Social Security tax stops after you earn $168,600 in 2024

Social Security tax (the 6.2% withheld from your paycheck) stops once your earnings hit the annual wage cap set by the Social Security Administration. For 2024, that cap is $168,600. Once you cross that threshold, no more Social Security tax comes out of your remaining paychecks for the rest of that calendar year.

The wage cap changes every year because it is tied to national average wage growth. In 2025, the cap is $176,100. This means a higher-earning employee will stop paying Social Security tax earlier in the year than they did the previous year, but a lower-earning employee might never hit the cap at all.

The cap applies to each job separately. If you work two jobs and earn $100,000 at one and $80,000 at the other, you will pay Social Security tax on all $180,000 because each employer only knows about the wages they paid you. You would then claim the overpayment on your tax return.

Key Takeaways

  • Social Security tax stops once you earn $168,600 in 2024 (the amount changes yearly based on wage growth).
  • The wage cap applies to each job separately, so working multiple jobs can mean paying more Social Security tax than the law requires.
  • If you overpay Social Security tax across multiple jobs, you can claim the excess on your federal income tax return.
  • Self-employed workers pay both the employee and employer portions of Social Security tax and must track their own earnings against the wage cap.
  • Medicare tax (1.45% of wages) has no wage cap and continues on all earnings throughout the year.

How the wage cap works across multiple jobs

When you have more than one employer, each one withholds Social Security tax independently based only on what they pay you. Neither employer knows about your other income. This can result in overpaying Social Security tax in a single year.

For example, if you earn $90,000 at Job A and $85,000 at Job B, you will pay Social Security tax on the full $175,000 even though the 2024 cap is $168,600. You overpaid by $465.20 (6.2% of the $7,500 over the cap). When you file your federal tax return, you report this overpayment and the IRS refunds it to you.

To claim the refund, you will need to file Form 1040 and attach Schedule 2. The IRS will calculate the refund automatically if you report all your W-2 income correctly. You do not need to contact Social Security or your employers.

Self-employed workers and the wage cap

If you are self-employed, you pay both the employee portion (6.2%) and the employer portion (6.2%) of Social Security tax, for a total of 12.4%. You still stop paying once your net self-employment income hits the wage cap for that year.

You calculate this on Schedule SE (Self-Employment Tax), which is part of your tax return. If you have both W-2 income and self-employment income, you combine them to determine when you hit the cap. For instance, if you earned $150,000 in W-2 wages and $20,000 in self-employment income, you would only pay self-employment tax on $18,600 of that self-employment income (the remaining portion of the $168,600 cap for 2024).

Keep careful records of your self-employment income throughout the year so you know when you will hit the cap. This helps you plan quarterly estimated tax payments.

Medicare tax has no wage cap

While Social Security tax stops at the wage cap, Medicare tax (1.45% of your wages) continues on all earnings throughout the year with no upper limit. This means high earners pay Medicare tax on every dollar they make.

Additionally, if your income exceeds certain thresholds ($200,000 for single filers, $250,000 for married filing jointly), you pay an extra 0.9% Medicare tax on the amount over that threshold. This additional tax also has no cap and applies to both W-2 wages and self-employment income.

The wage cap changes every January

The Social Security wage cap is recalculated each year based on the average wage index from two years prior. The Social Security Administration announces the new cap in October for the following year. This is why the cap was $168,600 in 2024 and $176,100 in 2025.

Because the cap increases most years, your Social Security tax will continue longer into the year than it did the previous year, assuming your income stays the same. A worker earning $150,000 annually will hit the cap later in 2025 than they did in 2024.

You can find the current and historical wage caps on the Social Security Administration website under "Contribution and Benefit Base."

What happens after you hit the wage cap

Once you stop paying Social Security tax for the year, that money stays in your paycheck. Your take-home pay increases because the 6.2% withholding no longer applies. This is why some workers notice their paychecks get slightly larger in the later months of the year.

Stopping Social Security tax does not affect your Social Security benefits. Your benefit amount is based on your highest 35 years of earnings, and the Social Security Administration already has a record of your income up to the wage cap each year. Earning above the cap does not increase your future benefits.

Frequently Asked Questions

Can I get a refund if I overpaid Social Security tax?

Yes, but only if the overpayment happened because you worked multiple jobs. File your federal tax return with all W-2 income reported, and the IRS will calculate and refund any overpayment automatically. If you overpaid because your employer made an error, contact your employer's payroll department to request a corrected W-2.

Does earning above the wage cap hurt my Social Security benefits?

No. Your benefit is calculated from your highest 35 years of earnings, and Social Security already counts all income up to the wage cap each year. Earning $200,000 instead of $170,000 does not increase your benefit amount.

What if I work for the federal government?

Federal employees hired after 1983 pay Social Security tax on their wages and follow the same wage cap rules as private-sector workers. Some older federal employees are covered under a different system (CSRS) and do not pay Social Security tax at all.

Do I need to tell my employer when I hit the wage cap?

No. Your employer's payroll system tracks your year-to-date earnings and stops withholding Social Security tax automatically once you hit the cap. You do not need to request this or provide any documentation.

What if I change jobs mid-year?

Your new employer will not know about the wages you earned at your previous job, so they will start withholding Social Security tax from your first paycheck. If your combined earnings across both jobs exceed the wage cap, you will overpay and can claim a refund on your tax return.