IFTA tax returns should be filed on a quarterly basis.
Quarterly Due Dates
- 1st Quarter (January-March): April 30
- 2nd Quarter (April-June): July 31
- 3rd Quarter (July-September): October 31
- 4th Quarter (October-December): January 31
The tax return and full payment of tax is due on the last day of the month that follows the close of the tax reporting period. If the last day of the month falls on a Saturday, Sunday, or legal holiday, the next business day is considered the due date.