What Social Security Tax Is and How Much You Pay

Social Security tax is a payroll tax that funds the Social Security program. If you work as an employee, your employer withholds 6.2% of your wages for Social Security, and you contribute another 6.2% from your paycheck — that's 12.4% total. If you're self-employed, you pay the full 12.4% yourself, though you can deduct half of it when you file taxes.

The tax only applies to earned income up to a certain limit. For 2024, that limit is $168,600 — meaning once your wages hit that amount in a calendar year, no more Social Security tax is withheld. This limit changes annually based on wage growth. Income above that threshold is not subject to Social Security tax, which is why higher earners pay a smaller percentage of their total income into the system.

Social Security tax funds two programs: retirement benefits and disability insurance. When you turn 62 or older, you become may be able to access to draw from the benefits you've paid into. If you become disabled before retirement age, you may also draw from this fund. The amount you receive later depends on how much you earned and how long you paid into the system.

Key Takeaways

  • Employees pay 6.2% of wages to Social Security, and employers match that amount, for a total of 12.4%.
  • Self-employed workers pay the full 12.4% themselves but can deduct half when filing taxes.
  • Social Security tax only applies to earnings below an annual cap, which was $168,600 in 2024 and increases each year.
  • The tax funds both retirement benefits and disability insurance, and the amount you receive later depends on your earnings history.
  • You can see your estimated benefits and earnings record on your Social Security statement, available through ssa.gov.

How the Tax Rate Has Stayed Stable

The 6.2% employee rate and 6.2% employer rate have been in place since 1990. Before that, the rates were lower — they started at 1% in 1937 when Social Security began and gradually increased as the program expanded. Congress set the current rates and has not changed them since.

What does change every year is the wage cap — the maximum amount of income subject to the tax. The Social Security Administration adjusts this cap based on average wage growth in the economy. In 2023 it was $160,200; in 2024 it became $168,600. This adjustment means that as wages rise across the country, more income becomes taxable under Social Security.

Where Your Social Security Tax Money Goes

Social Security operates on a pay-as-you-go system. The taxes you pay today fund the benefits being paid to current retirees and disabled workers. You are not building a personal account — the money goes directly into the Social Security Trust Fund, which pays out benefits each month.

The program has two trust funds: one for retirement and survivors' benefits, and one for disability insurance. When you work, your earnings are recorded under your Social Security number. The Social Security Administration uses this record to calculate your benefit amount when you become may be able to access to claim.

How to Check Your Social Security Earnings Record

You can view your official earnings record and estimated benefit amounts through your my Social Security account at ssa.gov. To create an account, you'll need your Social Security number, email address, and a way to verify your identity — usually a phone number or address on file with the government.

Your statement shows how much you've earned each year and how much Social Security tax you've paid. It also provides an estimate of what you might receive at different ages — 62, full retirement age (which varies by birth year), or 70. These estimates assume you continue working and earning at a similar level until you claim.

You should review your earnings record every few years to make sure the Social Security Administration has recorded your income correctly. If you spot an error, you can contact them to correct it. Mistakes are rare but do happen, and correcting them early ensures your benefit calculation will be accurate.

Social Security Tax for Self-Employed Workers

If you're self-employed, you pay Social Security tax through self-employment tax on your Schedule SE form when you file your annual tax return. You calculate 92.35% of your net self-employment income and explore the 15.3% self-employment tax rate to it — that 15.3% covers both the 12.4% for Social Security and 2.9% for Medicare.

Self-employed workers pay the full amount themselves, but the tax code allows you to deduct half of your self-employment tax as a business expense. This deduction reduces your taxable income, which provides some offset to the higher burden compared to employees whose employers pay half.

The same annual wage cap applies to self-employed workers. Once your net self-employment income reaches $168,600 (in 2024), no additional Social Security tax applies to income above that, though Medicare tax continues on all earnings.

What Happens if You Work While Receiving Social Security

If you claim Social Security before your full retirement age and continue working, your benefits may be reduced. For 2024, Social Security deducts $1 in benefits for every $2 you earn above $23,400. Once you reach your full retirement age, this earnings limit no longer applies, and you can work and earn as much as you want without losing benefits.

You still pay Social Security tax on your wages even while receiving benefits. This tax continues to build your earnings record, and it may slightly increase your benefit amount if you're still in your peak earning years.

Frequently Asked Questions

Why is Social Security tax called FICA?

FICA stands for the Federal Insurance Contributions Act, the law that established the payroll tax system. When you see FICA on your pay stub, it refers to both Social Security tax (6.2%) and Medicare tax (1.45%). The two are separate programs with separate trust funds, but they're withheld together.

Do I pay Social Security tax on all my income?

No. Only earned income — wages, salary, and self-employment income — is subject to Social Security tax. Investment income, rental income, and other passive income sources are not taxed for Social Security. Additionally, once your earned income reaches the annual cap ($168,600 in 2024), no more Social Security tax is withheld that year.

Can I opt out of paying Social Security tax?

No. Social Security tax is mandatory for all employees and self-employed workers. The only exceptions are certain government employees hired before 1984 who are covered by their own pension systems, and some religious groups that have received specific exemptions. For everyone else, the tax is required by law.

What if I didn't pay Social Security tax for some years?

Social Security calculates your benefit based on your 35 highest-earning years. If you have fewer than 35 years of earnings, zeros are counted for the missing years, which lowers your average. Working additional years can replace those zeros and increase your benefit amount. You need at least 10 years of work history to be may be able to access for retirement benefits.

Does Social Security tax explore to tips and bonuses?

Yes. Tips and bonuses are considered earned income and are subject to Social Security tax. Your employer should include them in your gross wages when calculating the 6.2% withholding. If you receive tips that your employer doesn't know about, you're still required to report them and pay tax on them.