What is the tax on CNG in US?
As of March 2000 (NGVC latest survey of CNG prices) in the US a liter of regular grade gasoline cost on average 39.9 cents, of which 11.1 cents was state (6.3) and federal (4.8) tax. A leq of CNG cost 25.4 cents of which about 7.8 cents was state (6.3) and federal (1.5) tax. Note that state tax on CNG is an educated guess. Most states charge about the same tax on CNG as they do on gasoline, and some charge less, but we don’t actually have a state-by-state breakdown. At the present time, there are no proposals to change the federal tax on CNG, although the Natural Gas Vehicle Coalition are supporting efforts to provide tax credits to the users of various alternative fuels.