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Haul Math

Iowa IFTA Fuel Tax Rate, 4th Quarter 2024

Iowa's IFTA diesel rate for the 4th quarter of 2024 is $0.3250 per gallon, unchanged from Q3 2024.

Iowa rate for Q4 2024

Special diesel, Q4 2024

$0.3250

per US gallon, unchanged from Q3 2024

Diesel tax rate
$0.3250/gal
Surcharge
None listed
Quarter
Q4 2024, from Oct 1, 2024
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.

Example numbers are filled in. Tap "Calculate Iowa IFTA" to see the Iowa line of an IFTA return at the Q4 2024 rate.

Iowa vs. its neighbors, Q4 2024

IFTA diesel rates for Iowa and bordering jurisdictions, Q4 2024
JurisdictionDiesel + surchargevs. IA
Illinois$0.7570+$0.4320
Wisconsin$0.3290+$0.0040
Iowa$0.3250—
Nebraska$0.2960−$0.0290
Minnesota$0.2850−$0.0400
South Dakota$0.2800−$0.0450
Missouri$0.2700−$0.0550

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

Iowa IFTA diesel rate by quarter
QuarterDieselSurchargeChange
Q1 2024$0.3250——
Q2 2024$0.3250—no change
Q3 2024$0.3250—no change
Q4 2024$0.3250—no change

Source: IFTA, Inc. Fuel Tax Rate Matrix, 4th Quarter 2024 · Effective Oct 1, 2024 · 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.