What is the current diesel price in Texas?

The current diesel price in Texas is $4.98 per gallon as of July 28, 2026, according to AAA Gas Prices daily state diesel averages. This is $0.15 below the US national average of $5.13/gal. Texas ranks #10 of 50 states by diesel price.

What is the diesel tax in Texas?

Texas's state diesel tax is 20 cents per gallon. Combined with the federal diesel tax of 24.4 cents per gallon, the total tax burden on a gallon of diesel in Texas is 44.4 cents (9% of the retail price).

Updated July 28, 2026 - AAA daily average

Diesel Cost per Gallon in Texas (2026)

$4.98/GAL

-0.15 vs US average ($5.13)Rank #10 of 50 statesPADD 3

Diesel Tax Breakdown

Federal diesel excise tax24.4c/gal

Texas state diesel tax20.0c/gal

Total tax44.4c/gal

Tax as % of price9%

Sources: Federation of Tax Administrators, EIA. Rates as of April 2026.

Nearby States Comparison

$5.13+0.15

$4.74-0.24

$4.95-0.03

$5.00+0.02

Why Diesel Costs $4.98/Gal in Texas

Texas is consistently among the cheapest states for diesel fuel. The Gulf Coast refining complex - centered on the Houston Ship Channel - is the largest in the US and the world, processing over 5 million barrels per day of crude. Texas also has a low state diesel tax of just 20 cents per gallon, well below the national average. High interstate freight density (I-10, I-20, I-35, I-40 all cross Texas) creates intense retail competition among truck stops, driving cash prices down. Owner-operators and fleet dispatchers in the Sunbelt heavily route through Texas for fueling when deadhead or repositioning allows.

CALCULATE YOUR FUEL COST IN TEXAS

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Sources: State diesel average from AAA Gas Prices (gasprices.aaa.com), July 28, 2026; US average and PADD context from the EIA Weekly On-Highway Diesel Fuel Survey (July 20, 2026); state tax from the Federation of Tax Administrators diesel tax table. State prices are representative averages; actual pump prices vary by retailer and location.

- US Average - All States - Trip Calculator - Diesel vs Gas - Fleet Cards