IFTA miles by state
Jurisdiction mileage is the number an auditor tests first, because everything else on the return is derived from it. Get the miles right and the rest is arithmetic; get them wrong and the whole return is wrong in the same direction.
What an acceptable record looks like
Whether it comes from an ELD, a GPS platform or a paper trip sheet, a distance record has to contain enough to rebuild the trip:
| Field | Why it's there |
|---|---|
| Trip start and end dates | Places the trip in the right quarter |
| Origin and destination | The trip's shape |
| Routes travelled | How the jurisdiction split is justified |
| Beginning and ending odometer | Ties the trip to the vehicle |
| Total distance | Must reconcile with the jurisdiction totals |
| Distance by jurisdiction | The number the return is built on |
| Vehicle and driver | Which unit's fuel and miles these are |
GPS-based records generally need position readings at regular intervals — commonly every 15 minutes or better — so that a jurisdiction crossing can be located rather than inferred.
The mistake that costs the most
Filing jurisdiction miles taken from routing software rather than from what the truck did. Routed miles are a plan; IFTA wants the actual. The two differ every time a driver takes a different road, runs a detour, or repositions empty — and when an auditor finds that the miles cannot be traced to vehicle movement, the usual remedy is to throw out your fleet mpg and substitute a standard one.
That substitution is the real penalty. A standard mpg lower than your actual figure inflates taxable gallons in every jurisdiction, for every quarter under review.
Reconciling before you file
- Jurisdiction miles must sum to total miles. If they don't, something is missing — usually a trip nobody logged.
- Check fleet mpg for plausibility. A quarter that comes out at 9.4 mpg or 4.1 mpg is telling you a number is wrong, not that the truck changed.
- Account for every unit. A truck that was in the shop still has odometer readings that should tie out.
- Keep it for four years from the later of the due date and the filing date.
Doing it automatically
Adding up jurisdiction miles by hand is the part of IFTA that people actually hate, and it is the part a system should do. Automatic state-by-state mileage for every trip is part of TruckRadar TMS, the paid product for carriers and dispatch offices — the waiting list is here.
Today, the free IFTA calculator takes the jurisdiction miles you already have and does the tax side: fleet mpg, taxable gallons, credits, surcharges and the net.
Questions
How do I track IFTA miles by state?
From records that show where the truck actually went: an ELD or GPS system that logs position over time, or individual vehicle distance records kept by the driver. Either is acceptable; what matters is that the jurisdiction totals can be reconstructed from the underlying data.
What must an individual vehicle distance record contain?
The trip's start and end dates, origin and destination, the route taken, beginning and ending odometer readings, total distance, distance by jurisdiction, and the vehicle and driver it belongs to.
Can I estimate mileage between states?
No. Estimated or routed-software distance that cannot be tied back to actual vehicle movement is the most common finding in an IFTA audit, and the usual outcome is that your mpg is replaced with a standard figure — almost always to your disadvantage.
Do personal or unladen miles count?
Generally yes. IFTA distance is distance travelled by a qualified motor vehicle, loaded or empty. Some jurisdictions exempt particular distance types; your base jurisdiction's rules decide.
Does TruckRadar calculate miles by state?
Automatic state-by-state mileage for every trip is part of TruckRadar TMS, the paid product for carriers and dispatch offices — it is on the way rather than available today. The waiting list is here. The free IFTA calculator takes the jurisdiction miles you already have and does the tax arithmetic.