Resource Guide
IFTA Explained: Registration, Quarterly Filing & Deadlines
General information for motor carriers · Not tax advice.
Photo: Sven Brandsma on Unsplash · Unsplash License
The International Fuel Tax Agreement (IFTA) simplifies how interstate carriers report and pay fuel-use taxes. Instead of filing separate fuel tax returns in every state you drive through, you file one quarterly return with your base jurisdiction, which then distributes the tax among the states and provinces where you traveled.
Who Needs IFTA?
You generally need IFTA if you operate a qualified motor vehicle across two or more member jurisdictions. A qualified motor vehicle is one that:
- Has a gross vehicle weight (or registered weight) over 26,000 pounds, or
- Has three or more axles on the power unit regardless of weight, or
- Is used in a combination exceeding 26,000 pounds.
Body style does not decide this — weight and axles do. A box truck (straight truck) needs IFTA only if it crosses into a second jurisdiction and meets the qualified vehicle test above. A common 26 foot box truck rated at 26,000 pounds or less, running on two axles, usually falls under the threshold and does not need IFTA, while a heavier straight truck that crosses state lines does.
How IFTA Works
You register in one base jurisdiction (typically your home state) and receive a single IFTA license plus decals for each qualified vehicle. Each quarter you report the miles traveled in each jurisdiction and the fuel purchased, and the system calculates the net tax owed (or refund) based on each jurisdiction's fuel tax rate.
IFTA Quarterly Deadlines
- Q1 (Jan–Mar): due April 30
- Q2 (Apr–Jun): due July 31
- Q3 (Jul–Sep): due October 31
- Q4 (Oct–Dec): due January 31
File even if you had no travel in a quarter — a "zero" return is still required.
Recordkeeping
Keep accurate distance records (miles per jurisdiction) and fuel receipts. Good records are essential for an accurate return and to survive an audit.
How Consulics Helps
We handle IFTA registration and quarterly filing so you stay compliant without the paperwork headache — accurate calculations, on-time filing, and a single point of contact.
Frequently Asked Questions
Who needs IFTA?
IFTA applies to carriers that operate a qualified motor vehicle in two or more IFTA member jurisdictions. A qualified motor vehicle generally has a gross vehicle weight over 26,000 pounds, or three or more axles regardless of weight, or is used in a combination exceeding 26,000 pounds.
What are the IFTA member jurisdictions?
IFTA covers the 48 contiguous U.S. states and 10 Canadian provinces. Each carrier registers in a single base jurisdiction, which issues one IFTA license and decals valid across all members.
When are IFTA returns due?
IFTA fuel tax returns are filed quarterly and are generally due by April 30, July 31, October 31, and January 31 for the preceding quarter. A return must be filed even for quarters with no travel.
What records do I need to keep for IFTA?
You must track total miles traveled in each jurisdiction and all fuel purchased, with supporting trip records and fuel receipts. These determine how much fuel tax you owe or are credited in each jurisdiction.
Do box trucks need IFTA?
It depends on weight and axles, not on the body style. A box truck needs IFTA only if it is a qualified motor vehicle that crosses into a second jurisdiction: a gross or registered weight over 26,000 pounds, or three or more axles on the power unit. A common 26 foot box truck rated at 26,000 pounds or less, running with two axles, usually falls under the threshold and does not need IFTA. A heavier straight truck that crosses state lines does.
Need help with IFTA?
Let Consulics handle your registration and quarterly returns.