Compressed Natural Gas (CNG) and Propane Tax

CNG and propane used in motor vehicles is subject to a state motor fuel tax rate of $0.26 per gasoline gallon equivalent (GGE). For taxation purposes, one GGE is equal to 126.67 standard cubic feet of natural gas and 35.97 cubic feet of propane. (Reference Connecticut General Statutes 12-458, and Special Notice 2014-2)