 31. | Distance by jurisdiction per vehicle and fuel purchase records, retained 4 years from the due or filing date, whichever is later. |
| IFTA license and decals | Annual renewal through the base jurisdiction, decals displayed on both sides of the cab. | Current license copy in the vehicle as required by your base jurisdiction, and the decal assignment by unit. |
| IRP apportioned registration | Annual renewal on your registration year, with distance reported per jurisdiction. | Individual vehicle distance records and the trip data behind the reported mileage, matching what IFTA was told. |
| Form 2290 (HVUT) | Last day of the month following the month of first use; tax period July 1 to June 30. | Stamped Schedule 1 as proof of payment for state plate registration, and mileage evidence for suspended vehicles. |
| UCR annual registration | Annually for the following calendar year, fee banded by fleet size. | Payment confirmation and the vehicle count used, in case the band is challenged. |
| State weight-distance (NY, KY, NM, OR) | Per each state’s own filing cycle, separate from IFTA. | Jurisdiction-specific mileage by unit and the state credential or decal where one is issued. |
| Trip, fuel and oversize permits | Before entering the jurisdiction or moving the load. | Permit copy carried with the vehicle, matched to the actual configuration and route. |
Where carriers get caught
Fuel tax audits do not usually find fraud. They find missing data. The recurring findings are: quarters filed from fuel receipts with estimated mileage rather than measured distance; no return filed for a quarter with no travel; personal or non-taxable miles mixed into jurisdictional distance; fuel bought in a state the trip records never show the truck entering; receipts that lack the unit number so they cannot be tied to a vehicle; bulk fuel storage with no withdrawal log; and ELD data that was never exported before the provider was changed, which leaves a hole in the four-year retention.
The second cluster is registration mismatch. An IRP application reporting one distance profile and IFTA returns reporting another invites an audit of both. The third is timing: a 2290 not filed before a plate renewal, or a UCR lapse found at the roadside. None of these are safety findings, so they do not touch your BASIC percentiles, but the assessments and interest are real money and a revoked IFTA license stops the truck just as effectively as an out-of-service order.
What a permits and fuel tax provider should handle
Quarterly returns
Distance and fuel data collected per unit and per jurisdiction, reconciled before filing, with the return filed on time even for zero-travel quarters.
Registration work
IRP applications and renewals, supplements when units are added or removed, UCR each year, and 2290 filing with the stamped Schedule 1 returned to you.
Record retention
Four years of IFTA supporting records held in a form you can export, including ELD or GPS distance data preserved across any change of telematics provider.
Audit response
Handling a jurisdiction audit notice, assembling the sample requested, and explaining variance between reported and reconstructed distance.
Questions to ask a permits and fuel tax provider
- Which filings are in scope: IFTA returns, IFTA renewal, IRP, 2290, UCR, state weight-distance taxes and trip permits, or only some of these?
- Do you file zero-travel quarters automatically, and what is your process when our data arrives late?
- How is distance captured, and do you reconcile it against the fuel purchases before filing rather than after?
- Will the distance used for IRP match the distance reported on our IFTA returns, and who checks that?
- Where are the four years of supporting records held, and can we export them in full if we move providers?
- Do you handle New York HUT, Kentucky KYU, New Mexico WDT and Oregon weight-mile registrations and returns for the states we run?
- Who is responsible if a return is filed late: what does your engagement say about penalties and interest?
- If a jurisdiction opens an audit, do you respond and represent the filings you prepared, and at what cost?
DOT Compliance Companies is an independent platform that connects carriers with compliance providers. We are not FMCSA, the IRS or any state tax authority, and we do not file returns ourselves. The providers below do that work. If you are also building out safety-side records, see our pages on small fleet compliance and new entrant carriers, or start at the compliance hub.