Gas Taxes Set to Rise in California, Washington, Other States
Numerous states adjust the excise tax they charge at the pump annually on July 1. Washington will have the biggest jump at 6 cents per gallon.
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Gasoline taxes will rise July 1 — just ahead of summer driving season — in some of the states that already have some of the highest gas taxes (and prices) in the United States, including California, Illinois and Washington.
Meanwhile, gas taxes will actually decline in two states: Connecticut and Kentucky.
Adjustments to state gas taxes typically happen on Jan. 1 and July 1 each year. State taxes, which pay for road and infrastructure improvements, are layered on top of federal fuel taxes, which are 18.4 cents per gallon for gasoline and 24.4 cents for diesel.
The national average price for regular gasoline, as measured by AAA, is $3.185 per gallon as of June 30, before the new taxes kick in. Average prices vary widely across the country, with a gallon of regular costing $1.88 more in the most expensive state (California) than the cheapest state (Mississippi). The national average price for diesel is $3.694.
Before the newest round of increases, state gasoline taxes average 33.3 cents per gallon.
States where taxes will rise on July 1
Here are some of the states where gas taxes will rise. All gas prices cited are according to AAA and are accurate as of June 30, the day before new taxes take effect.
In Washington State, the per-gallon tax on gasoline is climbing 6 cents, to 55.4 cents from 49.4 cents. Beginning in 2026, the tax will rise another 2% (about a penny) each July 1 to account for inflation.
Also on July 1, the tax on diesel will rise 9 cents to 58.4 cents per gallon. The tax on diesel is scheduled to rise another 3 cents in 2028; beginning that year, the tax will rise another 2% (about a penny) on both gasoline and diesel each July 1 to account for inflation.
Average price for regular: $4.433
Average price for diesel: $4.926
In California, which already has the highest state gas tax in the nation, the excise tax on gasoline will rise another 1.6 cents to 61.2 cents per gallon. This is in addition to sales and use taxes of 2.25% plus 7.5 cents per gallon.
Diesel fuel will climb 1.2 cents to 46.6 cents per gallon. The California adjustments are made annually to account for inflation.
Average price for regular: $4.594
Average price for diesel: $5.110
In Illinois, the fuel tax for regular gasoline will rise 1.3 cents to 48.3 cents per gallon, and the tax for diesel fuel will also rise 1.3 cents to 55.8 cents per gallon.
Average price for regular: $3.470
Average price for diesel: $3.745
Other states implementing changes to their state gas taxes on July 1 include:
Alabama: State excise taxes on gasoline and diesel will rise by 1 cent, to 30 and 31 cents per gallon respectively.
Connecticut: The state’s excise tax on diesel will decline by 3.5 cents to 48.9 cents per gallon.
Kentucky: State excise taxes on both gasoline and diesel will decrease by 1.4 cents, to 25 and 22 cents per gallon respectively.
Minnesota: The fuel excise tax will rise 3.3 cents to 31.8 cents per gallon.
Mississippi: The state excise tax on gasoline will increase by 3 cents to 21 cents per gallon.
Missouri: The fuel tax rate will rise by 2.5 cents per gallon.
Nebraska: Fuel taxes will increase 1.4 cents to 31.8 cents per gallon.
Rhode Island: The state excise tax on gasoline will rise 1 cent to 38 cents per gallon.
Virginia: The gasoline tax will rise 0.9 cents to 31.7 cents per gallon, and the diesel tax will also rise 0.9 cents to 32.7 cents per gallon.
Several states, including Georgia, Hawaii, New Jersey and Vermont, are making changes to the way they charge owners of electric vehicles for use of the roads.