Iowa IFTA Fuel Tax Rate, 2nd Quarter 2026
Iowa's IFTA diesel rate for the 2nd quarter of 2026 is $0.3250 per gallon, unchanged from Q1 2026.
Iowa rate for Q2 2026
Special diesel, Q2 2026
$0.3250
per US gallon, unchanged from Q1 2026
- Diesel tax rate
- $0.3250/gal
- Surcharge
- None listed
- Quarter
- Q2 2026, from Apr 1, 2026
- Change vs last quarter
- unchanged
Notes from the source
Matrix footnote #25 (IOWA): LNG is measured in Diesel Gallon equivalents of 6.06 pounds of liquefied natural gas and CNG is measured in Gasoline Gallon equivalents of 126.67 cubic feet. Methanol is not subject to Iowa fuel taxes unless blended with other motor fuels for use in an aircraft or for propelling motor vehicles. Hydrogen fuel will have a tax rate of $0.65 per gallon beginning January 1, 2020. The gallon of hydrogen is based on the diesel gallon equivalent or 'dge', and is two and forty-nine hundredths pounds. Effective July 1, 2023, Iowa has an Electric Fuel Tax Rate of two and six-tenths cents for each kilowatt hour ($0.026 per kWh) of electric fuel dispensed into an EV battery or energy storage device. This does not apply to electric fuel dispensed at residences.
Worked example: the Iowa line of your IFTA return
Change the numbers to match your quarter. Prefilled with 10,000 total miles on 1,550 gallons, 1,200 of those miles in Iowa, and 100 gallons bought there.
Iowa vs. its neighbors, Q2 2026
| Jurisdiction | Diesel + surcharge | vs. IA |
|---|---|---|
| Illinois | $0.7380 | +$0.4130 |
| Wisconsin | $0.3290 | +$0.0040 |
| Minnesota | $0.3260 | +$0.0010 |
| Iowa | $0.3250 | — |
| Nebraska | $0.3180 | −$0.0070 |
| Missouri | $0.2950 | −$0.0300 |
| South Dakota | $0.2800 | −$0.0450 |
On an IFTA return, a higher rate doesn't mean you pay more overall. Fuel you buy in a high-rate state earns a bigger credit. What matters is where you burn the fuel versus where you buy it.
Iowa rate, last 4 quarters
Source: IFTA, Inc. Fuel Tax Rate Matrix, 2nd Quarter 2026 · Effective Apr 1, 2026 · Last verified Sep 28, 2026
IFTA, Inc. publishes the rates each member jurisdiction reports. Iowa's tax agency is the final word on its rate.
Estimates for planning. Confirm with your tax pro or your base jurisdiction's IFTA office before filing.