Which Miles Count for IFTA: Deadhead, Personal and Off-Highway

Not tax advice. This article explains in general terms which distance is reportable for IFTA. Rules vary by jurisdiction. Verify with your base jurisdiction before filing.

"Do empty miles count?" is the question that comes up most, and the answer catches people out because it is the opposite of what feels fair. You earned nothing on that leg. You still report it.

Here is the rule and its edges.

The default: every mile counts

For IFTA, you report all distance travelled by a qualified motor vehicle in a member jurisdiction, regardless of whether you were loaded, empty, or making money.

The tax is on road use. The road does not care whether there was freight in the box.

So the following all count:

• Loaded miles — obviously
• Deadhead and bobtail miles — running empty, or tractor without trailer
• Repositioning — driving to your next pickup
• Miles to and from the shop — if the qualified vehicle is on a public road
• Personal use of the truck — if it is a qualified motor vehicle on a public road, the distance is still reportable

That last one surprises people most. Taking the truck somewhere on a Sunday does not remove those miles from your quarter.

Why reporting empty miles usually helps you

There is a reflex to leave deadhead off the log, on the theory that reporting less means owing less. It does not work that way, and it generally costs you.

Remember how taxable gallons are derived:

total miles ÷ total gallons = fleet MPG
miles in a state ÷ fleet MPG = that state's taxable gallons

Leave miles out and your total miles drop while your gallons stay the same. Your fleet MPG falls. A lower MPG means more taxable gallons for every mile you did report — in every state.

Under-reporting distance does not shrink your bill. It distorts your MPG, usually against you, and leaves you with records that will not reconcile against your fuel purchases if anyone looks.

The genuine exceptions

A few categories can be treated differently, and every one of them is jurisdiction-specific. None should be assumed.

Off-highway or non-public-road distance. Miles run on private property, in a quarry, on a farm, or on other non-public roads may be excludable. Jurisdictions differ on what qualifies and what proof they want. Some want a separate log.

Fuel trip permit miles. If you ran a jurisdiction under a temporary trip permit rather than your IFTA licence, that distance is handled separately rather than reported as ordinary IFTA distance. Keep the permit.

Non-IFTA jurisdictions. Alaska, Hawaii, the District of Columbia, Yukon, the Northwest Territories and Nunavut are not IFTA members. Distance and fuel there are excluded from your IFTA figures entirely — but they must come out of your totals before your fleet MPG is calculated, not simply ignored. Leave them in by accident and every jurisdiction's number is wrong.

Non-qualified vehicles. A pickup below the weight threshold is not a qualified motor vehicle and its distance is not IFTA distance.

The pattern: exclusions exist, they are narrower than people hope, and each needs its own record.

What a distance record has to show

Whatever your method, a defensible record of a trip generally shows:

• Date of the trip
• Origin and destination
• Route taken
• Beginning and ending odometer readings
• Total distance
• Distance by jurisdiction
• Vehicle identification

That last-but-one line is where reconstruction falls apart. "Dallas to Chicago, 968 miles" is not an IFTA record. The per-state split is the part the quarter is built from, and it is far easier to capture while you still remember the route than three months later from a map.

Odometer gaps

A common audit finding is not a wrong number but a gap — trip one ends at 412,350 and trip two begins at 412,900, with 550 miles unaccounted for.

Those miles happened. Something moved the truck. An unexplained gap invites the question of what else is missing, and it is the kind of thing that turns a routine check into a longer one.

Log the short local runs and the shop trips. They are tedious and they close the gaps.

The short version

Report everything the qualified vehicle ran on public roads, loaded or not. Treat exclusions as narrow, documented exceptions rather than defaults. Keep the per-state split and keep the odometer continuous.

Under-reporting distance is not a saving. It is usually a self-inflicted higher bill plus a record that does not hold up.

How WheelsAndAxle fits

Trips record the date, truck, origin, destination and total distance, with the miles broken down per state underneath. Loaded and deadhead runs are both tracked, because both count. Trip permit miles are kept separate from ordinary distance, and non-IFTA jurisdictions are recorded but held out of the quarterly figures rather than mixed in — which is what keeps your fleet MPG honest.

We are not a tax advisor, CPA, or filing service. Verify with your base jurisdiction before filing.