New Ca Gas Tax Increase 2025 Notification. With california set to see another gas tax hike on july 1 to 59.6 cents per gallon, a new tax is potentially on the horizon thanks to california air resources board (carb). In 2025, the state will increase its motor fuel tax on diesel, biodiesel, and gasoline from 28.5 cents per gallon to 31.5 cents per gallon.

California plans to overhaul one of its cornerstone climate programs — a decision that could push gasoline prices higher in a state where residents already pay the most at the. While the new environmental program mean gas prices could go up as much as 47 cents per gallon, the state is looking to toughen its environmental policies ahead of the second trump.