IFTA Quarterly Filing: Deadlines, Process & Penalties
CFR Reference: IFTA Articles of Agreement R1220 | Max Fine: $500
The International Fuel Tax Agreement (IFTA) requires motor carriers operating in multiple jurisdictions to file quarterly fuel tax returns. You report miles driven and fuel purchased in each state, and the system calculates what you owe or are owed. Late filing means automatic penalties starting at $50 or 10% of your tax liability.
What It Is
IFTA is an agreement among the 48 contiguous US states, DC, and 10 Canadian provinces that simplifies the reporting of fuel use taxes by interstate motor carriers. Instead of filing separate fuel tax returns with each state, carriers file a single quarterly return with their base jurisdiction. The base jurisdiction then distributes the appropriate taxes to each member jurisdiction based on the miles traveled and fuel purchased in each.
Who Needs It
Motor carriers operating qualified motor vehicles (vehicles used, designed, or maintained for transporting persons or property with two axles and a GVWR over 26,000 lbs, or has three or more axles regardless of weight, or is used in combination when the combined weight exceeds 26,000 lbs) in two or more IFTA member jurisdictions. Recreational vehicles are exempt.
Deadline & Frequency
Q1 (January-March): due April 30. Q2 (April-June): due July 31. Q3 (July-September): due October 31. Q4 (October-December): due January 31 of the following year. If the deadline falls on a weekend or holiday, the due date is the next business day.
Step-by-Step Process
- 1
Track miles by jurisdiction
Record total miles traveled in each IFTA jurisdiction for the quarter. Use ELD data, GPS tracking, or manual trip sheets. Record odometer readings at each state line crossing. Miles should be separated by jurisdiction (state/province).
- 2
Track fuel purchases by jurisdiction
Save all fuel receipts for the quarter. Each receipt must show: date, seller name and address, number of gallons purchased, type of fuel, price per gallon, vehicle unit number or license plate. Organize purchases by the jurisdiction where fuel was purchased.
- 3
Calculate fuel tax owed or refund due
The IFTA return compares the fuel tax you already paid (through fuel purchases in each state) against the fuel tax you owe (based on miles driven in each state at that state's tax rate). If you drove more miles in a state than your fuel purchases there covered, you owe additional tax. If you purchased more fuel than your miles required, you get a credit.
- 4
File the quarterly return
File through your base state's IFTA portal (most states offer online filing). Enter total miles by jurisdiction, total fuel gallons purchased by jurisdiction, and the system calculates the net tax or credit. Pay any tax due by the filing deadline. Even if you had no operations during the quarter, you must file a zero return.
Consequences of Non-Compliance
- Late filing penalty: $50 or 10% of the net tax liability, whichever is greater.
- Interest accrues on unpaid amounts from the due date.
- Continued non-filing can lead to IFTA license revocation by your base jurisdiction.
- Without an IFTA license, you must purchase trip permits at each state border, which is far more expensive.
Frequently Asked Questions
- What are the IFTA quarterly deadlines?
- Q1 (Jan-Mar): April 30. Q2 (Apr-Jun): July 31. Q3 (Jul-Sep): October 31. Q4 (Oct-Dec): January 31. If a deadline falls on a weekend or holiday, the due date extends to the next business day.
- What records do I need for IFTA filing?
- You need: miles traveled by jurisdiction (from ELD, GPS, or trip sheets), fuel purchase receipts showing date, location, gallons, fuel type, and price, and beginning/ending odometer readings for each vehicle for the quarter. Retain all IFTA records for at least 4 years.
- What if I had no miles during a quarter?
- You must still file a zero return. Failure to file, even with no activity, is treated the same as a late filing and incurs the $50 minimum penalty. If you have permanently ceased interstate operations, contact your base jurisdiction to surrender your IFTA license.
- How long do I need to keep IFTA records?
- IFTA records must be retained for a minimum of 4 years from the date the return was due or filed, whichever is later. This includes trip sheets, fuel receipts, ELD/GPS data, and copies of filed returns. Records must be available for audit by any IFTA member jurisdiction.