California Tax Calculator — 2024 State Income Tax
Estimate California state income tax for tax year 2024. Enter your gross income, filing status and any itemized deductions to see your taxable income, CA income tax, SDI, effective rate and after-tax take-home — California only, federal tax not included.
$
Filing status
$
%
CA income tax + SDI. Does not include federal tax.
$3,698.04
state taxTake-home
95.1%
CA income tax
3.8%
SDI
1.1%
How does this calculator work?
California 2024 state income tax is progressive (1%–13.3%). Subtract the standard deduction ($5,540 single / $11,080 joint) from gross income, apply the brackets, then subtract the exemption credit ($144 single). Add 1.1% SDI (no wage cap from 2024) to get your total CA state tax burden.
Formula
How this is calculated
California uses a progressive income tax with ten brackets ranging from 1% to 13.3% (the 13.3% rate includes a 1% Mental Health Services Tax on income over $1,000,000). The 2024 bracket thresholds are inflation-adjusted each year by the CA Franchise Tax Board. Taxpayers subtract either the standard deduction ($5,540 single; $11,080 joint in 2024) or their total itemized deductions — whichever is higher — before applying the brackets. A personal exemption credit ($144 single; $288 joint) is then subtracted directly from the tax owed.
In addition, California imposes State Disability Insurance (SDI) on all wages. Beginning in 2024, the SDI rate is 1.1% with no wage cap — previously the rate was lower and applied only up to a ceiling. SDI funds the state's paid-family-leave and disability programs and is separate from income tax.
This calculator covers California state taxes only — it does not include federal income tax, Social Security, Medicare, local taxes, or any credits beyond the basic personal exemption credit. Capital gains, pass-through business income, and alternative minimum tax are not modelled. Always verify results against the official CA FTB tables or with a tax professional.
Frequently asked questions
No — California does not offer preferential capital-gains rates. Long-term capital gains are taxed as ordinary income at the same progressive rates (up to 13.3%). This is significantly higher than federal rates (0%, 15%, or 20% for long-term gains), making California one of the highest combined capital-gains tax states.
Individuals with taxable income over $1,000,000 pay an additional 1% on the excess — the Mental Health Services Tax under Proposition 63 (2004). This is factored into the 13.3% top marginal rate shown in this calculator.
Yes — SDI (California State Disability Insurance) is a mandatory state tax and is deductible as a state and local tax on your federal Schedule A if you itemize deductions federally. It does not reduce California taxable income (only federal deductibility applies). The SALT deduction cap of $10,000 on federal returns may limit this benefit.
TG we-Calculate Editorial Team. (2026). California Tax Calculator — 2024 State Income Tax [Online calculator]. TG we-Calculate. https://we-calculate.com/calculator/california-tax-calculator
TG we-Calculate Editorial Team. "California Tax Calculator — 2024 State Income Tax." TG we-Calculate. 2026. https://we-calculate.com/calculator/california-tax-calculator.
TG we-Calculate Editorial Team, "California Tax Calculator — 2024 State Income Tax," TG we-Calculate, 2026. [Online]. Available: https://we-calculate.com/calculator/california-tax-calculator
@misc{wecalculate_california_tax_calculator, title = {California Tax Calculator — 2024 State Income Tax}, author = {{TG we-Calculate Editorial Team}}, howpublished = {\url{https://we-calculate.com/calculator/california-tax-calculator}}, year = {2026}, note = {TG we-Calculate} }
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