California Income Tax Calculator
2026 brackets, standard deduction, and the $1M surcharge.
Estimated 2026 California income tax
Estimates for planning only, not financial advice.
California taxes income through nine graduated brackets from 1% to 12.3%, plus a 1% surcharge over $1 million, the highest top rate of any state. Enter your income and filing status, and the calculator subtracts the 2026 standard deduction ($5,900 single, $11,800 joint or head of household), applies each bracket only to the income inside it, and adds the mental health surcharge where it applies. A single filer at $100,000 owes about $5,069: a 9.3% marginal rate but only a 5.1% effective rate.
How to Use This Calculator
Enter your California gross income, which for most employees is federal AGI with state adjustments. Pick your filing status: single, married filing jointly (thresholds double), or head of household (its own schedule, slightly more generous than single). Choose the standard deduction or enter your California itemized total. The calculator shows tax by bracket, your marginal rate, your effective rate, and monthly withholding equivalent. Use it for estimated payments, offer comparisons, and move-or-stay math.
Enter gross income and filing status. Start with federal AGI; most adjustments are minor for employees.
Take the standard deduction or enter itemized. Remember California\'s standard deduction is much smaller than the federal one.
Read total tax, marginal rate, and effective rate. Use the marginal rate for raise and bonus decisions, the effective rate for budgeting. Compare against our federal income tax calculator for the combined burden.
2026 California Brackets
Every threshold rose about 3.4% for 2026 inflation indexing; the rates themselves did not change. The 9.3% bracket is famously wide: for single filers it spans $75,197 to $384,109, which is why most upper-middle-class Californians share the same 9.3% marginal rate. Head of household gets its own schedule between single and joint. This calculator models single and joint exactly and head of household with its published 2026 schedule.
Worked Example
Single filer, $100,000 income, standard deduction $5,900, taxable income $94,100. Bracket by bracket: 1% on $11,456 = $114.56; 2% on the next $15,701 = $314.02; 4% on the next $15,704 = $628.16; 6% on the next $16,637 = $998.22; 8% on the next $15,699 = $1,255.92; 9.3% on the final $18,903 = $1,757.98. Total: $5,068.86, about $5,069. Marginal rate 9.3%, effective rate 5.1%, roughly $422 a month in withholding terms. A married couple at the same income takes the $11,800 deduction and doubles the thresholds, paying noticeably less.
What California Taxes Differently
| Item | California treatment |
|---|---|
| Capital gains | Taxed as ordinary income, no preferential rate |
| Social Security benefits | Fully exempt |
| Standard deduction (2026) | $5,900 single / $11,800 joint, far below federal |
| Top marginal rate | 13.3% including the 1% surcharge over $1M |
| Local income taxes | None at the city or county level |
The capital gains rule is the biggest planning lever: with no preferential rate, harvesting losses and timing realizations saves real money in California in a way it does not in most states. The exemption credits ($158 per filer, $491 per dependent in 2026) shave a bit off at the end. And remember this is state tax only: combine it with federal using our federal income tax calculator and paycheck calculator to see the full picture before making any move.
Estimates for planning only, not financial advice.
Frequently Asked Questions
How is California income tax calculated?
California applies nine graduated rates, 1% to 12.3%, to your California taxable income, which is generally your federal AGI minus the state standard deduction or itemized deductions, minus exemption credits. Each rate applies only to income inside its bracket. A single filer earning $100,000 in 2026 subtracts the $5,900 standard deduction, then pays 1% on the first $11,456 of the remaining $94,100, 2% on the next slice, and so on, for a total of about $5,069.
What are the 2026 California tax brackets?
For single filers in 2026: 1% to $11,456; 2% to $27,157; 4% to $42,861; 6% to $59,498; 8% to $75,197; 9.3% to $384,109; 10.3% to $460,927; 11.3% to $768,213; and 12.3% above that. Married filing jointly thresholds are double. Rates did not change for 2026; thresholds rose about 3.4% for inflation. Income over $1 million pays an additional 1% mental health services tax, making the true top rate 13.3%.
What is the California standard deduction for 2026?
For 2026 it is $5,900 for single and married filing separately, and $11,800 for married filing jointly, head of household, and qualifying surviving spouse. That is far below the federal standard deduction, so many Californians itemize federally but take the standard deduction on the state return. California also offers personal exemption credits: $158 per filer ($316 joint) plus $491 per dependent in 2026.
Does California have a separate capital gains tax rate?
No. California taxes capital gains as ordinary income at your marginal bracket rate, unlike the federal system with its preferential 0/15/20% long-term rates. A Californian in the 9.3% state bracket pays 9.3% on long-term gains to the state on top of federal capital gains tax. This is a major planning point: timing gain realizations matters more in California than in almost any other state.
What is the 1% mental health tax in California?
California adds a 1% Mental Health Services Tax on taxable income over $1 million, on top of the 12.3% top bracket, for a combined 13.3% marginal rate. It applies to the portion above $1 million, not the whole income. This gives California the highest top marginal state income tax rate in the nation, and it is a key reason high earners model moves to no-income-tax states carefully.
Do I owe California tax if I work remotely from another state?
California residents owe tax on all income no matter where it is earned. Nonresidents owe California tax only on California-source income, generally wages for days physically worked in California. Moving out mid-year makes you a part-year resident, taxed as a resident for the California portion of the year. California's Franchise Tax Board is famously aggressive about residency audits, so document your move date thoroughly.
How does California tax compare to Texas or Florida?
Texas, Florida, Nevada, Washington, and six other states have no income tax at all, while California's top rate is 13.3%. On $300,000 of income, the state tax gap can exceed $25,000 a year. But the comparison is not just tax: housing, property tax, insurance, and earnings differences often dwarf the income tax gap. Run the full cost-of-living math before moving for tax reasons alone.
Are Social Security benefits taxed in California?
No. California fully exempts Social Security retirement benefits from state income tax, one of the friendlier provisions for retirees. However, other retirement income like 401(k) and pension distributions is taxed as ordinary income. Retirees often find California's treatment of Social Security pleasant and its treatment of everything else less so.
What is the difference between marginal and effective tax rate?
Your marginal rate is the rate on your last dollar of income; your effective rate is total tax divided by total income. Because brackets are graduated, the effective rate is always lower than the marginal rate. In the $100,000 example above, the marginal rate is 9.3% but the effective state rate is about 5.1%. Quote marginal rates for decisions about earning more, and effective rates for describing your overall burden.
When are California taxes due?
California returns are due April 15, with an automatic 6-month extension to file until October 15. The extension covers filing only; any tax owed is still due April 15 to avoid penalties and interest. Quarterly estimated payments follow the federal schedule: April 15, June 15, September 15, and January 15. California requires 30% of estimated tax by the first quarter installment, which is front-loaded compared to the federal 25%.