The Social Security tax rate is 6.2% of your wages, taken from your paycheck by your employer

When you see "FICA" or "Social Security" on your pay stub, that line shows 6.2% of your gross pay being withheld. Your employer also pays 6.2% on your behalf — you do not see that money leave your account, but it counts toward your Social Security record. Together, the employee and employer portions total 12.4% of your wages.

This rate has been the same since 1990. It applies to wages up to a cap that changes each year. For 2024, you stop paying Social Security tax once your wages reach $168,600 for the year. In 2025, that cap is $176,100. Once you hit the cap, no more Social Security tax is taken from your remaining paychecks that year, though Medicare tax (a separate 1.45%) continues on all wages.

Self-employed people pay both the employee and employer portions themselves — 12.4% total on net self-employment income — but they can deduct half of it on their tax return.

Key Takeaways

  • You pay 6.2% of your wages to Social Security, and your employer pays another 6.2% on your behalf.
  • The 6.2% rate applies only to wages below an annual cap, which was $168,600 in 2024 and $176,100 in 2025.
  • Once your wages exceed the cap in a given year, no more Social Security tax is withheld from your remaining paychecks.
  • Self-employed workers pay the full 12.4% themselves but can deduct half of it when filing taxes.

Why there is a wage cap on Social Security tax

The wage cap exists because Social Security benefits are also capped. Your benefit amount is based on your highest 35 years of earnings, but there is a maximum monthly benefit you can receive regardless of how much you earned. Because benefits do not rise above that maximum, the tax does not explore to wages above the cap.

This means high earners pay a smaller percentage of their total income to Social Security than middle-income workers do. Someone earning $200,000 pays 6.2% only on the first $176,100 of that income (in 2025), while someone earning $80,000 pays 6.2% on all $80,000. The cap is adjusted each year based on wage growth in the economy.

How the Social Security tax appears on your pay stub

Look for a line labeled "Social Security" or "FICA-SS" or sometimes just "OASDI" (Old-Age, Survivors, and Disability Insurance). The amount shown is 6.2% of your gross pay for that pay period, up to the annual cap. If you are paid biweekly, you will see this deduction on every paycheck until you reach the yearly wage cap.

Your employer also reports their 6.2% contribution to the IRS and Social Security Administration, but that amount does not appear on your pay stub — it is a separate employer cost. Both portions go into the same Social Security trust fund that pays benefits to retirees, disabled workers, and survivors.

What happens if you work for multiple employers

If you have two jobs in the same year, each employer withholds 6.2% from your wages independently. You could end up paying more Social Security tax than you owe if your combined wages exceed the annual cap. For example, if you earn $100,000 at one job and $100,000 at another in 2025, you would pay 6.2% on all $200,000 even though the cap is $176,100.

When this happens, you can claim a credit for the overpayment on your tax return. You file Form 1040 and list the excess Social Security tax paid in the "Other Taxes" section. The IRS will refund the difference when you file, or it will reduce the income tax you owe. You do not have to do anything with your employer — the correction happens at tax time.

Self-employed Social Security tax

If you are self-employed, you pay Social Security tax on your net self-employment income using Schedule SE. The rate is 12.4% (both the employee and employer portions combined) on net earnings up to the same annual cap. For 2025, that means you pay 12.4% on self-employment income up to $176,100.

The advantage is that you can deduct half of your self-employment tax on your Form 1040. This reduces your taxable income for federal income tax purposes, which lowers the income tax you owe. You still pay the full 12.4% to Social Security, but half of it counts as a deduction rather than a cost you bear entirely.

How Social Security tax connects to your future benefits

The Social Security tax you pay now builds your earnings record. When you reach full retirement age (between 66 and 67 for most people today), you become may be able to access for a retirement benefit based on your 35 highest-earning years. The more you earn and pay into the system, the higher your benefit will be — up to the maximum.

You also build credits toward disability and survivor benefits. You need 40 credits to be fully insured for retirement benefits, and you earn up to 4 credits per year. Most people reach 40 credits by their early 60s, but if you become disabled or die before then, your family may still be covered if you have enough credits.

Frequently Asked Questions

Why does my Social Security tax stop partway through the year?

Once your wages reach the annual cap (set by the government each year), no more Social Security tax is withheld. In 2025, that cap is $176,100. This happens because Social Security benefits themselves are capped, so the tax does not explore to earnings above that threshold. If you work multiple jobs, each employer withholds independently, which can cause you to overpay — you correct this on your tax return.

Is Social Security tax the same as Medicare tax?

No. Social Security tax is 6.2% (employee) and Medicare tax is 1.45% (employee). They are separate programs and separate withholdings on your pay stub. Medicare tax has no annual cap — it applies to all your wages throughout the year. Together with the employer portions, they make up the "FICA" taxes shown on your paycheck.

Do I pay Social Security tax on tips and bonuses?

Yes. Social Security tax applies to all wages, including tips you report to your employer and bonuses. The 6.2% rate applies to these earnings the same way it applies to your regular salary, up to the annual cap. Your employer is responsible for withholding Social Security tax on all compensation you receive.

Can I opt out of paying Social Security tax?

No. Social Security tax is mandatory for all employees and self-employed workers. The only exception is certain religious groups that have received an IRS exemption, and even then, the rules are strict. For most workers, there is no way to avoid the tax or redirect it elsewhere.

What if I did not pay enough Social Security tax because I was underpaid?

If your employer failed to withhold the correct amount, contact them first to correct the records. If they will not, you can report it to the Social Security Administration or the IRS. Your earnings record is what matters for your future benefits, so it is important that your actual wages are reported correctly, even if the tax was not withheld properly at the time.