Who Has to File IFTA at All
You are required to hold an IFTA license if your vehicle operates in two or more IFTA member jurisdictions and meets either of these thresholds: it has two axles and a gross vehicle weight or registered gross vehicle weight over 26,000 pounds, or it has three or more axles regardless of weight. If you only haul within one state and never cross a state line with a qualifying vehicle, IFTA does not apply to you.
Once you register with your base jurisdiction and receive your IFTA license and decals, you are locked into the quarterly filing cycle for as long as that license is active — including quarters where you had no qualifying miles.
The Four Quarterly Deadlines You Cannot Afford to Miss
Each return covers one calendar quarter and is always due on the last day of the month following the end of that quarter. If that date falls on a weekend or holiday, most jurisdictions extend to the next business day — but do not count on that as a safety net.
What You Need to Have Ready Before You File
Each quarterly return requires total miles traveled per jurisdiction and total gallons of fuel purchased per jurisdiction, broken down by fuel type. This means you need complete trip records and fuel receipts — not estimates — for every jurisdiction you operated in during that quarter.
Acceptable fuel receipt documentation includes the date of purchase, seller name and address, number of gallons, fuel type, price per gallon, and your vehicle unit number or plate. Receipts that are missing any of these fields can be rejected in an audit. Keep originals or clear digital copies for at least four years from the filing due date or the date you actually filed, whichever is later.
What Happens When You File Late or Not at All
Under the IFTA Articles of Agreement, a late or unfiled return is assessed a penalty of $50 or 10 percent of the net tax due, whichever is greater. Interest also accrues on any unpaid tax from the date it was due. If you go multiple quarters without filing, penalties stack — one per missed return.
Chronic non-filing can result in your base jurisdiction suspending or revoking your IFTA license entirely. At that point you would need paper trip permits for every state you enter, which is expensive and operationally disruptive for any carrier running regular interstate lanes.
Common IFTA Mistakes Small Carriers Make
Most IFTA errors come down to incomplete recordkeeping throughout the quarter rather than a mistake on the return itself. By the time a deadline arrives, the data problem has already happened.
Annual License and Decal Renewal
Beyond the quarterly returns, your IFTA license and cab card must be renewed annually. Most base jurisdictions issue new credentials for the following calendar year starting in November, and the new decals must be displayed by January 1. Running with expired decals is a citable violation at weigh stations.
The quarterly filing cycle and the annual renewal are two separate obligations. Being current on your returns does not automatically renew your license — you still need to complete the renewal process with your base jurisdiction each year.
TruckIQ Radar's IFTA filing feature tracks your quarterly deadlines, stores fuel and mileage data by jurisdiction, and flags upcoming due dates so nothing slips through the cracks.
Try TruckIQ Radar →This article is for general informational purposes, not legal advice. Verify specifics against current regulations or your compliance counsel.