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2026 California Income Tax Guide

Progressive 1%–12.3% ratesHigher portions of California taxable income move through higher brackets.
$5,706 single deductionCalifornia’s 2026 estimated-tax worksheet lists its own standard deductions.
1% tax above $1 millionThe Mental Health Services Tax applies to taxable income over the threshold.
Official Sources California FTB California EDD IRS SSA
California FTB California EDD IRS SSA
Calculate for California

How California taxes work

California taxable incomeCalifornia starts with federal income figures, then uses Schedule CA adjustments and a state deduction to reach California taxable income.
Progressive state bracketsThe calculator moves taxable income through California’s supported brackets instead of applying the top rate to every dollar.
High-income surtaxCalifornia adds a 1% Mental Health Services Tax to taxable income above $1 million, producing a 13.3% top marginal rate.
Residency changes the scopeResidents generally report income from all sources; part-year residents and nonresidents generally report the applicable California-source portion.
California SDI is separateFor supported W-2 wages, the calculator can include 2026 State Disability Insurance at 1.3% with no taxable wage ceiling.

Common California tax questions

Is all California income taxed at 12.3%?No. California uses progressive brackets, so each rate applies only to the portion of taxable income inside that bracket.
Is California’s deduction the same as the federal deduction?No. California publishes separate state deduction amounts; the 2026 estimated-tax worksheet lists $5,706 for single or separate filers.
Does the calculator add a California city income tax?No broad municipal wage income tax is added automatically. Employer payroll taxes and other local obligations can follow different rules.
Is California SDI included in the result?Yes when “Included” is selected under California SDI. The estimate applies the supported 1.3% rate to W-2 wages, including supported spouse wages.
Is this the same as a California tax return?No. It is a planning estimate and does not prepare Form 540 or 540NR or capture every adjustment, credit, alternative tax, and filing rule.