IFTA is a quarterly fuel-tax report filed by the licensee — usually the carrier when you are leased on, sometimes you when you run your own authority. The line on your settlement is not that report. It is the carrier’s recovery or credit of your share of the result: a debit when the true-up says you owe, a credit when it says you overpaid, and nothing at all in a quarter that has not been filed yet. Audit it against jurisdiction miles and fuel gallons, not against the pump price and not against the fuel surcharge. Those are three different systems that can all print on one page.
Who files, and what the settlement line actually is
The International Fuel Tax Agreement lets a licensee file one quarterly return in a base jurisdiction that then apportions fuel tax across the member jurisdictions the trucks ran. The licensee is the person whose name is on the IFTA licence. For a leased-on owner-operator that is almost always the carrier. For an operator running under their own authority it is the operator.
The settlement line is a billing event between you and the carrier, not the return itself. When the carrier is the licensee, it pays (or is refunded) the tax and then recovers (or credits) your share on the statement. When you are the licensee, you should not see an IFTA recovery at all — you should see fuel receipts and your own working papers. A recovery line on a statement for an operator who files their own IFTA is a line looking for an explanation.
Because the return is quarterly, the settlement line is often delayed relative to the trips it belongs to. A March trip can produce an IFTA debit in May. That lag is normal. A debit with no quarter named is not.
Debit, credit, estimate, true-up
Carriers recover IFTA in two common ways. Some take an estimated per-mile or per-trip fuel-tax charge every period and then true it up when the quarterly return is filed. Some wait for the return and post a single debit or credit. Both are recoveries. The estimated line is not the tax; the true-up is the tax, net of what was already taken.
A credit is not a gift. It means the estimate (or the previous recovery) overshot the return. A debit means it undershot. Either result should name the quarter, the miles by jurisdiction (or a pointer to a report that does), the gallons, and the net. A line that reads “IFTA” with an amount and nothing else is the same documentation failure as a “MISC” deduction.
An estimate that never trues up is the quiet leak. Recurring fuel-tax lines that look identical for quarters in which your miles were not identical are estimates that have become a fee. Ask when the true-up runs, and what happens to the estimate if you leave mid-quarter. That last question belongs with the final-settlement guide in this set.
What you need to check the number
Two inputs drive an IFTA return: miles by jurisdiction, and taxable gallons by jurisdiction. Miles usually come from the ELD or a trip sheet. Gallons come from fuel receipts, which is why a fuel-card programme that dumps a single monthly total with no location is a problem at IFTA time even when it is convenient at the pump.
You cannot audit the settlement line from the pump price. IFTA tax is not a cents-per-litre or cents-per-gallon surcharge on what you bought; it is a jurisdictional net of tax-paid gallons against miles run. A week of cheap diesel in one jurisdiction and empty miles in another can produce a debit even if you “bought a lot of fuel.” The working paper is the mileage-and-gallon report, not the fuel-card statement.
Ask the carrier for the per-truck, per-jurisdiction report that fed the return, for the quarter the line names. In the United States, where truth-in-leasing applies to a leased-on owner-operator, charge-back items have to be specified in the lease and you are owed the documents needed to check them. Use both rights. The truth-in-leasing guide in this set covers the document right; this page is the tax-line mechanics.
IFTA is not the fuel surcharge, and not GST/HST
Fuel surcharge recovers diesel-cost movement under the lease or the customer tariff, keyed to a published index. IFTA reconciles fuel tax across jurisdictions. GST/HST (Canada) or sales tax on fuel (some US states) is a third system again. A well-built statement keeps them on separate lines with separate references. A statement that folds them into “fuel” is not itemised enough to audit, and the deduction-glossary in this set is where that itemisation standard lives.
On a Canadian statement, GST/HST on the operator’s supply sits above the deduction block; IFTA recovery sits inside it. Mixing the two in one column is how an operator either remits tax they never collected or claims a credit they cannot support. The GST/HST guide in this set is the one to read for the tax you charge. This page is the tax that is recovered from you.
Leaving mid-quarter, and running your own plates
IFTA quarters do not line up with lease-end dates. If you leave in the middle of a quarter, the carrier still has to file for the miles you ran under its licence, and it will still want to recover (or credit) your share. The lease should say whether that true-up waits for the quarterly filing or is estimated on the final statement. An estimated final that is never revisited is how a departing operator overpays a quarter they never see the return for.
If you take your own IFTA licence when you leave, the miles already reported under the carrier’s licence stay on the carrier’s return. You do not re-file them. What you do need is a copy of the mileage the carrier reported for your truck in that stub quarter, so your first return under your own licence starts where theirs stopped. Ask for it in the same letter as the escrow accounting. The final-settlement guide in this set covers that letter.
FAQ
What does an IFTA deduction on my settlement mean?
It is the carrier recovering (or crediting) your share of a quarterly fuel-tax return the licensee filed. A debit means the true-up says you owe; a credit means an earlier estimate overshot. It is not a fuel receipt and it is not a fuel surcharge.
Who files IFTA when I am leased on to a carrier?
Usually the carrier, because the IFTA licence is in the carrier’s name. The settlement line is then a recovery of your share, not the return itself. If you run under your own authority and hold your own licence, you file, and a recovery line on the carrier’s statement needs an explanation.
Why is the IFTA line months after the trips?
Because the return is quarterly. A trip in the first month of a quarter often does not produce a true-up until after that quarter is filed. The line should still name the quarter it belongs to. A debit with no quarter is not auditable.
Can I check an IFTA settlement line against my fuel receipts?
Not by themselves. The return needs miles by jurisdiction and taxable gallons by jurisdiction. Fuel receipts supply gallons; the ELD or trip sheet supplies miles. Ask for the per-truck jurisdiction report that fed the return, then compare.
Is IFTA the same as the fuel surcharge?
No. Fuel surcharge is a contractual recovery keyed to a published diesel index. IFTA is a jurisdictional fuel-tax reconciliation. They can both print on one statement and they audit against different documents.
Related guides
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