The Social Security wage base is the maximum amount of wages subject to Social Security tax in a year. For 2026, the Social Security wage base is $184,500. Once your wages from an employer reach that amount, the 6.2% Social Security tax stops for the rest of the year, and your paychecks get bigger.
The cap only applies to Social Security. Medicare tax continues on every dollar, and an extra 0.9% Medicare tax can start at higher wages. This guide shows exactly when withholding stops, what it does to a high earner's take-home pay, and how the cap works with two jobs or self-employment income.
Key 2026 figures
| Item | 2026 amount |
|---|---|
| Social Security wage base | $184,500 |
| Employee Social Security rate | 6.2% |
| Maximum employee Social Security tax | $11,439 |
| Employer Social Security rate | 6.2% (up to the same $184,500) |
| Self-employed Social Security rate | 12.4% on 92.35% of net earnings, up to $184,500 |
| Medicare rate | 1.45%, no wage base |
| Additional Medicare Tax withholding | 0.9% on wages over $200,000 |
The Social Security Administration sets the wage base each year, generally adjusting it based on changes in national average wages. Because it usually rises, check the current year's figure rather than reusing last year's.
When Social Security withholding stops: a $250,000 example
Take a single filer in Massachusetts earning a $250,000 salary, paid biweekly. Each paycheck's gross pay is $9,615.38, and Social Security on a full check is $596.15.
| Paycheck | Year-to-date wages after check | Social Security withheld | Additional Medicare withheld |
|---|---|---|---|
| 1 to 19 | Up to $182,692.31 | $596.15 each | $0 |
| 20 | $192,307.69 | $112.08 | $0 |
| 21 | $201,923.08 | $0 | $17.31 |
| 22 to 26 | Up to $250,000 | $0 | $86.54 each |
On paycheck 20, only $1,807.78 of wages remain under the cap, so Social Security drops to $112.08. From paycheck 21 on, Social Security is zero. For a calendar-year biweekly schedule, that happens in the fall.
The worker's take-home pay jumps by $596.15 per check once Social Security stops, then dips by $86.54 per check when Additional Medicare Tax starts. Regular Medicare at 1.45% ($139.42 per check) continues all year. Over the year, Social Security totals about $11,439 and Additional Medicare Tax about $450.
The Massachusetts paycheck calculator spreads these taxes evenly across the year, so it shows an average Social Security amount of $439.96 per paycheck rather than the front-loaded pattern above. The annual totals match. Massachusetts employees also contribute to the state's paid family and medical leave program, which isn't included here.
Who reaches the wage base
Only workers whose wages from a single employer exceed $184,500 in the year hit the cap through payroll. That includes high salaries, but also:
- Workers with large bonuses or commissions late in the year
- Employees with significant taxable equity compensation, such as vested restricted stock
- People who change jobs or hold two jobs with combined wages over the cap (covered below)
Pre-tax health premiums and HSA contributions reduce Social Security wages, so they delay the point at which you reach the base. Traditional 401(k) deferrals don't, since they're still subject to Social Security tax.
At exactly $184,500, a worker pays Social Security on every paycheck and lands right at the $11,439 maximum by year-end. Anything earned above that is free of the 6.2%.
Two jobs or a job change
Each employer applies the wage base separately. Neither knows what the other paid you, so each withholds Social Security on up to $184,500.
Say you earn $120,000 at one job and $110,000 at another in the same year. Employer one withholds $7,440 and employer two withholds $6,820, for $14,260 total. Your maximum for the year is $11,439, so $2,821 was over-withheld.
You get that excess back as a credit when you file your federal income tax return. The employers don't get their extra matching share refunded. If a single employer withheld too much (for example, a payroll error), you'd ask that employer to correct it instead. Our guide to filling out a W-4 with two jobs covers the income tax side of holding two jobs.
Wages plus self-employment income
The same $184,500 cap covers wages and self-employment earnings combined. When you figure self-employment tax on your return, your W-2 Social Security wages count toward the cap first. If your wages already reached $184,500, your self-employment income owes only the 2.9% Medicare portion of self-employment tax.
For example, a worker with $150,000 in W-2 wages and a side business has $34,500 of room left under the cap for the 12.4% Social Security portion. IRS guidance on self-employment tax walks through the calculation, and our article on Social Security tax compares the employee and self-employed rates.
What the wage base means for planning
- Budget for the change. High earners see a raise in take-home pay late in the year, then a drop in January when Social Security restarts. Building a budget on the larger checks can leave you short early in the year.
- Bonuses can move the date. A big bonus early in the year pushes you to the cap sooner.
- Medicare has no cap. Medicare continues at 1.45%, and the 0.9% Additional Medicare Tax applies above $200,000 in wages from one employer. See what Additional Medicare Tax is for how liability differs by filing status.
- State payroll taxes have their own limits. Some state programs use the Social Security wage base as their cap and others use different limits. Connecticut's paid leave contribution, for example, is 0.5% of wages up to $184,500.
To estimate your own paychecks, enter your salary in the paycheck calculator. It handles the cap and Additional Medicare Tax for any state, including high-tax states like California.
Frequently Asked Questions
What is the Social Security wage base for 2026?
$184,500. Wages above that amount aren't subject to the 6.2% Social Security tax for the rest of the year, so the maximum employee tax is $11,439.
Does Medicare stop at the wage base too?
No. Medicare tax of 1.45% applies to all wages, and employers withhold an extra 0.9% once your wages from them pass $200,000.
What if I had too much Social Security withheld from two jobs?
Claim the excess as a credit on your federal income tax return. It reduces your tax due or increases your refund.
Does the wage base reset each year?
Yes. Social Security withholding starts again with your first paycheck of the new year, under that year's wage base.
Sources
- SSA: Contribution and Benefit Base
- IRS Topic 751: Social Security and Medicare Withholding Rates
- IRS Topic 560: Additional Medicare Tax
- IRS: Self-Employment Tax (Social Security and Medicare Taxes)
Run the numbers for your state
Written and checked against IRS, Social Security Administration and state tax agency publications for the 2026 tax year. General information, not tax, legal or financial advice. Read our editorial policy, calculation methodology and sources.