Yes, California has state income tax, and it is one of the highest rates in the country

California taxes income earned by residents and part-year residents at rates ranging from 1% to 13.3%, depending on how much you earn. The state also taxes income from certain nonresidents who work in California. Unlike federal income tax, which uses a standard set of brackets nationwide, California's tax brackets and rates change each year based on inflation adjustments.

The highest tax rate of 13.3% applies only to the top earners — those with taxable income over a certain threshold that shifts annually. Most California residents pay somewhere between 1% and 9.3% on their ordinary income, with an additional 1% Mental Health Tax applied to high earners. This means your actual state tax bill depends on your total income for the year, your filing status, and whether you may have access to for any deductions or credits.

Key Takeaways

  • California's state income tax rates range from 1% to 13.3%, with the highest rate applying only to top earners and adjusted yearly for inflation.
  • You owe California state income tax if you are a resident, a part-year resident, or a nonresident who earned income within the state.
  • California taxes capital gains, investment income, and retirement distributions in addition to wages and salaries.
  • The Franchise Tax Board is the state agency that collects California income tax and processes returns.

Who has to pay California state income tax

You owe California state income tax if you are a resident for the full tax year, meaning you lived in California for more than nine months or had a permanent home there. You also owe it if you are a part-year resident — someone who moved into or out of California during the year. Part-year residents pay tax only on income earned while they were living in the state.

Nonresidents who worked in California also owe state income tax on wages, self-employment income, and certain other income earned within the state, even if they lived elsewhere. Military members stationed in California are treated as nonresidents for tax purposes and do not owe state tax on military pay. If you left California during the year, you will need to file a part-year resident return and report only the income you earned while you were a California resident.

What income California taxes

California taxes wages, salaries, tips, and self-employment income. It also taxes interest, dividends, capital gains, rental income, retirement distributions from IRAs and 401(k)s, and income from partnerships or S corporations. Long-term capital gains — profits from selling assets you held for more than one year — are taxed at the same rates as ordinary income in California, unlike the federal system.

Some types of income are not taxed by California. These include Social Security benefits (with limited exceptions for high earners), certain disability payments, workers' compensation, and life insurance proceeds. If you received income from sources outside California while you were a nonresident, you do not owe California tax on that income. The key is where the income was earned, not where you received the payment.

California tax brackets and rates for the current year

California's tax brackets shift each year. The state publishes updated brackets in the spring for the tax year you are filing. The lowest bracket starts at 1% and applies to the first portion of your taxable income. Each higher bracket applies only to income above the previous threshold, so you do not pay the top rate on all your income — only on the portion that falls into that bracket.

Because brackets change annually, the income threshold that triggers the 13.3% top rate is different each year. For the most current brackets for your filing year, check the Franchise Tax Board website or the tax forms you receive. If you are filing a part-year resident return, your brackets may be different because your income is calculated differently. A tax professional or the Franchise Tax Board can help you determine which brackets apply to your situation.

Deductions and credits that reduce your California tax

California allows a standard deduction based on your filing status, or you can itemize deductions if they total more than the standard amount. The standard deduction also changes each year with inflation. You can deduct mortgage interest, property taxes (up to $10,000 combined with state and local taxes), charitable contributions, and certain other expenses if you itemize.

California also offers tax credits that directly reduce the amount of tax you owe. These include the Earned Income Tax Credit (EITC) for lower-income workers, the Child and Dependent Care Credit, the Renter's Credit, and credits for taxes paid to other states. Some credits are refundable, meaning you receive money back even if you owe no tax. The Franchise Tax Board website lists all available credits and the income limits for each one.

How to file your California state income tax return

You file your California return using Form 540 (the standard return) or Form 540-NR (for nonresidents and part-year residents). You must file by the same deadline as your federal return — usually April 15, though the deadline shifts if that date falls on a weekend or holiday. You can file by mail or electronically through the Franchise Tax Board's website or through tax software that supports California returns.

If you owe money, you can pay when you file or set up a payment plan through the Franchise Tax Board. If you expect a refund, filing electronically usually gets your money back faster than filing by mail. If you cannot file by the deadline, you can request an extension, though this extends only the filing deadline, not the payment deadline — taxes owed are still due by April 15.

What happens if you do not pay or file

If you owe California state income tax and do not pay, the Franchise Tax Board charges penalties and interest on the unpaid amount. The failure-to-pay penalty is typically 0.5% of the unpaid tax per month, up to 25%. Interest accrues daily at a rate set by the state each quarter. If you do not file a return when you are required to, you face an additional failure-to-file penalty.

The Franchise Tax Board can place a lien on your property, garnish your wages, or intercept your state and federal tax refunds to collect unpaid taxes. If you owe a significant amount and cannot pay in full, you can contact the Franchise Tax Board to discuss payment plans or other options. The sooner you address an unpaid tax bill, the less interest and penalties accumulate.

Frequently Asked Questions

Do I have to file a California return if I only lived there part of the year?

Yes, if you earned income while you were a California resident. You file Form 540-NR and report only the income you earned during the months you lived in the state. You must file even if you had no tax withheld or if you expect a refund.

Is Social Security taxed in California?

Social Security benefits are generally not taxed by California. However, if your total income exceeds certain thresholds and you are a high earner, a portion of your benefits may be subject to tax. Check the Franchise Tax Board website or speak with a tax professional if you are unsure whether your benefits are taxable.

What if I moved out of California but still have income from the state?

If you are now a nonresident but earned income in California during the year, you owe California tax only on that California-source income. You file Form 540-NR and report only wages, self-employment income, or other income earned within the state. Income from your new state of residence is not taxed by California.

Can I get an extension to file my California return?

Yes, you can request an extension through the Franchise Tax Board, which typically gives you until October 15 to file. However, an extension to file does not extend the deadline to pay taxes owed — those are still due by April 15. If you owe tax, you should pay by the original deadline to avoid penalties and interest.

Where do I find my California tax brackets for this year?

The Franchise Tax Board publishes updated tax brackets each spring on its website. You can also find them on the tax forms and instructions you receive, or by calling the Franchise Tax Board. Tax software that supports California returns will use the correct brackets for your filing year automatically.