IFTA due dates — 2026
Four deadlines a year, no extensions. Miss one and it's $50 or 10% of tax due (whichever is greater) plus monthly interest.
- Q2 due July 31, 2026
2026 filing calendar
| Quarter | Period | Due date |
|---|---|---|
| Q1 2026 | Jan 1 – Mar 31 | April 30, 2026 |
| Q2 2026 | Apr 1 – Jun 30 | July 31, 2026 |
| Q3 2026 | Jul 1 – Sep 30 | November 2, 2026 (Oct 31 is a Saturday) |
| Q4 2026 | Oct 1 – Dec 31 | February 1, 2027 (Jan 31 is a Sunday) |
Penalties
Late filing or payment: $50 or 10% of the net tax due, whichever is greater, plus interest per month (set annually, applied per jurisdiction). You must file even for quarters with zero miles — "no operations" returns take two minutes and skipping them still triggers the $50.
Missed a quarter?
File it now — penalties grow monthly, and two missed quarters is the classic trigger for license revocation and an audit letter. Build the late worksheet in the calculator with that quarter's rates (see the rate table), then file through your base state.
Frequently asked questions
Can I get an extension?
No. IFTA has no extension mechanism; the only mitigation is filing the return even if you can't pay in full, which stops the larger of the two penalty clocks in most base states.
What if the due date falls on a weekend?
It rolls to the next business day — that's why Q3 2026 is due November 2 and Q4 February 1, 2027.