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How much is tax on a gallon of gasoline or diesel fuel?

The amount of taxes you pay on gasoline depend on what state and county you live in. Below is the amount of federal tax as well as the average total state tax for gasoline and diesel fuels as of January 2023.

Federal Taxes:

  • Gasoline: 18.40¢/gallon
  • Diesel: 24.4¢/gallon

Gas Tax State Map