New excise tax rates on gasoline and diesel fuel are announced for California. The CA Dept. of Tax and Fee Administration (CDTFA) announced that the adjusted excise tax rates for gasoline (motor vehicle fuel) and diesel fuel for the period of July 1, 2021, through June 30, 2022. The tax rate will be 51.1 cents per gallon (up from 50.5 cents per gallon through June 30, 2021). The excise tax rate on diesel fuel will be 38.9 cents per gallon (up from 38.5 cents per gallon through June 30, 2021). For the same period, aircraft jet fuel will remain at 2 cents per gallon, and for aviation gasoline will remain at 18 cents per gallon.