Alternative Fuel Tax

Alternative fuels used as vehicle fuel are taxed as follows:

  • Compressed natural gas is subject to the state fuel excise tax of $0.31 per gasoline gallon equivalent, measured at 5.66 pounds (lbs.) or 126.67 cubic feet at a base temperature of 60 degrees Fahrenheit and a pressure of 14.73 lbs. per square inch;
  • Liquefied natural gas is subject to the excise tax of $0.325 per diesel gallon equivalent (DGE), measured at 6.06 lbs.;
  • Propane is subject to the excise tax of $0.30 per gallon;
  • E85 is subject to the excise tax of $0.290 per gallon;
  • Hydrogen is subject to the excise tax of $0.65 per DGE, measured at 2.49 lbs.; and
  • Electricity is subject to the excise tax of $0.026 per kilowatt-hour of fuel delivered or placed into a battery or other energy storage device of an electric motor vehicle at any location in Iowa other than a residence.
(Reference House File 767, 2019, and Iowa Code 452A.2 and 452A.86)