Disclaimer

Last updated: March 2026

⚠️ Important Disclaimer: The information and calculations provided by IFTACalculators.com are for informational and estimation purposes ONLY. This is NOT tax advice, legal advice, or a substitute for official IFTA filing. Always verify current rates and consult qualified professionals before filing your official IFTA return.

General Disclaimer

IFTACalculators.com ("Site") provides a free IFTA fuel tax estimator and related educational content. All information, calculations, and content on this Site are provided for informational and estimation purposes only. Nothing on this Site should be construed as professional tax advice, legal advice, accounting advice, or any other form of professional advice.

Calculation Accuracy

While we make every reasonable effort to ensure that the calculation logic and tax rates on this Site are accurate and current, we cannot guarantee absolute accuracy. Specifically:

Tax rates change quarterly — IFTA fuel tax rates are updated every quarter by individual jurisdictions. Rates shown on this Site may not reflect the most current rates at time of use.
Special rules vary by state — Some states have complex rules, special vehicle exemptions, or additional taxes not fully represented in this calculator.
Currency conversion — Canadian provincial rates involve CAD/USD conversion and liter/gallon conversion not automatically applied by this calculator.
Fuel type variations — Different fuel types (LNG, CNG, propane, ethanol) have different rates not all covered by this calculator.

Not a Filing Service

Results from this calculator are estimates only and should not be used directly to complete or file an official IFTA quarterly return. You must file your official IFTA return through your base state's motor carrier portal or authorized filing system. The numbers produced by this calculator serve as a planning and verification tool — always cross-check against official state rates.

Official Sources

For official, authoritative IFTA information, always use these sources:

IFTA, Inc. — Official IFTA administrator: iftach.org
Your base state's DMV or DOT — For state-specific filing instructions and portals
A qualified tax professional — For complex situations, audits, or multi-vehicle fleets

No Affiliation with Government

IFTACalculators.com is an independent website. We are not affiliated with, endorsed by, or connected to IFTA, Inc., any US state DMV, any state Department of Transportation, the Federal Motor Carrier Safety Administration (FMCSA), or any other government agency. Use of the term "IFTA" is purely descriptive.

Limitation of Liability

IFTACalculators.com, its owners, and contributors shall not be liable for any tax penalties, interest charges, fines, filing errors, or any other damages arising from your use of or reliance on the calculations, information, or content provided by this Site. You use this Site entirely at your own risk.

Tax Rates Update Schedule

We aim to update IFTA tax rates following each quarterly publication by IFTA, Inc. However, we cannot guarantee that rates are current at any given time. The current rates shown are based on the Q1 2026 IFTA tax rate matrix. Always verify at iftach.org before filing.