Current Fuel Tax Rates

The taxation rates for gasoline, aviation fuels, undyed diesel, dyed diesel, and compressed and liquified natural gas are found in W. S. 39-17-104, 39-17-204 and 39-17-304. 

Fuel type

License Tax

Additional License Tax

Total Tax

Gasoline/Gasohol/Propane/Compressed Natural Gas

$ 0.23  

$ 0.01

$ 0.24

Aviation Gas/Jet Fuel

$ 0.04

$ 0.01

$ 0.05

Undyed Diesel/Kerosene/Biodiesel Blend/Liquified Natural gas

$ 0.23

$ 0.01

$ 0.24

Dyed Diesel/Dyed Kerosene/Dyed Biodiesel Blend 

$ 0.00

$ 0.01

$ 0.01


Effective April 1, 2014, the License Tax on Compressed Natural Gas and Liquified Natural Gas will be $0.23 for a Total Tax of $0.24. Compressed natural gas will be taxed by gasoline gallon equivalent (GGE) and Liquified Natural Gas will be taxed by diesel gallon equivalent (DGE).

Effective July 1, 2015, LPG will be taxed on the equivalency of 1.35 gallons of LPG equals 1 gallon of gasoline.