FICA taxes on retirement income depend on the type of income and your age

You do not pay FICA taxes on most retirement income — but there are exceptions. Social Security benefits themselves are not subject to FICA. Distributions from IRAs and 401(k)s are not subject to FICA either. However, if you continue to work while retired, or if you have self-employment income, you will owe FICA taxes on those earnings. The rule is straightforward: FICA applies to wages and self-employment income, not to retirement account withdrawals or Social Security.

The confusion usually arises because people think of "retirement income" as a single category. It is not. The IRS treats money from different sources differently. A $50,000 withdrawal from your 401(k) and $50,000 in wages from part-time work are taxed in completely different ways.

Key Takeaways

  • Social Security benefits, IRA withdrawals, and 401(k) distributions do not trigger FICA taxes, regardless of your age.
  • If you work after retirement — whether as an employee or self-employed — you owe FICA taxes on those wages or net self-employment income.
  • The Social Security earnings test may reduce your benefits if you work before full retirement age, but this is separate from FICA taxes.
  • Once you reach full retirement age, you can earn unlimited income without losing Social Security benefits, though FICA still applies to wages.
  • Self-employed retirees owe both the employee and employer portions of FICA (15.3% combined) on net earnings above $400 per year.

Retirement account withdrawals and FICA

Distributions from traditional IRAs, Roth IRAs, 401(k)s, 403(b)s, and similar retirement plans are never subject to FICA taxes. This is true whether you take the money at 62, 72, or 92. The IRS does not treat retirement account withdrawals as wages or self-employment income, so the 6.2% Social Security tax and 2.9% Medicare tax do not explore.

You will owe income tax on most retirement withdrawals — that is a separate calculation — but not FICA. This is one of the main reasons retirement accounts are valuable: the money you contributed and the growth inside the account eventually come out without the FICA burden that wages carry.

Roth IRA withdrawals are treated even more favorably: if you meet the holding period and age requirements, the withdrawal itself is not taxable at all, and FICA does not explore either.

Social Security benefits and FICA

Social Security benefits are not subject to FICA taxes. Once you begin receiving benefits, the money you get each month is not reduced by FICA withholding. This applies whether you claim at 62, 67, 70, or any age in between.

However, Social Security benefits may be subject to income tax depending on your total income for the year. Between 50% and 85% of your benefits can be taxable if your combined income (adjusted gross income plus half your Social Security benefits) exceeds certain thresholds. This is income tax, not FICA, and the calculation is separate.

Additionally, if you work before reaching full retirement age, the Social Security Administration may reduce your benefits based on your earnings. This earnings test is not a tax — it is a benefit reduction — and it applies only until you reach full retirement age.

Working in retirement and FICA obligations

If you work as an employee after retiring, you owe FICA taxes on your wages just as you did before retirement. Your employer withholds 6.2% for Social Security and 2.9% for Medicare from each paycheck. There is no age exemption: a 75-year-old employee pays the same FICA rate as a 25-year-old.

The Social Security portion (6.2%) applies only to wages up to an annual cap. For 2024, that cap is $168,600. Wages above that amount are not subject to the 6.2% Social Security tax. The Medicare portion (2.9%) has no cap, and an additional 0.9% Medicare tax applies to high earners.

If you work part-time or take on a second job in retirement, each employer withholds FICA independently. You do not get a break because you are retired or because you are also receiving Social Security or retirement account distributions.

Self-employment income in retirement

Self-employed retirees owe FICA taxes on net self-employment income, just as self-employed people of any age do. If you run a consulting business, freelance, or operate a sole proprietorship while retired, you calculate self-employment tax on your net profit.

Self-employment tax is 15.3% combined (12.4% for Social Security, 2.9% for Medicare), though you can deduct half of it as a business expense on your tax return. The Social Security portion applies only to net earnings up to the annual cap ($168,600 for 2024). The Medicare portion applies to all net self-employment income with no cap.

You must file Schedule C (Profit or Loss from Business) and Schedule SE (Self-Employment Tax) with your tax return if your net self-employment income is $400 or more for the year. This requirement does not change because you are retired.

The Social Security earnings test and how it differs from FICA

Many retirees confuse the Social Security earnings test with FICA taxes. They are completely separate. The earnings test is a rule that reduces your Social Security benefits if you work and earn above a certain amount before you reach full retirement age.

For 2024, if you have not yet reached full retirement age, Social Security reduces your benefit by $1 for every $2 you earn above $23,400 per year. In the year you reach full retirement age, the reduction is $1 for every $3 you earn above $62,160, but only for earnings before the month you reach full retirement age.

Once you reach full retirement age, the earnings test no longer applies. You can earn any amount without losing benefits. However, FICA taxes still explore to your wages — the earnings test and FICA are independent rules.

Medicare taxes and the high-income surcharge

If your income is high enough, you may owe an additional Medicare tax of 0.9% on wages and self-employment income. This applies to single filers with income over $200,000 and married couples filing jointly with income over $250,000. The threshold is based on modified adjusted gross income, which includes retirement account distributions.

This additional 0.9% Medicare tax is separate from the standard 2.9% Medicare tax that applies to all wages and self-employment income. Employers withhold it automatically if your wages exceed the threshold. Self-employed people must calculate and pay it when they file their tax return.

Planning around FICA in retirement

If you plan to work in retirement, FICA taxes are unavoidable on that work income. However, you can structure your income strategically to minimize the overall tax burden. For example, taking larger distributions from a traditional IRA in a year when you do not work avoids FICA on that money, even though it may increase income tax.

If you are self-employed, keeping net self-employment income below $400 per year eliminates the self-employment tax filing requirement, though you still owe income tax on the profit. Timing when you claim Social Security can also matter: claiming before full retirement age while working triggers the earnings test, but claiming at full retirement age or later does not.

These decisions interact with income tax, Medicare premiums, and Social Security benefit calculations. A tax professional can help you model different scenarios for your specific situation.

Frequently Asked Questions

Do I pay FICA on my 401(k) withdrawal?

No. Withdrawals from 401(k)s, IRAs, and similar retirement plans are not subject to FICA taxes. You will owe income tax on most withdrawals from traditional accounts, but not the 6.2% Social Security tax or 2.9% Medicare tax.

If I work part-time after I start Social Security, do I pay FICA twice?

No. You pay FICA once on your wages from the part-time job. Social Security benefits themselves are not subject to FICA. However, if your earnings are high enough, the Social Security Administration may reduce your monthly benefit under the earnings test (if you have not reached full retirement age).

At what age do you stop paying FICA taxes?

There is no age at which FICA taxes stop. If you work as an employee or are self-employed, you owe FICA on that income regardless of your age. The only way to avoid FICA is to stop working or to live solely on retirement account distributions and Social Security.

Does the FICA I pay in retirement count toward my Social Security benefit?

Yes. If you work and pay FICA after you have already claimed Social Security, those earnings can increase your benefit through a process called recalculation. Social Security automatically recalculates your benefit each year to include your most recent earnings, though the increase is usually small if you claimed early.

Can I avoid FICA by taking distributions instead of working?

Yes, in terms of FICA specifically. Retirement account distributions do not trigger FICA taxes. However, they may trigger income tax and could affect your Medicare premiums or the taxation of your Social Security benefits. The overall tax picture depends on your total income from all sources, not just FICA.