The 2026 Social Security wage base, and when withholding stops

The short answer

Social Security tax is 6.2% of your wages until those wages reach $184,500 for the year, and then it stops. Nobody pays more than $11,439.00 of employee Social Security tax in 2026, no matter what they earn.

Medicare has no such ceiling, so it keeps coming out of every paycheck all year, and past $200,000 of wages an extra 0.9% joins it. The result is that a high salary's paycheck gets noticeably bigger partway through the year, then gives a little of that back.

What the wage base is

The Social Security Administration sets a taxable maximum each year, and for 2026 it is $184,500. Wages above that figure are not subject to the 6.2% employee Social Security tax, and they also do not count toward the earnings record that determines a future benefit. The cap moves with national average wages, which is why it rises most years.

Medicare works differently. The 1.45% employee Medicare tax applies to every dollar of wages with no ceiling at all, and there is a further 0.9% Additional Medicare Tax on wages above $200,000. So "FICA stops" is never quite true. Only the Social Security half of it stops.

When it stops, by salary

A level salary paid in equal monthly amounts through the year, 2026 figures. The last column uses biweekly pay, since that is what most people are asking about when they ask how much bigger the check gets.
Salary	Social Security stops	Withheld for the year	Additional Medicare starts	Bigger biweekly check, after
$180,000	Never, stays under	$11,160.00	Never	No change
$200,000	December	$11,439.00	Never	+$476.92
$250,000	September	$11,439.00	October	+$596.15
$300,000	August	$11,439.00	September	+$715.38
$400,000	June	$11,439.00	July	+$953.85

The month is where a level salary's year-to-date wages first reach $184,500. A real paycheck lands on a specific date, so a biweekly or semimonthly schedule can put the crossing a week or two either side of the month shown. Bonuses, commissions, and raises pull it earlier.

What the paycheck actually does

Take the $250,000 row and pay it every two weeks. Here is one check, and what happens to it twice during the year.

One biweekly paycheck at $250,000

FICA lines only. Income tax, state tax, and benefits are not shown.

Gross per check: $9,615.38
Social Security, 6.2%, through September: $596.15
Medicare, 1.45%, all year: $139.42
Additional Medicare, 0.9%, from October: $86.54
Net change once Social Security stops: +$596.15

Two things happen, in this order, and the order is not a coincidence. The wage base sits below the Additional Medicare threshold, so for any level salary the paycheck rises first. In September the 6.2% line disappears and the check gains $596.15. Then in October the 0.9% line appears and the check gives back $86.54, leaving it $509.62 above where it started.

None of that is a raise. It is the same annual salary arriving unevenly, which is worth knowing before you plan around a bigger-looking autumn paycheck. It also reverses in January, when the counters reset and the 6.2% comes back.

A job change starts the count over

Each employer tracks the wage base against the wages it paid you. An employer has no way to know what a previous or concurrent employer already withheld, and the IRS instruction is that each one withholds up to the annual limit on its own payroll.

So someone who changes jobs mid-year, or holds two at once, can pay more than the year's maximum. Two jobs paying $150,000 each will each withhold $9,300.00, or $18,600.00 together, against a true maximum of $11,439.00.

Two employers, one year

$150,000 from each, both under the wage base on their own

Withheld by each employer: $9,300.00
Withheld in total: $18,600.00
Actual maximum for the year: $11,439.00
Excess, recovered on the return: $7,161.00

That excess is not lost. When more than one employer withheld and the total went past the year's limit, the excess is claimed as a credit against income tax on the return, which means it comes back in the refund rather than in a corrected paycheck. Nothing needs to be done at the time; the correction happens at filing.

Additional Medicare follows a different rule

The 0.9% Additional Medicare Tax has two thresholds that are easy to confuse. An employer withholds it on wages above $200,000, and the IRS is explicit that this applies without regard to filing status: payroll does not know or care whether you are married. The threshold at which you actually owe the tax does depend on filing status: $200,000 for a single or head-of-household filer, $250,000 on a joint return, and $125,000 filing separately. None of the three is indexed to inflation.

The mismatch cuts both ways. A married couple filing jointly with two $150,000 jobs has neither employer over the withholding trigger, so nothing is withheld, and yet the couple owes $450.00 on the wages above their $250,000 joint threshold. A married-separate filer can owe it on wages well under the withholding trigger too. In the other direction, a single filer with two jobs can have too much withheld and settle it on the return.

What this does not cover

Uneven pay. Every figure assumes a level salary spread evenly across the year. A bonus, commission, overtime, or a mid-year raise moves the crossing earlier.
Self-employment. A self-employed person pays both halves of Social Security and Medicare through self-employment tax, against the same wage base but on a different form.
The employer's half. Employers pay a matching 6.2% and 1.45%. There is no employer match on the 0.9% Additional Medicare Tax. None of that appears on your paycheck, and none of it is covered here.
Pre-tax deferrals. A traditional 401(k) contribution reduces income tax but not Social Security or Medicare wages, so it does not move any date on this page. A payroll HSA or Section 125 premium does reduce FICA wages and can push the crossing later.
Advice. These are planning estimates on published 2026 figures, not tax advice and not your exact withholding.