What is the current diesel price in Iowa?

The current diesel price in Iowa is $4.99 per gallon as of July 28, 2026, according to AAA Gas Prices daily state diesel averages. This is $0.14 below the US national average of $5.13/gal. Iowa ranks #11 of 50 states by diesel price.

What is the diesel tax in Iowa?

Iowa's state diesel tax is 32.5 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 Iowa is 56.9 cents (11% of the retail price).

Updated July 28, 2026 - AAA daily average

Diesel Cost per Gallon in Iowa (2026)

$4.99/GAL

-0.14 vs US average ($5.13)Rank #11 of 50 statesPADD 2

Diesel Tax Breakdown

Federal diesel excise tax24.4c/gal

Iowa state diesel tax32.5c/gal

Total tax56.9c/gal

Tax as % of price11%

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

Nearby States Comparison

$5.10+0.11

$5.06+0.07

$5.21+0.22

$4.84-0.15

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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