Why Social Security Tax Stops Deducting: The 2026 SSA $176,100 Wage Base Cap
Understanding the FICA Tax Split: Social Security vs Medicare
If you have ever noticed your take-home pay unexpectedly jumping in October, November, or December, you likely hit the Social Security taxable maximum. Payroll taxes under the Federal Insurance Contributions Act (FICA) consist of two separate components that operate under fundamentally different rules.
The Medicare portion is 1.45% of all gross wages. There is no wage cap on Medicare; every dollar earned throughout the entire year is taxed. Furthermore, individuals earning over $200,000 ($250,000 for married couples filing jointly) are subject to an additional 0.9% Medicare surtax.
The Social Security portion (OASDI) is 6.2%. Unlike Medicare, Congress enacted a statutory maximum on the amount of earnings subject to this tax each calendar year.
What Is the 2026 Social Security Wage Cap?
For the 2026 tax year, the Social Security Administration set the contribution and benefit base at $176,100 pursuant to Section 230 of the Social Security Act. This represents the maximum cumulative income on which employee OASDI tax can be levied.
The maximum possible employee Social Security tax any worker can pay in 2026 from a single employer is $10,918.20 ($176,100 × 6.2%). Once cumulative year-to-date earnings hit this exact figure, the 6.2% deduction ceases immediately for the remainder of the calendar year.
On January 1 of the following year, the counter resets to zero, and the 6.2% withholding begins again on the first paycheck of the new year.
What Happens If You Switch Jobs Mid-Year?
The Social Security cap applies on a per-employer basis. Federal law does not allow an employer to consider wages paid to you by a previous employer during the same tax year.
If you earn $100,000 at Employer A and then move to Employer B earning another $100,000 in the same year, both employers will withhold the 6.2% tax on your first dollars. This causes you to overpay FICA taxes across the two jobs.
Fortunately, excess Social Security tax withheld is not lost. You can claim 100% of the overpayment as a refundable credit on your Form 1040 (Schedule 3, Line 11) when you file your annual tax return.
Sarah earns $16,000 per month ($192,000 annually). In November, her year-to-date cumulative earnings surpass the 2026 statutory cap of $176,100.
| January through October Earnings | $160,000 (OASDI 6.2% fully deducted) |
| November Earnings Subject to OASDI | Only $16,100 reaches the $176,100 cap |
| December Earnings Subject to OASDI | $0.00 (Exempt from Social Security tax) |
| Monthly Take-Home Increase (December) | +$992.00 in net pay |
| Medicare Tax (1.45%) Status | Continues uninterrupted (no cap) |