Find answers to common questions about IFTA reporting and our calculator. Can't find what you're looking for? Check out our guides for more detailed information.
IFTA (International Fuel Tax Agreement) is an agreement among US states (except Alaska and Hawaii) and Canadian provinces to simplify fuel tax reporting for motor carriers operating in multiple jurisdictions. Instead of filing separate fuel tax returns in each state or province you travel through, you file one quarterly return with your base jurisdiction.
You need an IFTA license if you operate a qualified motor vehicle (over 26,000 lbs or having 3+ axles) in two or more IFTA jurisdictions. This includes most commercial trucking operations that cross state or provincial lines.
IFTA returns are due quarterly: Q1 (Jan-Mar) due April 30, Q2 (Apr-Jun) due July 31, Q3 (Jul-Sep) due October 31, Q4 (Oct-Dec) due January 31. If the due date falls on a weekend or holiday, the deadline is the next business day.
Late filing can result in penalties of $50 or more per month, plus interest on any taxes owed. Repeated late filing may result in license revocation. It's always better to file on time, even if you need to amend later.
Yes! Our basic calculator is completely free and always will be. You can calculate your quarterly IFTA taxes, generate reports, and download PDFs without paying anything. We may offer premium features in the future, but the core calculator will remain free.
No. You can use the calculator immediately without creating an account. Your data is stored in your browser. However, creating a free account allows you to save your data across devices and sessions, and access your history from anywhere.
Our tax rates are sourced from IFTACH.org (International Fuel Tax Association) and are updated quarterly when new rates are published. We display the effective date on our Tax Rates page so you always know which rates you're using.
Our calculator is designed for estimation and planning purposes. While we strive for accuracy, you should always verify your calculations with your accountant or base jurisdiction before filing your official IFTA return. We are not responsible for any errors in official filings.
You need to track the miles driven in each state or province. Many truckers use ELD (Electronic Logging Device) data, GPS tracking, or manual trip logs. Enter the total miles for each jurisdiction in our calculator, and we'll handle the tax calculations.
Taxable gallons are calculated based on your miles divided by your MPG - this is how much fuel you theoretically used in each state. Tax-paid gallons are the actual gallons you purchased (and paid tax on) in each state. The difference determines if you owe tax or get a credit.
Yes. If you use the calculator without an account, your data stays in your browser's local storage and never leaves your device. If you create an account, your data is encrypted and stored securely. We never sell or share your personal information.
Yes! IFTA Miles is fully responsive and works on smartphones, tablets, and desktop computers. You can enter your trips and fuel purchases from anywhere.
Yes. You can download your quarterly report as a PDF, which includes all your trips, fuel purchases, and calculated taxes. Account holders can also export their complete data history.
IFTA Miles works on all modern browsers including Chrome, Firefox, Safari, and Edge. We recommend keeping your browser updated for the best experience.
Disclaimer: The information provided here is for general guidance only. IFTA regulations may vary by jurisdiction. Always consult with your base jurisdiction or a qualified tax professional for specific advice.