You do not pay FICA tax on pension income. Social Security and Medicare taxes apply to wages from current employment and to net self-employment earnings, and federal law specifically excludes qualified retirement plan distributions from the definition of wages. Your monthly pension check is still subject to federal income tax, but the 7.65% payroll tax that came out of every paycheck during your working years no longer applies.
Why Pensions Sit Outside the Payroll Tax System
FICA funds Social Security and Medicare, and it’s assessed on wages, meaning remuneration for employment.1Internal Revenue Service. Topic No. 751, Social Security and Medicare Withholding Rates Pension distributions are not payment for services you’re currently performing, and IRC Section 3121(a)(5) explicitly excludes payments from tax-exempt trusts under Section 401(a), annuity plans under Sections 403(a) and 403(b), SEPs, and governmental 457(b) plans from the definition of wages.2Office of the Law Revision Counsel. 26 USC 3121 – Definitions That statutory carve-out is the reason no Social Security or Medicare tax ever appears on a pension check.
The tax forms themselves reflect the split. Employers report wages on Form W-2, with dedicated boxes for Social Security wages, Social Security tax withheld, Medicare wages, and Medicare tax withheld. A pension plan administrator reports distributions on Form 1099-R instead.3Internal Revenue Service. About Form 1099-R, Distributions From Pensions, Annuities, Retirement or Profit-Sharing Plans, IRAs, Insurance Contracts, Etc. Form 1099-R has a box for federal income tax withheld but no boxes for FICA at all.4Internal Revenue Service. Form 1099-R Distributions From Pensions, Annuities, Retirement or Profit-Sharing Plans, IRAs, Insurance Contracts, Etc. If your retirement income arrives on a 1099-R, it’s outside the FICA system.
Regular income tax is a different matter. Pension income is included in gross income on Form 1040, and the plan administrator will typically withhold federal income tax unless you elect otherwise.5Internal Revenue Service. Instructions for Forms 1040 and 1040-SR Most states with an income tax treat pension payments as taxable too, though some offer partial or full exemptions for retirement income.
The FICA Was Already Collected
The government does collect payroll tax on the money that eventually becomes your pension. It collects on the front end. When you were working, your salary deferrals into a 401(k), 403(b), or similar plan were excluded from federal income tax but were still subject to FICA, and your employer withheld Social Security and Medicare taxes on those contributions before they went into the plan.6Internal Revenue Service. Are Retirement Plan Contributions Subject to Withholding for FICA, Medicare, or Federal Income Tax Defined benefit pensions work slightly differently because you don’t always make elective deferrals, but the same principle holds: the wages that funded the benefit were subject to FICA when you earned them. Investment growth inside the plan was never wages, so FICA never touched it.
How Other Retirement Income Is Treated
The FICA exclusion covers most qualified retirement vehicles, not just traditional pensions:
- 401(k) and 403(b) distributions are reported on Form 1099-R and subject to income tax but not FICA, whether taken as a lump sum or periodic payments.
- Traditional IRA distributions get the same treatment: income tax yes, FICA no.
- Qualified Roth IRA and Roth 401(k) withdrawals are exempt from both income tax and FICA. Contributions were made with after-tax dollars that had already been through payroll tax.
- Social Security benefits are not subject to FICA. Up to 50% or 85% of your benefits can be subject to federal income tax depending on your combined income.7Social Security Administration. Must I Pay Taxes on Social Security Benefits?
Payments That Still Trigger FICA
A few things you might receive around retirement look like pension income but are treated as wages under the tax code.
Nonqualified Deferred Compensation
Nonqualified deferred compensation (NQDC) plans sit outside the qualified plan rules, so the Section 3121(a)(5) exclusion doesn’t apply. FICA is assessed at the later of when you perform the services or when the deferred amount is no longer at risk of being forfeited.8eCFR. 26 CFR 31.3121(v)(2)-1 – Treatment of Amounts Deferred Under Certain Nonqualified Deferred Compensation Plans In practice, you usually pay FICA on the deferred amount while still employed, sometimes years before you receive the payout. If your regular wages already exceed the Social Security wage base ($184,500 in 2026), the 6.2% Social Security portion may not add much on top.9Social Security Administration. Contribution and Benefit Base
Severance Pay
Severance is wages for FICA purposes, even when paid in installments after your last day of work. The U.S. Supreme Court settled this in 2014, holding that severance qualifies as remuneration for employment and is subject to full FICA withholding. Standard lump-sum or installment severance does not qualify for any workaround.
Disability Payments Before Retirement Age
Disability payments from an employer-sponsored plan may be subject to FICA if you receive them before reaching the plan’s minimum retirement age. The IRS treats these payments as wage continuation. Once you reach the normal retirement age specified in the plan, the payments convert to retirement benefits and the FICA obligation stops.5Internal Revenue Service. Instructions for Forms 1040 and 1040-SR
Going Back to Work
If you return to work after retiring, your wages from the new job are subject to FICA like any other employment income. Your pension payments stay FICA-exempt. The two income streams are taxed independently: the pension keeps arriving on a 1099-R and the new wages appear on a W-2.10Internal Revenue Service. Rehired Annuitants
If FICA Was Withheld From Your Pension by Mistake
Errors happen. If a plan administrator or employer mistakenly withholds Social Security or Medicare tax from a pension distribution, ask them first to correct it and refund the overcollection. If they refuse or can’t fix it, you can file Form 843 (Claim for Refund and Request for Abatement) directly with the IRS.11Internal Revenue Service. Instructions for Form 843 – Claim for Refund and Request for Abatement Attach a copy of the Form W-2 showing the erroneous withholding and, if possible, a statement from the employer confirming how much (if anything) they’ve already refunded. On Line 8 of Form 843, explain that the FICA was withheld on retirement plan distributions that are excluded from wages under IRC Section 3121(a)(5). Supported by your 1099-R and W-2, the IRS processes these claims routinely.