Alternative Fuels Tax
A state excise tax is imposed on the use of alternative fuels. Alternative fuels include propane and natural gas. The current tax rates are as follows: $0.226 per gallon of propane; $0.247 per gasoline gallon equivalent (GGE) of compressed natural gas; and $0.197 per GGE of liquefied natural gas. No tax is imposed on alternative fuels used by the U.S. government or its agencies (when presented with a valid exemption certificate) or on vehicles used for urban mass transportation of passengers. For more information, see the Wisconsin Department of Revenue Alternate Fuel Tax website.
(Reference Wisconsin Statutes 78.40)