California has the highest top income tax rate in the United States at 13.3%, but most residents pay effective rates between 4% and 8%. The state uses a progressive system with 10 brackets, meaning only income above $1 million is taxed at the highest rate. California's standard deduction is $5,540 for single filers — much lower than the federal standard deduction. Enter your income below to estimate both your federal and California state tax.

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2025 California Tax Brackets

California has one of the most complex state tax systems in the country with 10 separate tax brackets. The rates range from 1% on the first $10,412 of taxable income to 13.3% on income above $1 million (including the 1% Mental Health Services Tax). These brackets apply to the 2025 tax year, which you file on your 2026 California return (Form 540).

Single Filer Brackets

Tax RateTaxable Income Range
1%$0 – $10,412
2%$10,412 – $24,684
4%$24,684 – $38,959
6%$38,959 – $54,081
8%$54,081 – $68,350
9.3%$68,350 – $349,137
10.3%$349,137 – $418,961
11.3%$418,961 – $698,271
12.3%$698,271 – $1,000,000
13.3%Over $1,000,000

The practical impact of this progressive system means that a single filer earning $80,000 in California taxable income would owe approximately $3,650 in state tax — an effective rate of about 4.6%, far below the marginal rate of 9.3% that applies to their top bracket.

California Deductions

California allows taxpayers to choose between a standard deduction and itemized deductions, similar to the federal system but with different amounts and rules.

The California standard deduction for 2025 is $5,540 for single filers and head of household, and $11,080 for married filing jointly. These amounts are significantly lower than the federal standard deduction ($15,000 single), which means more of your income is subject to California state tax even if you take the standard deduction on your federal return.

California itemized deductions largely mirror federal itemized deductions but with some important differences. California does not allow a deduction for state income taxes paid (since that would be circular). California does not conform to all federal provisions — for example, some federal deductions introduced by the One Big Beautiful Bill Act (like the tip income deduction) may not be recognized by California. Always check the latest FTB guidance for conformity status.

California Tax Credits

California offers several state-specific tax credits that can significantly reduce your state tax bill.

California Earned Income Tax Credit (CalEITC) is a refundable credit for qualifying low-income workers with earned income up to $30,950. The credit amount varies by number of qualifying children, reaching up to approximately $3,529 for families with three or more children. CalEITC is claimed in addition to the federal EITC — qualifying taxpayers can receive both credits.

Young Child Tax Credit (YCTC) provides up to $1,117 for qualifying families with a child under age 6. This credit is available to CalEITC-eligible families and is fully refundable.

Renter's Credit is a nonrefundable credit of $60 for single filers or $120 for married filing jointly for qualifying California renters. To qualify, your AGI must be below $50,746 (single) or $101,492 (married filing jointly), and you must have rented your principal residence in California for the full year.

Dependent Parent Credit provides $1,000 for taxpayers who maintain a household that includes a parent who can be claimed as a dependent.

Tax Calculation Examples

These examples show how California state tax is calculated for common income levels, helping you understand what to expect before using the calculator.

Gross IncomeFiling StatusCA Taxable IncomeCA State TaxEffective Rate
$40,000Single$34,460$7451.9%
$65,000Single$59,460$2,2833.5%
$85,000Single$79,460$3,7844.5%
$120,000Married Jointly$108,920$3,5202.9%
$200,000Married Jointly$188,920$9,3404.7%

California vs Federal Tax Comparison

California residents face a combined federal and state tax burden that is among the highest in the nation. Understanding how the two systems interact helps with financial planning.

FeatureFederalCalifornia
Number of brackets710
Lowest rate10%1%
Highest rate37%13.3%
Standard deduction (single)$15,000$5,540
Social Security taxed?Up to 85%Not taxed
Retirement incomeGenerally taxableGenerally taxable
Capital gainsPreferential rates (0/15/20%)Taxed as ordinary income

One significant difference is how California treats capital gains. The federal government taxes long-term capital gains at preferential rates of 0%, 15%, or 20%. California, however, taxes all capital gains — both short-term and long-term — as ordinary income. This means a California resident selling stock could pay up to 13.3% in state tax on the gain in addition to federal capital gains tax.

Filing Your California Return

California state tax returns are filed using Form 540 (California Resident Income Tax Return). The filing deadline matches the federal deadline — April 15, 2026 for the 2025 tax year. California automatically grants a six-month extension to file (no form needed), but any tax owed is still due by April 15 to avoid penalties and interest.

You can file your California return through CalFile (the state's free online filing system available at ftb.ca.gov), commercial tax software that supports California returns, or a tax professional. Refunds from the Franchise Tax Board are typically processed within 2-3 weeks for e-filed returns.

Frequently Asked Questions

California uses a progressive income tax system with 10 brackets ranging from 1% to 13.3%. The 13.3% top rate applies to income above $1 million and includes an additional 1% Mental Health Services Tax. Most California residents pay effective rates between 4% and 8% depending on their income level.

The California standard deduction for 2025 is $5,540 for single filers and $11,080 for married filing jointly. This is significantly lower than the federal standard deduction, which means more of your income is subject to state tax.

No. California does not tax Social Security benefits. This is a significant advantage for retirees living in California, as the federal government may tax up to 85% of Social Security income depending on total income.

CalEITC is a state credit for low-income workers earning up to $30,950. The maximum credit varies by number of qualifying children, reaching up to approximately $3,529 for families with three or more children. CalEITC is in addition to the federal EITC — you can claim both.

Yes. California offers a nonrefundable Renter's Credit of $60 for single filers or $120 for married filing jointly for qualifying renters. To qualify, you must have been a California resident for the full year, rented a property as your principal residence, and your AGI must be below $50,746 (single) or $101,492 (married filing jointly).

California state tax is calculated by taking your California-adjusted gross income, subtracting the California standard deduction ($5,540 single) or California itemized deductions, then applying the progressive bracket rates from 1% to 13.3% to each portion of your taxable income. Our calculator above performs this calculation automatically using official FTB bracket data.

The Mental Health Services Tax is an additional 1% tax on taxable income exceeding $1 million. It was enacted through Proposition 63 in 2004 to fund community mental health programs. This brings the effective top rate for high earners in California to 13.3% (12.3% top bracket + 1% mental health tax).

Yes, if you itemize deductions on your federal return. Under the One Big Beautiful Bill Act, you can deduct up to $40,000 in state and local taxes (SALT), which includes your California income tax and property taxes. This is a significant improvement from the previous $10,000 cap.

K
Krishn
Founder & Lead Tax Content Strategist

Krishn is the founder of TaxCalcHQ, where he oversees the accuracy of all tax calculators. All content is sourced from official IRS publications and verified against professional tax software. Read more →