In 2026, you pay 6.2% of your wages into Social Security, up to the first $184,500 you earn. Your employer pays another 6.2% on top of that, so 12.4% of your covered pay reaches the program in total. The most that can come out of your paycheck for Social Security in a single year is $11,439. If you work for yourself, you owe the full 12.4% on your net self-employment income, though a deduction offsets part of the cost.
The 6.2% Employee Rate
Federal law splits the Social Security tab evenly between you and your employer. You pay 6.2% of your gross wages, and your employer matches that with an identical 6.2%.1Office of the Law Revision Counsel. 26 USC 3101 – Rate of Tax2Office of the Law Revision Counsel. 26 USC 3111 – Rate of Tax The combined 12.4% funds the Old-Age, Survivors, and Disability Insurance program, which is the formal name for Social Security. Your share is withheld automatically from each paycheck.
Social Security tax is separate from Medicare tax. Medicare adds another 1.45% from you and 1.45% from your employer, plus a 0.9% surcharge on wages above $200,000 for single filers or $250,000 for married couples filing jointly.3Internal Revenue Service. Questions and Answers for the Additional Medicare Tax The Medicare surcharge is a different pot of money. The Social Security portion stays fixed at 6.2% for both you and your employer, with no surcharge at any income level.4Internal Revenue Service. Topic No. 751, Social Security and Medicare Withholding Rates
The 2026 Wage Cap and Your Maximum
Social Security tax only applies to a set amount of earnings each year, known as the contribution and benefit base. In 2026, that cap is $184,500. Every dollar you earn above that amount is free from the 6.2% withholding for the rest of the calendar year. If your wages hit or exceed the cap, the most that comes out of your pay for Social Security is $11,439, and your employer pays the same.5Social Security Administration. Contribution and Benefit Base
The cap adjusts every January based on changes to the national average wage index.6Social Security Administration. National Average Wage Index For context, it was $168,600 in 2024 and $176,100 in 2025, so it has been climbing steadily.5Social Security Administration. Contribution and Benefit Base High earners often notice their take-home pay jumping late in the year, once cumulative wages pass the threshold and the 6.2% stops.
Medicare tax works differently. It has no wage base limit at all, so the 1.45% keeps coming out of every dollar you earn no matter how high your income goes.7Social Security Administration. What Is the Current Maximum Amount of Taxable Earnings for Social Security
If You’re Self-Employed
Working for yourself as a freelancer, independent contractor, or sole proprietor means there is no employer to pick up half the bill. You owe the full 12.4% Social Security tax on your net self-employment income, plus the full 2.9% Medicare tax.8Office of the Law Revision Counsel. 26 USC 1401 – Rate of Tax The 0.9% Additional Medicare Tax kicks in once your self-employment income exceeds $200,000 (single) or $250,000 (married filing jointly).
One detail trips people up: you don’t actually owe 12.4% on every dollar of net profit. The IRS first reduces your net earnings to 92.35% of the total before applying the tax rate.9Internal Revenue Service. Topic No. 554, Self-Employment Tax This adjustment puts self-employed workers on roughly equal footing with traditional employees, whose employer’s share of payroll tax is never counted as part of their income. The math happens on Schedule SE of your tax return.
You also get a deduction equal to half of your total self-employment tax, claimed on Schedule 1 of Form 1040. It reduces your adjusted gross income whether you itemize or not.9Internal Revenue Service. Topic No. 554, Self-Employment Tax The deduction doesn’t lower the self-employment tax itself, but it does shrink the income subject to your regular income tax.
Unlike employees who have taxes taken out every pay period, self-employed workers send payments directly to the IRS throughout the year. For 2026, estimated payments are due April 15, June 15, September 15, and January 15, 2027.10Taxpayer Advocate Service. Making Estimated Payments Missing these deadlines triggers an underpayment penalty based on how much you owed and how long it went unpaid.11Internal Revenue Service. Underpayment of Estimated Tax by Individuals Penalty That rate moves with IRS-published quarterly interest rates.
What Counts as Taxable Earnings
Your regular wages, hourly pay, overtime, bonuses, commissions, and tips all count toward Social Security taxes. So does severance pay in most cases, along with third-party sick pay received within six months of your last month of work.12Internal Revenue Service. Employers Supplemental Tax Guide, Publication 15-A Employers report all of this on your W-2.13Internal Revenue Service. About Form W-2, Wage and Tax Statement
Some fringe benefits are taxable too. If your employer provides group-term life insurance coverage above $50,000, the imputed cost of the excess coverage is subject to Social Security tax.14Internal Revenue Service. Group-Term Life Insurance Personal use of a company car, educational assistance over $5,250 per year, and dependent care benefits above $7,500 also get withheld.15Internal Revenue Service. Employers Tax Guide to Fringe Benefits, Publication 15-B
What doesn’t count: investment dividends, interest on savings, capital gains, and pension or retirement plan distributions. These are unearned income and fall outside the Social Security tax system entirely. Someone living mostly on investment income could have a high total income and owe little or nothing in Social Security tax.
When Too Much Gets Withheld
If you hold two or more jobs, each employer withholds the 6.2% independently. Neither knows what the other is doing. When your combined wages exceed the $184,500 cap, more Social Security tax comes out than you actually owe. You claim the excess as a credit on your federal income tax return.16Internal Revenue Service. Topic No. 608, Excess Social Security and RRTA Tax Withheld The Form 1040 instructions walk through the calculation.
The process is different if a single employer withholds too much. You can’t claim the credit on your tax return in that case. Your employer is responsible for correcting the error, and if they refuse or fail to do so, you can file Form 843 to request a refund directly from the IRS, attaching your W-2s as proof.16Internal Revenue Service. Topic No. 608, Excess Social Security and RRTA Tax Withheld If you file jointly, you and your spouse calculate any excess separately.
Who Doesn’t Pay
Most workers pay in, but a few narrow categories are legally exempt:
- Nonresident alien students and scholars in the U.S. on F-1, J-1, or M-1 visas for fewer than five calendar years, on wages from qualifying campus employment or authorized practical training.17Internal Revenue Service. Foreign Student Liability for Social Security and Medicare Taxes
- Students enrolled at least half-time at a college or university who work for that same institution, regardless of citizenship status.17Internal Revenue Service. Foreign Student Liability for Social Security and Medicare Taxes
- Members of recognized religious sects opposed to insurance, who apply using IRS Form 4029. Approval permanently waives all future Social Security benefits.18Social Security Administration. Method of Obtaining Exemption – Process
- Some state and local government employees covered by a qualifying public retirement system outside a Section 218 agreement with the Social Security Administration. This mainly affects certain police, firefighter, and teacher pension systems.19Social Security Administration. Section 218 Agreements
- Workers already taxed by a foreign social security system under a totalization agreement between the U.S. and that country.2Office of the Law Revision Counsel. 26 USC 3111 – Rate of Tax
These exemptions are narrow, and most require an approved application or a specific immigration or employment status. The burden is on you to establish eligibility, not simply to opt out.
What You Pay Shapes What You Get
The wage base doesn’t just limit how much tax you owe. It also caps the earnings used to calculate your future benefits. The Social Security Administration tracks your taxable earnings each year and uses your highest 35 years of indexed earnings to determine your monthly retirement check. Paying in more, up to the cap, means a larger benefit later.
Check your earnings record at ssa.gov through a my Social Security account. If an employer underreported your wages or a year of work never showed up, your benefit calculation will be lower and you won’t know unless you look. The sooner you catch a mistake, the easier it is to fix while you still have pay stubs and W-2s to prove the discrepancy.