What gets taken from your paycheck
Your employer removes money from each paycheck for federal income tax, Social Security tax, and Medicare tax. The amount depends on what you earn, your filing status, and the W-4 form you filled out when you were hired. State and local taxes may also come out, depending on where you live and work.
The money taken out is not a loan or a penalty — it is a prepayment toward taxes you will owe at the end of the year. When you file your tax return in April, the IRS compares what was taken out to what you actually owe. If too much was taken, you get a refund. If too little was taken, you owe the difference.
Key Takeaways
- Federal income tax, Social Security tax, and Medicare tax are removed from almost every paycheck, with rates that vary based on your income and the W-4 you filed.
- Social Security tax is 6.2 percent of your gross pay (up to a yearly cap), and Medicare tax is 1.45 percent with no cap, and your employer pays an equal amount for each.
- Federal income tax has no fixed rate — it depends on your W-4 answers, your income level, and your filing status, and it is the amount most people can adjust.
- State and local income taxes vary widely by location and may add another 1 to 13 percent depending on where you live.
- The total taken out is usually 15 to 25 percent of your gross pay, but the exact amount depends on your specific situation.
Federal income tax: how much and why it varies
Federal income tax has no single rate. Instead, the IRS uses a tax bracket system — your income is taxed at different rates depending on how much you earn. The more you earn, the higher the rate on the top portion of your income. For 2024, federal tax brackets range from 10 percent to 37 percent, but most people fall in the 12 to 24 percent range.
What comes out of your paycheck each week or month is an estimate based on your W-4 form. When you start a job, you fill out a W-4 to tell your employer how much to withhold. Your answers about filing status, dependents, and other income determine the withholding amount. If you claim zero dependents and say you have no other income, more money is withheld. If you claim dependents or say you have other income, less is withheld.
You can change your W-4 at any time during the year if your situation changes — for example, if you get married, have a child, or take a second job. Changing your W-4 will change how much is taken out starting with your next paycheck.
Social Security and Medicare taxes: fixed rates
Social Security tax is 6.2 percent of your gross pay, up to a yearly earnings cap. In 2024, the cap is $168,600, meaning once you earn that much in a year, no more Social Security tax is taken out for the rest of that year. Your employer also pays 6.2 percent on your behalf, for a total of 12.4 percent.
Medicare tax is 1.45 percent of your gross pay with no earnings cap — it is taken out on every dollar you earn, no matter how much. Your employer also pays 1.45 percent. If you earn over $200,000 (or $250,000 if married filing jointly), an additional 0.9 percent Medicare tax is taken from your pay.
Social Security and Medicare taxes are sometimes called FICA taxes (Federal Insurance Contributions Act). Unlike federal income tax, these rates do not change based on your W-4 — they are the same for everyone.
State and local income taxes
Nine states have no state income tax: Alaska, Florida, Nevada, South Dakota, Tennessee, Texas, Washington, Wyoming, and New Hampshire (which taxes only dividends and interest, not wages). In the other 41 states, state income tax is taken from your paycheck.
State tax rates vary widely. Some states have a flat rate — everyone pays the same percentage regardless of income. Other states use brackets similar to federal tax, with rates that increase as you earn more. State rates range from about 1 percent to 13 percent. A few cities also charge local income tax on top of state tax, adding another 1 to 3 percent in places like New York City, Philadelphia, and Columbus.
Your employer should know your state and local tax obligations based on where you work and live. If you work in one state but live in another, the rules can be complicated — some states tax based on where you work, others based on where you live. If you are unsure, contact your state's tax department or ask your payroll office.
How to read your pay stub
Your pay stub (or paycheck stub) breaks down exactly what was taken out. It shows your gross pay (total earnings before deductions), then lists each deduction separately: federal income tax withholding, Social Security, Medicare, state tax, local tax, and any other deductions like health insurance or retirement contributions.
The line labeled "Federal Income Tax Withholding" or "FIT" shows what was taken for federal income tax that pay period. The line labeled "Social Security" or "OASDI" shows the 6.2 percent. The line labeled "Medicare" shows the 1.45 percent. State and local taxes appear as separate lines.
At the bottom, you will see your net pay — the amount actually deposited into your account. This is your gross pay minus all deductions. Keep your pay stubs, because you will need them if you ever need to prove your income to a landlord, lender, or government program.
What affects how much is taken out
The main factor you can control is your W-4 form. If you want less taken out each paycheck (and a bigger paycheck now), you can claim more dependents or adjust your withholding on your W-4. If you want more taken out (and a bigger refund in April), you can claim fewer dependents or ask your employer to withhold extra.
You cannot control Social Security and Medicare taxes — those rates are set by law. You also cannot control state and local taxes, though you can move to a state with lower or no income tax if you have that option.
Other factors that affect withholding include your filing status (single, married, head of household), whether you have dependents, whether you have income from sources other than your job, and whether you work more than one job. If your situation changes during the year, update your W-4 to adjust your withholding.
Why taxes are taken out now instead of later
The government requires employers to withhold taxes throughout the year so that by April 15, most of the year's tax bill is already paid. This spreads the payment over the whole year instead of asking everyone to pay a large lump sum in April.
The amount withheld is an estimate. It is based on the assumption that you will earn the same amount every pay period for the whole year. If your income is uneven — for example, if you get a big bonus, work overtime, or have a period of unemployment — the withholding may not match what you actually owe. That is why some people get refunds and others owe money when they file their return.
Frequently Asked Questions
Why do I owe taxes in April if taxes were taken out of my paycheck?
Your withholding is an estimate based on your W-4 answers. If you claimed too many dependents, or if your income changed during the year, too little may have been taken out. You can adjust your W-4 at any time to change your withholding for future paychecks.
Can I stop taxes from being taken out of my paycheck?
No. Federal law requires employers to withhold income tax, Social Security, and Medicare from almost all paychecks. You can adjust how much is withheld by changing your W-4, but you cannot stop it entirely. Self-employed people pay these taxes differently, but they still owe them.
What does "gross pay" mean on my pay stub?
Gross pay is your total earnings before any deductions. It is the amount you earned, not the amount you take home. Your net pay (the amount deposited to your account) is your gross pay minus all deductions including taxes, health insurance, and retirement contributions.
Do I have to file a tax return if taxes were already taken out?
Yes, you should file a return to report all your income and claim any deductions or credits you are may have access to to. If too much was withheld, filing gets you a refund. If too little was withheld, filing tells you what you owe. Some people owe nothing, but filing is still required if your income exceeds certain thresholds.
If I get a big bonus, will more taxes be taken out?
Yes. Bonuses are subject to the same withholding rules as regular pay. Your employer will withhold federal income tax, Social Security, and Medicare from the bonus. The withholding may be higher than usual because the bonus increases your pay for that period, which can push you into a higher tax bracket temporarily.