California (CA) Paycheck Calculator

California has nine income tax brackets plus a 1% Mental Health Services surtax on income above $1,000,000. For single filers, the rates are: 1% (up to $11,079), 2% ($11,079–$26,264), 4% ($26,264–$41,452), 6% ($41,452–$57,542), 8% ($57,542–$72,724), 9.3% ($72,724–$371,479), 10.3% ($371,479–$445,771), 11.3% ($445,771–$742,953), 12.3% ($742,953–$1,000,000), and 13.3% above $1,000,000. The bracket thresholds are inflation-adjusted annually by the FTB. Source: California FTB (ftb.ca.gov).

The California standard deduction for 2025/2026 is $5,706 for single and married filing separately filers, and $11,412 for married filing jointly and head of household filers. California's standard deduction is much lower than the federal standard deduction and is set by statute with annual inflation adjustments. Source: California FTB, Form 540.

The 13.3% rate is the combination of California's 12.3% top bracket rate plus the 1% Mental Health Services Tax (MHST) enacted by Proposition 63 in 2004 and extended by Proposition 1 in 2024 (now the Behavioral Health Services Act). The MHST applies to all California taxable income in excess of $1,000,000 for any filing status, making California the state with the highest top marginal individual income tax rate in the United States.

Yes. California State Disability Insurance (SDI) is a separate payroll tax withheld by the California EDD. The 2026 SDI rate is approximately 0.9% of taxable wages with no cap. SDI is NOT included in this calculator's estimate — your actual California paycheck will be reduced by an additional SDI withholding amount on top of the state income tax shown here.

Yes. California taxes California Adjusted Gross Income (CA AGI), which approximates federal AGI for W-2 employees. Pre-tax 401(k) contributions reduce federal AGI and therefore CA AGI. On a $100,000 salary, a 6% 401(k) contribution reduces CA taxable income by $6,000, saving approximately $558 in California income tax ($6,000 × 9.3% marginal rate).

This calculator uses the IRS Publication 15-T percentage method (annualized wages, post-2020 W-4). Your annual salary is reduced by any pre-tax deductions you enter, then by the federal standard deduction for your filing status. The resulting federal taxable income is run through the 2026 federal income tax brackets to get the annual withholding, which is divided by your pay periods.

Social Security is 6.2% of your gross wages up to the 2026 wage base of $184,500. Medicare is 1.45% of all wages with no cap. High earners (above $200,000 for single filers, $250,000 for married filing jointly) also owe an Additional Medicare surtax of 0.9% on wages above that threshold. These are the employee shares; your employer pays a matching amount separately.

Yes. Traditional 401(k) contributions reduce your federal taxable income (and therefore your federal income tax withholding). They also reduce the tax base in most states, including California. Roth 401(k) contributions are post-tax and do not reduce current-year tax.

This calculator covers federal income tax, FICA (Social Security + Medicare), and California state income tax. It does not include: Excludes California SDI (State Disability Insurance, ~0.9% of gross wages, withheld separately by EDD). Figures use the 2025 FTB bracket schedules as the best available proxy for 2026 withholding; the FTB may publish updated 2026 thresholds that differ slightly. It is an estimate for budgeting purposes — your employer's actual payroll system and your W-4 elections determine your exact withholding.

Your marginal tax rate is the rate that applies to your last dollar of income (the highest bracket you fall into). Your effective tax rate is your total taxes divided by your gross salary — it is always lower than your marginal rate because lower income is taxed at lower bracket rates. The effective rate shown here includes federal income tax, FICA, and state income tax.