Tax Brackets 2025 California Flag

Tax Brackets 2025 California Flag. Californians pay the highest marginal state income tax rate in the country — 13.3%, according to tax foundation data. California has nine state income tax rates, ranging from 1% to 12.3%.

Find out below what your california tax rate and standard. Californians pay the highest marginal state income tax rate in the country — 13.3%, according to tax foundation data.