California takes state income tax, Social Security tax, Medicare tax, and sometimes local taxes from your paycheck

Your California paycheck has multiple deductions that are required by law. The amount depends on your gross pay, how you filled out your tax forms, and where you live. Federal income tax, Social Security tax (6.2%), and Medicare tax (1.45%) come out of every paycheck. California adds state income tax on top of that. Some cities and counties also charge local taxes. The total can range from 20% to 40% of your gross pay, depending on your income level and which deductions apply to you.

The deductions happen automatically — your employer withholds the money and sends it to the government on your behalf. You do not have to do anything to make this happen. What you see on your paycheck stub is your net pay, which is what is left after all deductions. Understanding what each deduction is for helps you know whether the right amount is being taken out.

Key Takeaways

  • California state income tax rates range from 1% to 13.3% depending on your income, and the state uses a progressive tax system where higher earners pay higher rates.
  • Federal income tax, Social Security tax (6.2%), and Medicare tax (1.45%) are withheld from every paycheck regardless of state.
  • Your W-4 form tells your employer how much federal tax to withhold; if too much or too little is being taken out, you can update it with your employer.
  • Some California cities and counties charge additional local income taxes that appear as separate line items on your pay stub.
  • You can see the exact breakdown of all deductions on your pay stub, which your employer must provide with each paycheck.

California state income tax rates and brackets

California uses a progressive tax system, meaning the tax rate increases as your income increases. The state has 10 tax brackets ranging from 1% on the lowest incomes to 13.3% on the highest. You do not pay 13.3% on all your income — you pay the lower rate on the lower portion and the higher rate only on income that falls into that bracket.

For the 2024 tax year, the brackets are adjusted annually for inflation. A single person earning $10,000 pays 1% on that income. Someone earning $70,000 pays 1% on the first portion, then 2%, then 4%, and so on, with only the income above certain thresholds taxed at the higher rates. Your employer uses your W-4 form and current tax tables to calculate how much to withhold from each paycheck.

The withholding is an estimate based on the assumption you will earn the same amount every pay period for the whole year. If your income is uneven — you get a bonus, take unpaid leave, or change jobs — the withholding may not match what you actually owe. That is why some people get a refund at tax time and others owe money.

Federal income tax, Social Security, and Medicare

Federal income tax is separate from California state tax. Your employer withholds it based on the W-4 form you completed when you were hired. The amount depends on your income, filing status, and the number of dependents you claim. Unlike California's progressive brackets, federal withholding uses a different calculation method, but the idea is the same: the employer estimates what you will owe and takes it out gradually.

Social Security tax is 6.2% of your gross pay, up to a wage cap that changes each year. In 2024, you stop paying Social Security tax once you earn $168,600 in a calendar year. Medicare tax is 1.45% of all your gross pay with no cap. If you earn over $200,000 (single) or $250,000 (married filing jointly), you pay an additional 0.9% Medicare tax on the amount above that threshold. These are federal taxes, not California taxes, and they come out of every paycheck.

Self-employed people pay both the employee and employer portions of Social Security and Medicare (15.3% total), but employees only pay the employee portion (7.65% combined). Your employer pays the other half, though it does not appear on your pay stub.

Local taxes in California cities and counties

Some California cities and counties charge local income taxes in addition to state and federal taxes. These are less common than state tax but do exist in certain areas. San Francisco, for example, charges a local tax on wages earned within the city. Oakland, Berkeley, and a few other municipalities also have local income taxes. If you work in one of these areas, your employer will withhold the local tax and it will appear as a separate line item on your pay stub.

The rate and rules vary by location. San Francisco's tax ranges from 0.4% to 0.625% depending on income level. Some localities tax only residents who work there; others tax anyone who works there regardless of where they live. Check your pay stub to see if a local tax line appears. If it does, that is the rate your city or county charges.

If you move or change jobs to a different city, the local tax withholding changes. Tell your employer about the move so they can update your withholding. If you were paying a local tax and no longer work in that jurisdiction, the withholding should stop.

How to read your pay stub and verify deductions

Your pay stub shows your gross pay (total earnings before deductions), each deduction line by line, and your net pay (what you take home). The deductions are usually listed in this order: federal income tax, Social Security, Medicare, California state income tax, and any local taxes. Some pay stubs also show other deductions like health insurance premiums, retirement contributions, or wage garnishments.

To verify the deductions are correct, check that your gross pay matches your hourly rate times hours worked (or your salary divided by pay periods). Then look at the tax withholding. If you are paid biweekly, your federal withholding should be roughly the same each pay period unless your income varies. California state tax should also be consistent. If one deduction suddenly jumps or disappears, ask your payroll department why.

Keep your pay stubs throughout the year. When you file your tax return, you will need to know your total gross income and total taxes withheld. Your employer sends you a W-2 form in January showing this information, but your pay stubs are the backup record.

Adjusting your withholding if too much or too little is being taken out

If you get a large refund every year, too much federal tax is being withheld. If you owe money at tax time, too little is being withheld. You can adjust this by updating your W-4 form with your employer. The W-4 asks about your filing status, dependents, and other income. Changing any of these changes your withholding.

You can update your W-4 at any time — you do not have to wait until the new year. If you got married, had a child, or your spouse started working, those are reasons to update it. If you have a second job or side income, that affects your withholding too. The IRS has a withholding calculator on its website that can help you figure out what to claim.

For California state tax, you do not fill out a separate form. Your state withholding is calculated automatically based on your federal W-4 and your California income. If you think your California withholding is wrong, contact the California Franchise Tax Board or ask your payroll department to review it.

What happens to the taxes withheld from your paycheck

Your employer sends the withheld taxes to the government on a regular schedule — usually monthly or quarterly, depending on the amount. Federal income tax, Social Security, and Medicare go to the IRS and Social Security Administration. California state tax goes to the California Franchise Tax Board. Local taxes go to the city or county that collects them.

These are not savings accounts or loans. The money is government revenue used to fund Social Security benefits, Medicare, roads, schools, and other public services. When you file your tax return at the end of the year, the government compares what you actually owe to what was already withheld. If more was withheld than you owe, you get a refund. If less was withheld, you owe the difference.

Frequently Asked Questions

Why is my California tax withholding different from my federal withholding?

California and the federal government use different tax brackets, rates, and calculation methods. California's top rate is 13.3%; the federal top rate is 37%. Your income might fall into different brackets in each system. Also, California does not allow certain deductions that the federal government does, so your California taxable income might be higher or lower than your federal taxable income.

Can I claim more dependents on my W-4 to reduce withholding?

You can claim dependents if you actually have them and they meet IRS rules. Claiming dependents you do not have is tax fraud. If you legitimately have dependents, claiming them reduces your withholding and increases your take-home pay. If your situation changed — you had a child or adopted a dependent — update your W-4 with your employer.

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

You pay California income tax on income earned in California, even if you live elsewhere. Your employer withholds California tax based on where the work is performed. You may also owe income tax to your home state, depending on that state's rules. Some states have reciprocal agreements with California to avoid double taxation, but you will need to file returns in both states and claim credits to avoid paying twice.

Do I get a refund if too much tax was withheld?

Yes. When you file your tax return, if your total withholding exceeds what you actually owe, you receive a refund. The refund comes from both federal and state taxes. You can choose to receive it as a check, have it deposited to your bank account, or apply it to next year's taxes. The refund usually arrives within a few weeks to a few months after you file.

Why does my pay stub show different amounts for the same deduction each month?

If your pay varies — you work overtime, take unpaid leave, or receive bonuses — your gross pay changes, and so do your tax withholdings. Taxes are calculated as a percentage of gross pay, so a higher gross pay means higher withholding. If the variation is large or unexplained, ask your payroll department to review the calculation.