Yes, California has a state income tax, and it applies to most people who live or work there

California taxes income at the state level. If you live in California or earn income there, you almost certainly owe state income tax on that money. The state uses a progressive tax system, meaning the tax rate increases as your income increases. Tax rates range from 1% on the lowest incomes to 13.3% on the highest, plus a temporary 1% Mental Health Tax on income over $1 million that has been extended through 2026.

Unlike some states, California does not offer a flat tax rate or an exemption for certain types of income earners. Even retirees with Social Security or pension income may owe state tax, depending on their total income and filing status. The key question is not whether California taxes income — it does — but whether your specific situation requires you to file a return and pay.

Key Takeaways

  • California taxes income at progressive rates from 1% to 13.3%, plus an additional 1% Mental Health Tax on income over $1 million through 2026.
  • You must file a California return if your income exceeds the filing threshold for your age and filing status, even if you do not owe tax.
  • California taxes wages, self-employment income, interest, dividends, and most other income sources, with limited exceptions.
  • If you moved to or from California during the year, you may owe tax to both states and will need to file in both places.
  • The Franchise Tax Board (FTB) administers California income tax and can be reached through their website or by phone for questions about your specific situation.

Who must file a California state return

You must file a California return if your income exceeds certain thresholds that depend on your age and filing status. For the 2024 tax year (filed in 2025), a single person under 65 must file if they had more than $23,942 in income. A married couple filing jointly with both spouses under 65 must file if they had more than $47,884. These thresholds are higher if you are 65 or older.

These thresholds explore even if you do not owe any tax. California requires you to file to report your income, claim deductions, and establish that you do not owe. If you are self-employed, the rules are different — you must file if your net self-employment income is $400 or more, regardless of your total income.

If you worked in California but moved out of state during the year, or moved into California during the year, you still must file a California return for the months you lived there. You will also file a return in your new state for the months you lived there.

What income California taxes

California taxes most types of income. This includes wages from a job, self-employment income, interest from savings accounts and bonds, dividends from stocks, rental income, and income from retirement accounts like IRAs and 401(k)s. If you received a distribution from a retirement account, California taxes that money even though you may have already paid federal tax on it.

Social Security benefits are generally not taxed by California, which is one of the few breaks the state offers. However, if your total income is high enough, part of your Social Security may become taxable at the federal level, and you will owe federal tax on it.

Capital gains — the profit you make when you sell an investment for more than you paid — are taxed as income in California. Long-term capital gains (from assets held more than one year) are taxed at the same rates as ordinary income, unlike the federal system which has preferential rates for long-term gains.

How California tax rates work

California uses a progressive tax bracket system. Your income is divided into brackets, and each bracket is taxed at a different rate. You do not pay the top rate on all your income — only on the income that falls into the highest bracket you reach.

For example, if you are single and earned $75,000 in 2024, you would not pay 9.3% on all of it. Instead, you would pay 1% on the first portion, then 2% on the next portion, then 4%, then 6%, then 8%, then 9.3% on only the income above a certain threshold. The exact brackets change each year and depend on your filing status.

On top of the regular rates, California added a 1% Mental Health Tax on income over $1 million. This tax was set to expire after 2024 but has been extended through 2026. If your income exceeds $1 million, you will owe this additional 1% on the amount above $1 million.

Deductions and credits available in California

California allows you to reduce your taxable income through deductions and to reduce your tax bill through credits. The standard deduction — a flat amount you can subtract from your income — varies by filing status and age. For 2024, a single person under 65 can deduct $5,202. A married couple filing jointly can deduct $10,404. These amounts are higher if you are 65 or older.

You can choose to itemize deductions instead of taking the standard deduction if your itemized deductions are larger. California allows deductions for state and local taxes (up to $10,000 combined), mortgage interest, charitable contributions, and other expenses, though the rules mirror federal rules closely.

California also offers tax credits for certain situations. The Earned Income Tax Credit (EITC) is available to lower-income workers and families. The Child and Dependent Care Credit helps pay for childcare. The Renter's Credit provides relief to renters with low income. These credits directly reduce the tax you owe, making them more valuable than deductions.

How to file your California return

You can file your California return using tax preparation software, by mail, or through a tax professional. The Franchise Tax Board (FTB) accepts returns filed electronically or on paper. If you file electronically, you will receive a response faster and can track your refund online.

California returns are due on the same date as federal returns — typically April 15. If you request a federal extension, you automatically receive an extension for your California return as well. However, if you owe tax, you should pay by April 15 to avoid penalties and interest, even if you file late.

You will need your Social Security number, income documents (W-2s, 1099s, K-1s), records of deductions or credits you are claiming, and information about any estimated tax payments you made during the year. If you are self-employed, you will also need records of your business income and expenses.

What happens if you do not file or pay

If you owe California tax and do not file or pay, the FTB will assess penalties and interest. The failure-to-file penalty is 5% of the unpaid tax for each month you are late, up to 25%. The failure-to-pay penalty is 0.5% of the unpaid tax for each month you are late, up to 25%. Interest accrues daily on unpaid tax at a rate set quarterly by the FTB.

If you do not file at all, the FTB may file a return on your behalf based on information they have from employers or financial institutions. This return will likely not include deductions or credits you are may have access to to, resulting in a higher tax bill than you would owe if you filed yourself.

If you owe a large amount and do not pay, the FTB can place a lien on your property, garnish your wages, or intercept your tax refund. If you cannot pay in full, you can request a payment plan or an offer in compromise (a settlement for less than you owe) by contacting the FTB directly.

Frequently Asked Questions

Do I have to pay California income tax if I just moved there?

You owe California tax only for the months you lived in California during the year. If you moved there partway through the year, you file a part-year resident return and report only the income you earned while living in California. You will also file a return in the state you moved from for the months you lived there. Both states may tax the same income if you moved mid-year, but you can claim a credit on one return for taxes paid to the other state.

What if I work in California but live in another state?

You must file a California return and pay California tax on the income you earned in California, even though you live elsewhere. You will also file a return in your home state. Your home state may tax the same income, but you can claim a credit for California taxes paid. Some states have reciprocal agreements that reduce or eliminate this double taxation, but most do not.

Is California income tax deductible on my federal return?

You can deduct state and local taxes (SALT) on your federal return, but only up to $10,000 total per year. This limit applies to the combined total of state income tax, sales tax, and property tax. If you paid more than $10,000 in California income tax alone, you can only deduct $10,000 of it on your federal return.

Do I owe California tax on money I earned outside California?

If you are a California resident, you owe California tax on all your income, regardless of where you earned it. This includes income from out-of-state investments, rental property in other states, or work you did while traveling. Non-residents owe California tax only on income earned in California.

Can I get a refund if I overpaid California income tax?

Yes. If you had too much tax withheld from your paychecks or made estimated tax payments that were too high, you will receive a refund when you file your return. The FTB typically issues refunds within 30 to 60 days of processing your return if you filed electronically. Paper returns take longer. You can check the status of your refund on the FTB website using your Social Security number and filing status.