Rates preloaded: 4th Quarter 2026 (Oct 1 – Dec 31), from the IFTA, Inc. tax matrix updated 10/21/2026. Return due Feb 2, 2027 (Jan 31 falls on a Sunday).
Not tax advice. This is an estimating tool only. Rates come from the IFTA, Inc. matrix, which is not final until Dec 4, 2026 and can change. Your base jurisdiction's return and official rates control. Verify every number before you file, and talk to a tax pro or your base-state IFTA office if you're unsure.
Fuel:
Jurisdiction
Total miles
Taxable miles
Tax-paid gallons bought
Rate $/gal
Net tax (+due / −credit)
Add the states you drove in.
Close every quarter in 20 minutes. The IFTA Quarter Closer Kit is an Excel workbook with every jurisdiction's rate filled in, trip & fuel logs that roll up automatically, a surcharge-aware tax summary, an MPG check, and a quick-start PDF. Get the kit ($24)
How it works
Fleet MPG = total miles (all jurisdictions) ÷ total gallons (all fuel bought).
Taxable gallons per state = taxable miles ÷ fleet MPG.
Net taxable gallons = taxable gallons − tax-paid gallons you bought in that state.
Net tax = net taxable gallons × the state's rate. Negative = credit.
Kentucky and Virginia also charge a surcharge on taxable gallons with no credit for fuel bought there — the tool adds those lines automatically.
FAQ
Which quarter is this? Q4 2026 (October–December). Rates are refreshed each quarter from iftach.org.
Why is Oregon $0? Oregon taxes heavy trucks through its weight-mile tax, not IFTA fuel tax. Still report Oregon miles so your MPG is right.
Why is Alberta $0? Alberta suspended fuel tax Oct 1 – Dec 31, 2026. You still report Alberta miles and fuel.
Are Canadian rates converted? Yes — rates shown are the IFTA matrix's U.S. $/gallon figures (exchange rate 1.4023). Enter miles and U.S. gallons.
Do you file for me? No. We don't file returns or give tax advice. File with your base jurisdiction.
Is my data saved? Everything runs in your browser; nothing is sent anywhere.
Source: IFTA, Inc. 4Q2026 Tax Matrix. Not affiliated with IFTA, Inc. or any government agency. Not tax, legal or accounting advice.