What comes out of your paycheck for payroll taxes
Payroll taxes are withheld from your paycheck in two parts: Social Security and Medicare. Together they total 7.65% of your gross pay. Social Security takes 6.2% up to a wage cap (which changes yearly), and Medicare takes 1.45% with no cap. Your employer also pays an equal amount on your behalf, but that does not show on your stub.
The exact dollar amount depends on your salary. If you earn $1,000 per paycheck, you pay $76.50 in payroll taxes. If you earn $2,000, you pay $153. The percentage stays the same; only the dollar amount changes with your income.
These are separate from federal income tax withholding, which is a different calculation based on your W-4 form and tax bracket. Payroll taxes fund Social Security retirement benefits and Medicare health insurance, while income tax funds general government operations.
Key Takeaways
- Social Security withholds 6.2% of your pay up to an annual wage limit, and Medicare withholds 1.45% with no limit, for a combined 7.65%.
- Your employer pays an equal 7.65% on your behalf, so the total payroll tax cost to your employer is 15.3%, though you only see your half on your pay stub.
- The Social Security wage cap changes each year; once you earn above that amount in a calendar year, Social Security stops being withheld from additional paychecks.
- Payroll taxes are withheld automatically and are not optional, even if you claim exemptions on your W-4 form.
- Self-employed people pay both the employee and employer portions (15.3% total) but can deduct half of it as a business expense on their tax return.
The Social Security portion: 6.2% with a yearly cap
Social Security withholds 6.2% of your wages each pay period. This continues until you reach the Social Security wage base for that year. Once you earn above that amount, Social Security stops being withheld from the rest of your paychecks for that calendar year.
The wage base changes annually. In recent years it has been in the $160,000 to $168,000 range, but the exact figure depends on national wage trends. Your employer's payroll system knows the current year's cap and stops the deduction automatically once you cross it.
This means high earners pay Social Security tax only on the first portion of their annual income. A person earning $200,000 per year pays 6.2% on roughly the first $168,000 (the cap), then pays nothing on the remaining $32,000. A person earning $50,000 pays 6.2% on all $50,000 because they never reach the cap.
The Medicare portion: 1.45% with no limit
Medicare withholds 1.45% of every dollar you earn, with no wage cap. Unlike Social Security, this continues on all your income no matter how much you make. A person earning $50,000 pays 1.45% on all $50,000. A person earning $500,000 pays 1.45% on all $500,000.
There is an additional Medicare tax of 0.9% that applies to wages above a certain threshold ($200,000 for single filers, $250,000 for married filing jointly). If you cross that threshold, your employer withholds the extra 0.9% on the amount above it. This additional tax does not have an employer match — only you pay it.
What your employer pays on top
Your employer pays payroll taxes equal to what you pay: 6.2% for Social Security (up to the wage cap) and 1.45% for Medicare, plus the 0.9% additional Medicare tax if applicable. This employer portion does not appear on your pay stub because it is not deducted from your paycheck — it is a separate cost to the employer.
From the employer's perspective, hiring someone at $50,000 per year costs them $50,000 in salary plus $3,825 in payroll taxes (7.65% of $50,000). This is why total compensation discussions sometimes mention "loaded cost" — the salary plus the employer's tax burden.
Self-employed people do not have an employer to split the cost with, so they pay both portions themselves: 15.3% total (or 15.9% if the additional Medicare tax applies). However, they can deduct half of this self-employment tax as a business expense when filing their tax return, which reduces their taxable income.
How payroll taxes appear on your pay stub
Your pay stub shows the deductions under labels like "Social Security Tax," "FICA," "Medicare," or "OASDI" (Old-Age, Survivors, and Disability Insurance). The stub lists the amount withheld for the current pay period and often shows year-to-date totals.
The stub also shows your gross pay (before deductions) and your net pay (after all deductions, including payroll taxes, income tax, and any voluntary deductions like health insurance or retirement contributions). Payroll taxes are mandatory and cannot be reduced by claiming exemptions on your W-4 — they are withheld the same way regardless of your tax filing status.
When the wage cap affects your withholding
If you earn enough to hit the Social Security wage cap in a given year, you will notice your paycheck increase slightly once you cross it. The 6.2% Social Security withholding stops, but your 1.45% Medicare withholding continues. Your take-home pay goes up because less is being deducted.
This matters most for high earners and for people who change jobs mid-year. If you work two jobs and earn above the wage cap at each one, you may overpay Social Security tax. When you file your tax return, you can claim a credit for the overpayment. The IRS will refund the excess when you file.
People who receive bonuses or irregular income should also watch for this. A large bonus late in the year might push you over the cap, stopping Social Security withholding on that bonus. Your payroll system handles this automatically, but it is worth understanding so you are not surprised by a larger paycheck.
Payroll taxes versus income tax withholding
Payroll taxes and federal income tax withholding are two separate deductions. Payroll taxes are fixed percentages (7.65% for most people). Income tax withholding varies based on your W-4 form, your income level, and your tax bracket.
You can adjust your income tax withholding by changing your W-4, but you cannot adjust payroll taxes — they are mandatory and the same for everyone. Some people confuse the two because both appear on the pay stub and both are withheld by the employer.
A straightforward way to remember: payroll taxes fund Social Security and Medicare (specific programs). Income tax funds general government operations. Payroll taxes are the same percentage for everyone; income tax withholding is customized to your situation.
Frequently Asked Questions
Why do I pay payroll taxes if I am not retired yet?
Payroll taxes fund Social Security retirement benefits, but also survivor benefits (if you die, your family may receive payments) and disability benefits. Medicare taxes fund health insurance for people 65 and older, but also for some younger people with disabilities. You are paying into these programs now so they are available when you need them.
Can I opt out of paying payroll taxes?
No. Payroll taxes are mandatory for all employees and self-employed people. The only exceptions are certain religious groups and some government employees, but these are rare and require specific documentation. If you are a regular employee, payroll taxes are withheld automatically.
What happens to the payroll taxes I pay?
Social Security taxes go into the Social Security Trust Fund, which pays current retirees and people receiving disability or survivor benefits. Medicare taxes go into the Medicare Trust Fund, which pays for hospital insurance and other medical services. These are not savings accounts in your name — they fund the programs for current beneficiaries.
Do I get a refund if too much payroll tax was withheld?
If you overpay Social Security tax (by working multiple jobs or changing jobs mid-year and crossing the wage cap twice), you can claim a credit on your tax return and receive a refund. Medicare and additional Medicare tax overpayments are handled through your overall tax return calculation. You do not receive a separate refund for payroll taxes the way you might for income tax.
How much will I receive from Social Security when I retire?
Your Social Security benefit depends on how much you earned over your lifetime and when you start receiving benefits. The more you paid in payroll taxes, the higher your benefit, but there is a maximum benefit amount. You can view your estimated benefit on your Social Security account at ssa.gov, or call 1-800-772-1213 to speak with a representative.