Summary: The 2026 Social Security wage base is $184,500, up from $176,100 in 2025. Earnings up to that amount are subject to the 6.2 percent Social Security tax from both employer and employee; earnings above it are exempt from Social Security tax. The maximum 2026 Social Security tax is $11,439 per side, or $22,878 combined. Medicare tax has no wage base and applies to all earnings.
Every fall the Social Security Administration announces a number that quietly changes payroll math for millions of workers: the contribution and benefit base, better known as the wage base. For 2026 it is $184,500. Here is what the number means, why it moves, and how to handle it in payroll.
The wage base is the annual cap on earnings subject to Social Security tax. In 2026, the first $184,500 a worker earns is taxed at 6.2 percent for Social Security, split evenly between employer and employee. Dollar number 184,501 and beyond is exempt from Social Security tax entirely. The same cap limits the earnings that count toward the worker's future benefit calculation, which is why it is called the contribution and benefit base.
The base moves with average wage growth, not inflation. The 2026 figure is $8,400 above the 2025 base of $176,100, reflecting wage growth in the economy. In most years it rises; it has never fallen. About 6 percent of workers earn above the base in a given year, so for the vast majority of payrolls the base is a factoid, not a factor.
At the 2026 base, the maximum Social Security tax is $11,439 from the employer and $11,439 from the employee, $22,878 combined per worker. A worker earning exactly $184,500 pays the max; a worker earning $300,000 pays the same $11,439 per side, because the tax stops at the base. Medicare, with no base, keeps going: 1.45 percent per side on the full $300,000, or $4,350 each.
Self-employed workers pay both halves as SECA tax: 12.4 percent on net earnings up to $184,500, for a maximum of $22,878, plus 2.9 percent Medicare on all net earnings. The wage base applies per person across all their work, which creates a wrinkle for people with two jobs.
The wage base applies separately to each employer. If a worker earns $120,000 at each of two jobs, both employers withhold and pay Social Security tax on the full $120,000, even though the worker's combined $240,000 exceeds the base. The worker gets the employee-side overpayment back as a credit on their tax return; the employers do not get refunds. There is no mechanism for a second employer to know about the first job's wages, so over-withholding across multiple employers is routine and expected.
Payroll systems track year-to-date wages per worker and simply stop the Social Security calculation at $184,500. If you run payroll manually, the rule is: for each paycheck, apply 6.2 percent to the smaller of the paycheck amount and the remaining room under the base. When a high earner's cumulative wages cross the base mid-year, their take-home pay visibly jumps, which is a good moment to remind them it is the tax stopping, not a raise.
The wage base is indexed to average wage growth across the economy, not to consumer prices. When wages grow faster than inflation, as they have in most recent years, the base climbs faster than the cost of living. The 2026 increase of $8,400 over 2025 reflects that wage growth. Since the base has never decreased, employers should budget for it rising most years and plan high-earner payroll accordingly.
There is a perennial policy debate about eliminating the wage base entirely, which would subject all earnings to Social Security tax. Proposals surface in most Congresses and none has passed. For planning purposes, assume the base keeps rising with wages; any legislative change would arrive with long lead time and grandfathering debates, not as a surprise.
$184,500, up from $176,100 in 2025. Earnings up to that amount are subject to the 6.2 percent Social Security tax; earnings above it are not.
$11,439 for the employer and $11,439 for the employee per worker ($22,878 combined). Self-employed workers pay up to $22,878 themselves.
No. Medicare tax at 1.45 percent per side applies to all wages with no cap. Only the Social Security portion has a wage base.
Each employer withholds separately, so you may overpay the employee share. You claim the excess as a credit on your tax return. Employers do not get refunds.
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Figures: 2026. Sources: the Social Security Administration (2026 contribution and benefit base), the Internal Revenue Service (FUTA, deposit rules), and the US Department of Labor. This page is for planning only and is not financial, tax, or legal advice. Verify with the cited source or a qualified professional.