First: are you a qualified motor vehicle?
IFTA applies to a qualified motor vehicle, defined in section R245 of the Articles of Agreement as a vehicle used, designed, or maintained to transport persons or property, and:
- having two axles and a gross vehicle weight or registered gross vehicle weight exceeding 26,000 pounds; or
- having three or more axles, regardless of weight; or
- used in combination, when the combination exceeds 26,000 pounds gross or registered gross weight.
Recreational vehicles are excluded, and a vehicle only counts as recreational if it is not connected with any business use at all.
Read that first bullet carefully, because it is the one that saves people money. A two-axle straight truck at or under 26,000 pounds is not a qualified motor vehicle, even if it crosses state lines every day. Plenty of small carriers running box trucks and light straight trucks interstate are outside IFTA entirely and have been sold a license anyway. Three or more axles pulls you in regardless of weight, which is why a small three-axle truck can qualify when a heavier-looking two-axle one does not.
IFTA is also separate from the federal obligations on this site. It is an agreement among jurisdictions, not an FMCSA program, so it is administered by your state rather than the federal government and has nothing to do with your USDOT number.
How the agreement actually works
You license with one base jurisdiction, get a license and decals, and file a single quarterly return there covering every member jurisdiction you drove in. Under section R920, timely filing and payment to your base jurisdiction discharges your responsibility for filing and paying every other member jurisdiction. That is the whole benefit: one return instead of one per state.
The return reconciles two things per jurisdiction: the miles you traveled there, and the fuel you bought there. Buy more fuel in a state than you burned in it and you have a credit; burn more than you bought and you owe. This is why mileage and fuel receipts by jurisdiction are the records that matter, and why an audit is really an audit of your distance records.
The deadline
Returns are quarterly, and under section R960 the return and full payment are due on the last day of the month following the close of the reporting period. In practice:
- Quarter 1, January to March, due April 30
- Quarter 2, April to June, due July 31
- Quarter 3, July to September, due October 31
- Quarter 4, October to December, due January 31
If the last day of the month falls on a Saturday, Sunday, or legal holiday, the next business day is the due date.
One rule catches people every year: a return is required even if you conducted no operations and used no taxable fuel during the quarter. A quarter parked is still a quarter you file for. Missing a zero return is a late filing like any other, and repeated late filing is a route to having the license revoked.
What it costs
There is no federal fee, because this is not a federal program. Your base jurisdiction sets the price of the license and the decals, and those vary by state, so we are not quoting a figure that would be wrong for most readers. Your state's revenue or transportation agency publishes its own current amounts, and that agency is also who you file with.
What you should be wary of is a third-party service presenting an IFTA license as though it carried a large fixed government cost. The application goes to your own state, and the state's fee is whatever the state publishes.
If you decide you are not covered
Write down why, with the axle count and weight rating you relied on, and keep it. The question comes back every time someone tries to sell you a service, and having your own answer on file is the cheapest way to stop paying for something you do not owe. If you are near the 26,000 pound line, or you add a trailer that pushes a combination over it, the answer can change, so it is worth revisiting when the equipment changes rather than once forever.