IFTA Guide for Trucking Businesses

Who This Applies To

• Interstate motor carriers with qualified vehicles — generally over 26,000 lbs GVWR or three or more axles — that operated in two or more IFTA member jurisdictions during the quarter.
• Owner-operators running under their own authority who cross state or provincial lines and file their own quarterly IFTA return with the base jurisdiction.
• Fleet managers tracking which vehicles in a mixed fleet qualify, and whether any leased owner-operators file under the fleet's IFTA account or hold their own license.
• New authorities getting IFTA credentials before the first interstate trip and preparing for a first quarterly return before a full quarter of records exists.

What To Verify

• That the business holds an active IFTA license from the correct base jurisdiction — the state or province where the commercial vehicles are based and records are kept.
• The current quarter's due date with the base jurisdiction directly. Weekend and holiday shifts vary; don't assume the generic January 31 / April 30 / July 31 / October 31 calendar.
• The official current-quarter fuel tax rate matrix from IFTA Inc. or the base jurisdiction before calculating anything. Rates change every quarter; last quarter's matrix is stale.
• Whether any vehicles qualify for fuel-type or use-based exemptions — natural gas, electricity, or agricultural use categories — since those vary by jurisdiction and affect how returns are prepared.

Step-by-Step Overview

1. Confirm the IFTA account is in active status and that decals are displayed before the quarter opens. A lapsed account or missing decals creates a compliance problem before the first mile is driven.
2. Collect trip records as operations happen, not at filing time. Each trip should show: date, vehicle unit, starting and ending points, route, and odometer readings where borders are crossed.
3. Match fuel receipts to vehicle and jurisdiction as purchases are made. A receipt needs to show the purchase date, seller name and location, vehicle identifier, fuel type, and gallons — not just the total charge.
4. At quarter end, pull the official rate matrix and calculate net tax per jurisdiction: miles operated × rate, minus tax already paid at the pump in that state or province.
5. File the return and pay any balance — or request a refund credit — by the base jurisdiction's accepted deadline. Confirm that deadline directly; don't assume a standard date.

Common Mistakes

• Treating IFTA as a once-a-quarter task. Trip logs and fuel receipts have to be collected as operations happen; they can't be reconstructed accurately after the fact.
• Using last quarter's rate matrix. IFTA rates change quarterly. The day a new quarter opens, the prior matrix is wrong for new calculations.
• Fuel receipts that pass a visual check but fail an audit. A receipt that doesn't identify the purchase state or doesn't tie to a specific vehicle isn't valid IFTA support — regardless of the dollar amount.
• Confusing IFTA license renewal (annual, tied to decal year) with the quarterly fuel tax return. Missing either one has different consequences and different remedies.
• Not accounting for every jurisdiction entered. A driver who crossed into a state for 30 miles still generates an IFTA obligation in that state.