Not only does Oklahoma have the lowest gasoline prices in the nation, its tax on gasoline is among some of the lowest in the country. Not the lowest, but among the lowest.

While California drivers pay the highest at 70.9 cents per gallon as of January 1, 2026, Oklahoma’s tax is 19 to 20 cents a gallon. A new report from the U.S. Energy Information Administration found that Alaska’s 9 cents a gallon tax is the lowest nationwide.

The average tax in the nation is 33.5 cents a gallon which represents a slight increase from last year’s average.

Oklahoma’s gas tax is used to fund part of the state’s funding for road maintenance. Its tax on diesel fuel is 13 cents per gallon.

The EIA compiles this information twice a year by collecting tax and fee information as of January 1 and July 1, as those dates align with the timing of many states’ changes in taxes. Twenty-six states have changed their gasoline taxes between the first day of 2025 and the first day of 2026, with 19 states raising taxes and 7 states lowering taxes. Two notable changes included Michigan’s tax increase of 20.8 c/gal and Washington state’s increase of 6.2 c/gal. All other states’ gasoline tax changes were within 5 c/gal of their January 1, 2025 value.

The EIA also publishes state-level diesel taxes and fees, which ranged from a high of 87.3 c/gal in California to a low of 9 c/gal in Alaska and averaged 35.9 c/gal across all states. These state taxes do not include the federal gasoline tax of 18.4 c/gal and federal diesel tax of 24.4 c/gal, which have remained unchanged since October 1993.

Consumers in California often pay among the highest prices for gasoline in the United States. In addition to excise taxes and other fees, California requires a special blend of gasoline that requires more processing steps and more expensive blending components but is intended to alleviate air quality issues associated with gasoline consumption.