IFTA runs on a four-quarter calendar, and missing a deadline typically means penalties and interest on top of whatever tax you already owe. If you haul interstate and hold an IFTA license, these dates govern your year. Here is exactly what the schedule looks like and what you need to have ready when each quarter closes.
For a full breakdown of how IFTA works, who qualifies, and how to build a filing system that holds up under audit, see the IFTA guide for small fleets.
The Four IFTA Quarters and Their Due Dates
IFTA divides the calendar year into four reporting periods. Each quarter covers three months of operation, and the return is due roughly one month after the quarter closes.
- Q1: January 1 through March 31. Return due April 30.
- Q2: April 1 through June 30. Return due July 31.
- Q3: July 1 through September 30. Return due October 31.
- Q4: October 1 through December 31. Return due January 31 of the following year.
When a due date falls on a weekend or a state-observed holiday, many states extend the deadline to the next business day. Check with your base jurisdiction before assuming an extension applies, because that practice is not universal.
What Happens If You Miss a Deadline
IFTA penalties and interest are set by each base jurisdiction, so the exact amounts vary. The general pattern carriers commonly encounter: a late-filing penalty assessed per return (often a flat dollar amount or a percentage of tax owed, whichever is greater), plus interest accruing on any unpaid tax balance. Some jurisdictions also assess penalties for late returns even when no tax is owed for that quarter.
The practical risk beyond the immediate dollar amount: a pattern of late filings can flag your account for audit. Auditors typically examine three years of records, and a messy filing history can expand the scope of what they look at. Filing on time, even when the math is complicated, is the lower-risk path.
What You Need Before Each Quarter Closes
You cannot file accurately without two things: per-jurisdiction mileage and total fuel purchased. Both need to cover the full quarter, every truck under your IFTA license, every interstate mile traveled.
Many carriers find that the weeks leading up to a deadline are when the record-keeping gaps show up. Fuel receipts from a fuel stop two states over. A load that crossed four jurisdictions that nobody logged carefully. Building a routine around each quarter end, not scrambling after it, is what separates a smooth filing from a stressful one.
Items to have ready before you start the return:
- Total miles driven per jurisdiction for the quarter, by truck
- All fuel purchase receipts, dated and attributed to the truck that fueled
- Total gallons purchased per state or province, cross-referenced against receipts
- Your fleet's overall miles-per-gallon figure for the quarter
If records are missing, your base jurisdiction may assess tax at an unfavorable default MPG rate rather than giving you the benefit of the doubt. Complete records protect you.
How HaulerPro Helps You Stay Ahead of Each Quarter
HaulerPro captures per-jurisdiction miles automatically from dispatched loads using route polygon intersection across the 48 contiguous states. Every load you dispatch adds to the mileage record for that quarter, by jurisdiction, without manual entry. When a quarter closes, you open the IFTA panel, select the period, and export an ifta_miles.csv file with your jurisdiction-by-jurisdiction mileage already aggregated.
That mileage data is the input your accountant or your base jurisdiction's filing portal needs. HaulerPro does not generate a filing-ready return or calculate the tax owed. Fuel receipts are scanned and stored on each load record, giving you organized documentation to work from. The mileage data and the receipts together give you a clean starting point for every quarter, instead of spending the week before the deadline digging through a shoebox.
Driver status updates keep the load record current throughout the quarter, so the data you are working from at filing time reflects actual operations, not reconstructed guesses.
A Simple Quarter-End Checklist
Run through this at the end of each reporting period, before the due date arrives:
- Confirm all loads for the quarter are dispatched and closed in your records.
- Export your per-jurisdiction mileage data.
- Pull all fuel receipts for the quarter and reconcile them against loads.
- Calculate total gallons purchased per jurisdiction.
- Submit your return to your base jurisdiction by the due date.
- Keep copies of the return and all supporting records for at least four years. Many auditors and base jurisdictions commonly request records going back that far.
Four deadlines a year is manageable. The carriers who struggle are usually the ones treating IFTA as an end-of-year problem instead of a quarterly routine.
For more detail on the underlying mechanics, including how the tax calculation works and what auditors look for, read the complete IFTA guide for small fleets.
HaulerPro tracks per-jurisdiction mileage on every dispatched load so your quarterly numbers are ready when the deadline hits, not assembled under pressure. Start your 14-day free trial, no credit card required.