What happens if you don't file IFTA: penalties, revocation, audits, and the one-truck question

IFTA is the agreement that lets a carrier hold one fuel tax licence from its base state or province and file one return covering every jurisdiction it ran in. In exchange, the return has to be filed every quarter, on time, with records behind it. Here is what happens when it is not.

The quarterly schedule

Quarter	Miles and fuel from	Return due
Q1	January to March	April 30
Q2	April to June	July 31
Q3	July to September	October 31
Q4	October to December	January 31

If the due date falls on a weekend or holiday, the next business day applies. The return is due whether you owe tax, are owed a refund, or ran zero miles.

Penalty and interest

The IFTA agreement sets the minimum. A late return, or a return filed without full payment, draws a penalty of 50 USD or 10 percent of the net tax due, whichever is greater. Interest then accrues on the tax owed to each jurisdiction, computed monthly from the due date, at a rate set annually under the agreement. Because the interest is per jurisdiction, a carrier that owes tax to six states pays interest six times.

A quarter with a small net tax still costs 50 USD in penalty. A quarter with a large net tax, for example a Quebec carrier who bought most of its fuel at home and ran heavy miles in New York and Pennsylvania, can see a penalty in the hundreds of dollars plus interest in each state.

Some base jurisdictions add their own penalties on top of the IFTA minimum. Check your state’s or province’s notice; the higher figure applies.

Revocation

Two delinquent quarters can lead to revocation of the IFTA licence. Some jurisdictions act after one. When the licence is revoked:

• The decals on your trucks are no longer valid, in every member jurisdiction, not only your base.
• Every trip across a state or provincial line requires a fuel trip permit purchased in advance from each jurisdiction, typically 15 to 60 USD each.
• Roadside officers see the revocation in the IFTA Clearinghouse. A truck with a revoked licence and no trip permit is subject to a citation and can be placed out of service until a permit is bought.
• Reinstatement requires filing all missing returns, paying the balance with penalty and interest, and reapplying. Several jurisdictions demand a bond before reissuing a licence that was revoked for non-filing.

Revocation also carries over. An IFTA licence revoked in one base jurisdiction blocks a new licence in another until the original account is cleared.

Audit exposure

Base jurisdictions audit a set share of their IFTA licensees each year, on behalf of all members. A carrier with late or missing returns is a natural selection. In an audit, the auditor asks for:

• Distance records for every trip, by jurisdiction, from an ELD, GPS or trip sheets, with odometer readings.
• Fuel receipts showing date, seller, location, gallons or litres, fuel type and the unit fueled.
• Bulk fuel withdrawal records if you have a tank.
• Unit list with the decal numbers.

Records must be kept for four years from the due date of the return. Where records are missing, the auditor estimates distance, often using an assumed miles-per-gallon of 4.0, and disallows tax-paid fuel credits that cannot be documented. The result is an assessment for every quarter in the audit period, with penalty and interest, and it can run to thousands of dollars for a single truck.

A carrier who never filed at all faces an audit with no statute of limitations on the unfiled periods.

Does one truck need IFTA?

The obligation is defined by the vehicle, not the fleet size. A qualified motor vehicle is one used to transport persons or property that:

• has two axles and a registered or gross vehicle weight over 26,000 lb, or
• has three or more axles regardless of weight, or
• is used in a combination with a combined weight over 26,000 lb.

Recreational vehicles are excluded. If your one truck meets any of those tests and crosses a state line, or a provincial line into Quebec or Ontario, you need an IFTA licence from your base jurisdiction and a set of decals for the truck, and you file four returns a year.

The alternative is a fuel trip permit for each jurisdiction entered on each trip. That works for a truck that leaves its home state once or twice a year. It stops working after that, because permits cost 15 to 60 USD each per jurisdiction and have to be bought before crossing.

Cross-border note

Quebec and Ontario are IFTA members. A Canadian carrier’s IFTA licence from Revenu Québec or the Ontario Ministry of Finance covers US states, and a US carrier’s licence covers the provinces. Convert kilometres and litres correctly, since the return is filed in the base jurisdiction’s units. New York miles also drive a separate New York HUT return, which IFTA does not cover.

DIY versus a service

Filing yourself is possible. Every base jurisdiction has an online portal, the tax rates are published each quarter, and an ELD with a mileage-by-jurisdiction report gives you most of the input. The costs of doing it yourself are time and the risk of errors that compound: a wrong jurisdiction split in one quarter, a fuel receipt entered in litres as gallons, a missed quarter during a busy month.

A service makes sense when:

• You run in more than three or four jurisdictions.
• Your ELD report and your fuel card report have to be reconciled by hand.
• You have missed a quarter before.
• You run cross-border and deal with two currencies and two unit systems.

Ask any service the same questions: what it costs per quarter, whether extra trucks cost extra, whether it reviews the ELD report for gaps, and whether it sends a reminder before the due date and a copy of the filed return after.

If you are already behind

1. File the missing quarters now, oldest first, even without full payment. Filing stops the delinquency count; payment stops the interest.
2. Pull your ELD or GPS mileage-by-jurisdiction reports and your fuel card statements for each missing quarter.
3. If records are gone for a period, reconstruct from dispatch records and tolls and note it on the return.
4. Contact your base jurisdiction about a payment plan if the balance is large. Most will work with a carrier who has filed.
5. Set up the calendar so it does not happen again.

What Profirm does for you

Profirm prepares and files your IFTA return every quarter from your ELD and fuel card data, checks the jurisdiction split for gaps, reminds you before each due date, and sends you the filed copy. At the time of writing a quarterly return for one to three trucks is 75 USD, each additional truck is 20 USD per quarter, and four quarters prepaid for one to three trucks is 279 USD. The licence and decals setup is 99 USD plus the base-state decal fee, usually 0 to 10 USD per set. If you are behind, we file the missing quarters first. We have filed Quebec and Ontario IFTA accounts with US miles since 1988. Profirm is a private firm, not a state or provincial tax office.