Last updated: May 2026 · Texas IFTA rates current for Q1–Q4 2026
Texas · 20.0¢/gal · Low Tax State

Texas IFTA Calculator 2026 — Diesel Tax Rate & Filing

Texas has one of the lowest diesel tax rates in the US at 20.0¢ per gallon. Calculate your IFTA fuel tax liability for Texas routes and compare to neighboring states.

Calculate Your Texas IFTA Tax

Texas IFTA Rates & Trucking Overview 2026

Texas's diesel fuel tax rate of 20.0 cents per gallon is one of the most favorable in the country. Only Oklahoma and Missouri consistently match or beat it among states with significant trucking volume. For IFTA purposes, every gallon you consume in Texas is taxed at this rate — and because the rate is low, fueling in Texas almost always works in your favor vs. reimbursing at a higher-rate state's rate.

Texas handles more interstate freight movement than any other state — not just because of its size, but because of its position as the NAFTA corridor to Mexico. The Dallas-Fort Worth metroplex is the #2 freight market in the US after Los Angeles. Houston is a top-5 port city and home to the nation's largest petrochemical freight complex.

Major Texas Trucking Routes

I-35 (NAFTA Corridor): Laredo–San Antonio–Austin–Dallas–Oklahoma City. Highest truck volume in Texas, especially around Laredo/Nuevo Laredo border crossings.
I-10 (East-West Spine): El Paso–San Antonio–Houston–Louisiana border. Major petrochemical, port, and intermodal freight corridor.
I-20: Midland/Odessa oilfield freight through Dallas east to Shreveport, LA.
I-45: Houston–Dallas, heavy chemical plant and port-related freight.

Texas IFTA — Frequently Asked Questions

What is the Texas IFTA diesel tax rate in 2026?
The Texas IFTA diesel tax rate for 2026 is 20.0 cents per gallon — one of the lowest among all 48 IFTA states. Only Oklahoma (19.0¢) and Missouri (19.0¢) come in lower among major trucking states. Pennsylvania is the highest at 74.1¢.
Does Texas require IFTA registration?
Yes. Any commercial motor vehicle operating in Texas and at least one other IFTA jurisdiction must register for IFTA through the Texas DMV Motor Carrier Division. You receive a Texas IFTA license and two decals per qualifying vehicle annually.
Is it worth fueling up in Texas vs neighboring states?
Texas at 20.0¢/gal is lower than Arkansas (28.5¢), New Mexico (22.9¢), and Louisiana (20.0¢ — equal). Oklahoma at 19.0¢ is slightly lower but the savings per tank are minimal (~$0.50 on 100 gallons). Texas is generally one of the best states to fuel up in.
How do I file IFTA if I'm based in Texas?
Texas-based IFTA carriers file quarterly returns online at TxDMV.gov. Due dates: Q1 (Jan–Mar) April 30, Q2 (Apr–Jun) July 31, Q3 (Jul–Sep) October 31, Q4 (Oct–Dec) January 31, 2027. Late filing penalties start at $50 or 10% of net tax due, whichever is greater.
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