What California withholds from your paycheck

California withholds state income tax from your paycheck based on your income level and the W-4 form you filed with your employer. The state tax rate ranges from 1% to 13.3%, depending on how much you earn. Unlike federal income tax, which uses tax brackets that reset each year, California's rate structure is permanent: the more you make, the higher percentage the state takes.

Your employer also withholds Social Security tax (6.2% of your gross pay, up to an annual wage cap) and Medicare tax (1.45% of all gross pay). These are federal taxes, not California-specific, but they come out of every California paycheck. If you earn over $200,000 as a single filer (or $250,000 married filing jointly), you pay an additional 0.9% Medicare tax on the amount above that threshold.

California also has State Disability Insurance (SDI), which you pay into through payroll deduction. The rate changes yearly but is typically around 1% of your gross wages, with a maximum annual contribution. This fund covers partial income replacement if you cannot work due to illness or injury.

Key Takeaways

  • California state income tax ranges from 1% to 13.3% depending on your annual income, and your employer withholds it based on your W-4 form.
  • Federal Social Security (6.2%) and Medicare (1.45%) taxes are withheld from every paycheck, plus an additional 0.9% Medicare tax if you earn over $200,000 as a single filer.
  • State Disability Insurance (SDI) costs roughly 1% of gross wages annually and provides partial income replacement during illness or injury.
  • Your actual take-home pay depends on your W-4 withholding choices, not just the tax rate brackets.

California income tax brackets for 2024

California's income tax brackets apply to your taxable income after standard deductions and other adjustments. For the 2024 tax year, a single filer with $20,000 in taxable income pays 1%. At $50,000 in taxable income, the rate jumps to 4%. At $100,000, it reaches 6%. The highest earners—those with over $680,000 in taxable income—pay 13.3%.

These brackets apply to California residents and part-year residents. If you moved to or from California during the year, you report only the income earned while you were a resident. The brackets themselves do not change year to year; California uses a fixed rate structure, not indexed brackets like the federal system.

Your W-4 form tells your employer how much to withhold. If you claim too many dependents or exemptions, your employer withholds less, and you may owe money at tax time. If you claim too few, you get a refund. Many people adjust their W-4 mid-year if their withholding is off track.

Social Security and Medicare taxes on California paychecks

These federal taxes are the same in California as everywhere else. Social Security tax is 6.2% of your gross pay, but only up to the annual wage base, which changes yearly. For 2024, you stop paying Social Security tax once you reach $168,600 in gross wages for the year. Your employer also pays 6.2% on your behalf, but that does not reduce your take-home pay.

Medicare tax has no wage cap. You pay 1.45% on all gross income, and your employer pays another 1.45%. If your income exceeds $200,000 (single) or $250,000 (married filing jointly), you pay an additional 0.9% Medicare tax on the excess. This extra tax is withheld by your employer and goes to Medicare.

Self-employed people in California pay both the employee and employer portions of these taxes, totaling 15.3% for Social Security (on income up to the cap) and 2.9% for Medicare (on all net self-employment income). They can deduct half of these taxes when filing their federal return.

State Disability Insurance (SDI) deductions

California's SDI program provides partial wage replacement if you cannot work due to a non-work-related illness, injury, or pregnancy. The program is funded entirely by employee payroll deductions; employers do not contribute. The deduction rate is set by the state each year and is typically around 1% of gross wages, with a maximum annual contribution cap.

For 2024, the SDI rate is approximately 1.0% of gross wages, with a maximum annual deduction of around $1,522 (the exact amount depends on the state's calculation). Once you reach the maximum for the year, no further SDI is withheld from your remaining paychecks. If you work for multiple employers in California, each withholds SDI separately, so you could exceed the cap across all jobs.

SDI benefits replace about 55% to 60% of your regular wages, up to a maximum weekly benefit amount set by the state. You must have worked in California for at least five months and earned at least $300 to be covered. Benefits typically begin after a one-week waiting period and can last up to four weeks for most conditions, or longer for pregnancy-related leave.

How to read your California pay stub

Your pay stub shows gross pay (your total earnings before any deductions), then lists each deduction separately. You will see a line for federal income tax withholding, state income tax withholding, Social Security, Medicare, SDI, and any voluntary deductions like health insurance or retirement contributions. The net pay at the bottom is what actually hits your bank account.

The year-to-date (YTD) columns show your cumulative earnings and taxes for the calendar year so far. This is useful for tracking whether you are on pace to hit the Social Security wage cap or the SDI maximum. If you see a sudden drop in state income tax withholding late in the year, it may mean you have reached a threshold or your employer made an adjustment based on your W-4.

If your withholding seems wrong—too high or too low—you can file a new W-4 with your employer at any time. You do not have to wait until January. Many people adjust in the fall if they realize they will owe or get a large refund.

Differences between California and federal withholding

California uses a different W-4 form than the federal government. The state form asks for fewer details and produces a simpler withholding calculation. If you file a federal W-4, your employer still needs a California form to know how much state tax to withhold. Some employers provide a combined form, but they are technically separate documents.

Federal withholding uses indexed tax brackets that change yearly. California's brackets are fixed. This means your federal withholding may shift year to year even if your income stays the same, while your California withholding follows a predictable pattern based on your income level.

California also taxes some income that the federal government does not, such as certain retirement distributions and out-of-state income for residents. Conversely, California offers some deductions the federal system does not. These differences mean your California tax bill and federal tax bill can diverge significantly, even if your gross income is identical.

Frequently Asked Questions

Why is my California state tax withholding higher than my federal withholding?

California's top tax rate (13.3%) is higher than the federal top rate (37%), and California taxes more income brackets at higher rates. If you earn $100,000 to $200,000, California's rate is often steeper than federal. Your W-4 choices also matter: if you claimed fewer dependents on your California form than your federal form, state withholding will be higher.

Do I pay California income tax if I work remotely for an out-of-state company?

Yes, if you are a California resident, you owe California income tax on all income earned, regardless of where your employer is located. Your employer should withhold California tax from your paycheck. If they do not, you are still responsible for the tax when you file your return.

What happens if I reach the Social Security wage cap mid-year?

Once your gross wages hit the annual cap (for 2024, $168,600), your employer stops withholding Social Security tax for the rest of that year. Your take-home pay increases because that 6.2% is no longer deducted. This is automatic; you do not need to do anything. If you work for multiple employers, each one withholds separately, so you could pay more than the cap across all jobs—but you can claim a credit on your federal tax return.

Can I opt out of SDI?

Most private-sector employees cannot opt out of SDI. However, some workers—such as certain government employees, railroad workers, and those covered by private disability plans—may be exempt. Ask your employer's payroll department whether you are covered. If you are, the deduction is mandatory.

How do I know if my withholding is correct?

Use the IRS withholding calculator (available on irs.gov) for federal tax and the California Franchise Tax Board's calculator for state tax. If you expect to owe money or get a large refund, your withholding is off. You can file a new W-4 with your employer to adjust it at any time during the year.