Onramp Carrier

IFTA explained: who needs it and what counts

IFTA is the International Fuel Tax Agreement between 48 US states and 10 Canadian provinces. If you run a qualified motor vehicle across two or more member jurisdictions, you register once with your base jurisdiction and file a single quarterly fuel tax return instead of dealing with each state separately.

Last reviewed 3 August 2026

Is IFTA an FMCSA filing?

No — and this is the first thing worth straightening out, because it changes who you deal with. IFTA is administered by the member jurisdictions themselves through IFTA, Inc., not by the FMCSA. Your licence, your decals and your quarterly returns all come from your base jurisdiction, typically the state revenue or transportation department.

So unlike a BOC-3 or your MCS-150 update, nothing about IFTA goes through the FMCSA at all.

What counts as a qualified motor vehicle?

A vehicle used, designed or maintained for transporting persons or property, that meets any one of these:

Two axles and a gross or registered gross vehicle weight over 26,000 lbs (11,797 kg); or three or more axles regardless of weight; or used in a combination whose weight exceeds 26,000 lbs.

The three-axle rule is the one people miss. Weight is irrelevant there — a three-axle vehicle qualifies however light it is.

What is my base jurisdiction?

The member jurisdiction where your qualified vehicles are registered and where your operational records are kept. It processes your licence application, issues the licence and decals, sends you a return and the current tax rates each quarter, and handles the returns on behalf of every other member jurisdiction.

That single point of contact is the whole benefit of IFTA. Without it you would be filing separately in every state you drive through.

What do I actually have to do?

Apply to your base jurisdiction for an IFTA licence, then keep a copy of that licence in each qualified vehicle and display the decals. After that it is a quarterly rhythm: track distance travelled and fuel purchased in each jurisdiction, then file one return covering all of them.

Returns are quarterly and decals are renewed annually, but the exact due dates and renewal window come from your base jurisdiction — confirm them there rather than relying on a third-party page, including this one.

Do I need IFTA if I already have UCR?

They are unrelated and you may well need both. UCR is an annual registration fee banded by fleet size; IFTA is a fuel tax mechanism based on where you actually burned fuel. Neither substitutes for the other.

The practical difference: UCR is a fixed annual amount you can predict, while IFTA depends on mileage and fuel purchases and requires you to keep records good enough to survive an audit.

We do not file IFTA registrations or returns — this guide is here because carriers ask about it while sorting out their federal filings. We do file BOC-3 designations and UCR registrations. General information, not tax or legal advice.
Need your BOC-3 filed?

Enter your USDOT number and we prefill the rest from the FMCSA registry — one flat fee, all 50 states, filed the same day.

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