The Social Security employee tax is a mandatory payroll deduction of 6.2% taken from your wages, up to a cap of $184,500 in 2026.1Social Security Administration. Contribution and Benefit Base Your employer withholds it automatically each pay period and matches it with another 6.2% from company funds. The money funds Old-Age, Survivors, and Disability Insurance (OASDI), the federal program most people just call Social Security.2Internal Revenue Service. Topic No. 751, Social Security and Medicare Withholding Rates
It’s part of FICA, the Federal Insurance Contributions Act, and is separate from the 1.45% Medicare deduction that also comes out of your check.2Internal Revenue Service. Topic No. 751, Social Security and Medicare Withholding Rates The specific statute setting the rate is 26 U.S.C. § 3101.3Office of the Law Revision Counsel. 26 USC 3101 Rate of Tax
The 2026 Rate and Wage Base
The employee rate is a flat 6.2% on every dollar of wages until your year-to-date earnings hit the annual wage base. In 2026 that base is $184,500.1Social Security Administration. Contribution and Benefit Base Once you cross it, the 6.2% withholding stops for the rest of the calendar year, and your employer’s matching contribution stops with it.
The most any single employee can pay into Social Security in 2026 is $11,439 (6.2% of $184,500). The wage base rises most years with the national average wage index. It was $168,600 in 2024 and $176,100 in 2025.
Only wages and salary count. Pension payments, annuities, interest, dividends, and investment gains are not subject to Social Security tax, even though they may show up elsewhere on your income tax return.4Social Security Administration. What Income Is Included in Your Social Security Record?
A note on Medicare, since the two often get confused: the extra 0.9% Medicare surtax on wages above $200,000 ($250,000 for joint filers) has no Social Security counterpart. The 6.2% rate is flat, and it stops at the wage base.
What the Tax Pays For
Your 6.2% funds three categories of benefits under OASDI. Retired workers draw monthly payments based on their lifetime earnings. Surviving spouses and children of deceased workers receive support. And workers who become disabled and can no longer earn a living can claim from the same pool.
None of it goes to Medicare. That’s the separate 1.45% line on your pay stub, tracked and funded independently.2Internal Revenue Service. Topic No. 751, Social Security and Medicare Withholding Rates
How the Withholding Happens
You don’t calculate this yourself. Each pay period, your employer takes 6.2% of your gross wages, holds it back, adds its own matching 6.2%, and deposits the combined amount with the IRS.5Internal Revenue Service. Understanding Employment Taxes The Social Security Administration uses those deposits to build a record of your lifetime earnings, and that record eventually determines your benefit amount.
If you were classified as an independent contractor but really work as an employee — set schedule, employer control over how you do the job — you can use IRS Form 8919 to report and pay only the employee’s share of Social Security and Medicare taxes on your own return, rather than the full self-employment amount.6Internal Revenue Service. Independent Contractor (Self-Employed) or Employee?
Refunds If You Worked Multiple Jobs
Each employer withholds Social Security tax on your wages independently. Neither one sees what the other has taken out. If you worked two or more jobs in 2026 and your combined wages pushed your total withholding past $11,439, you get the excess back as a credit on your federal income tax return.7Internal Revenue Service. Topic No. 608, Excess Social Security and RRTA Tax Withheld The Form 1040 instructions walk through the math. If you file jointly, you and your spouse calculate any excess separately; you can’t combine wages to claim a larger credit.
If You’re Self-Employed
The 6.2% employee rate applies to wages, so if you work for yourself the rules change. Under the Self-Employment Contributions Act, you owe both halves of Social Security tax on your net earnings — the full 12.4% — plus 2.9% for Medicare, for a combined self-employment tax of 15.3%.8Office of the Law Revision Counsel. 26 USC 1401 Rate of Tax9Internal Revenue Service. Self-Employment Tax (Social Security and Medicare Taxes)
You don’t pay it on your full profit. First multiply your net self-employment earnings by 92.35%; that adjusted figure is what the 15.3% applies to. You then deduct half of the resulting self-employment tax from your adjusted gross income on Form 1040, which reduces your income tax but not the self-employment tax itself.10Internal Revenue Service. Topic No. 554, Self-Employment Tax The calculation goes on Schedule SE.
Because nobody is withholding for you, the IRS expects quarterly estimated payments. The deadlines are April 15, June 15, September 15, and January 15 of the following year.11Internal Revenue Service. Individuals 2 – When Are Quarterly Estimated Tax Payments Due? Miss them and you face an underpayment penalty at the federal short-term rate plus three points, which was 7% annualized as of early 2026.12Internal Revenue Service. Quarterly Interest Rates You generally avoid the penalty if you’ll owe less than $1,000 at filing, or if you paid at least 90% of the current year’s tax or 100% of last year’s.13Internal Revenue Service. Estimated Taxes
Who Doesn’t Pay the Tax
Most workers pay on every dollar up to the wage base, but a few narrow categories are exempt.
Students working for their school. If you’re enrolled at least half-time and work for the same college or university, your wages may be exempt from Social Security and Medicare taxes. The job has to be incidental to your studies. If you qualify for retirement plan contributions, paid vacation, or employer-provided life insurance, the exemption doesn’t apply.14Internal Revenue Service. Student FICA Exception
Foreign students and exchange visitors. Nonresidents on F-1, J-1, or M-1 visas who have been in the U.S. fewer than five calendar years are generally exempt on wages from authorized, visa-related work.15Internal Revenue Service. Foreign Student Liability for Social Security and Medicare Taxes Once you become a resident alien or shift to a non-exempt status, the exemption ends.
Members of certain religious groups. Members of recognized groups that have continuously existed since December 31, 1950 and are conscientiously opposed to accepting insurance benefits can apply using IRS Form 4029. The exemption is permanent: it also waives all future Social Security and Medicare benefits.16Internal Revenue Service. Form 4029, Application for Exemption From Social Security and Medicare Taxes and Waiver of Benefits Ministers and Christian Science practitioners use Form 4361 under different rules.
Household workers below the wage threshold. If you hire a nanny, housekeeper, or home health aide, you only owe Social Security and Medicare taxes on their wages if you pay them $3,000 or more in cash during 2026.17Social Security Administration. Household Worker Below that, the earnings aren’t covered and won’t appear on the worker’s Social Security record. Household workers under 18 are also exempt unless the work is their primary occupation.
What Paying the Tax Buys You
The 6.2% isn’t only a cost. It’s how you earn future eligibility. In 2026, you get one Social Security credit for every $1,890 in wages or self-employment income, up to four credits a year.18Social Security Administration. Quarter of Coverage Forty credits — about ten years of work — qualifies you for retirement benefits.19Social Security Administration. How You Become Eligible for Benefits Fewer credits may still qualify you or your family for disability or survivor benefits, depending on your age and how recently you worked.
The size of your eventual monthly benefit is based on your highest 35 years of earnings, so hitting the 40-credit threshold is only the entry point. Years of low or zero earnings pull that average down, which matters if you’re weighing an early retirement or an extended break from paid work.