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How is the value of refinery fuel gas determined?
The value of refinery fuel gas is based on the average of the most recent 36 months of the “Henry Hub” natural gas spot prices, as published by the federal Energy Information Administration (EIA). The 36-month average value is calculated and published by the Department of Revenue on a quarterly basis.
Refinery fuel gas value
2025
- $3.74 per Million Btu - January 1, 2025 through March 31, 2025
2024
- $3.99 per Million Btu – October 1, 2024 through December 31, 2024
- $4.12 per Million Btu - July 1, 2024 through September 30, 2024
- $4.20 per Million Btu - April 1, 2024 through June 30, 2024
- $4.29 per Million Btu - Jan. 1, 2024 through March 31, 2024
2023
- $4.25 per Million Btu - Oct. 1, 2023 through Dec. 31, 2023
Refinery fuel gas use tax rate
The preferential state use tax rates listed below apply to the use of refinery fuel gas only.
- 3.852% - From Jan. 1, 2021, and after.
- 2.889% - From Jan. 1, 2020 through Dec. 31, 2020.
- 1.926% - From Jan. 1, 2019 through Dec. 31, 2019.
- 0.963% - From Jan. 1, 2018 through Dec. 31, 2018.
Tax rate for other self-produced fuels
The standard state use tax rate of 6.5% applies to the use of all other self-produced fuels.
Biomass fuel is exempt from both state and local use tax.
Definitions
Self-produced fuel refers to fuel that is produced by an extractor or manufacturer that also uses the fuel in the same extracting or manufacturing operation.
Biomass fuel means wood waste and other wood residuals, including forest-derived biomass. This definition also includes partially organic by-products of pulp, paper, and wood manufacturing processes. It does not include firewood or wood pellets.
