California State Income Tax Brackets 2025 Calculator. The california tax estimator lets you calculate your state taxes for the tax year. The tax information provided here is based on 2025 federal marginal rates and state tax rates.

Estimate your california state tax burden with our income tax calculator. The below state tax rates and brackets, from the california franchise tax board, apply to income you earned in 2023 (reported on your 2023 tax return).