California Gas Tax Increase July 2025 India. The excise tax on diesel. The recent 2024 legislative and regulatory actions taken by california could result in a cumulative increase in the price of regular grade gasoline for the california consumer of $0.55 to $0.898 a gallon in 2025.
The only definitive price increase at the pump this year will be california’s gas tax, which goes up by about 2 cents on july 1. California’s gasoline excise tax will increase by 2 cents a gallon starting july 1, but one local lawmaker is asking the state to stop the increase.