Eliminating the Social Security tax cap would subject every dollar of wages to the 6.2% Social Security payroll tax, instead of stopping at the annual wage limit ($184,500 in 2026). Doing so is the single largest revenue option available to shore up the program, but by itself it does not fully close the projected shortfall, and its effects depend heavily on whether the newly taxed earnings also count toward future benefits.
What the Cap Does Now
Workers pay 6.2% of wages into Social Security and employers match it, for a combined 12.4%. Self-employed workers pay both halves themselves.1Office of the Law Revision Counsel. 26 USC 3101 – Rate of Tax2Social Security Administration. If You Are Self-Employed The tax applies only up to the “contribution and benefit base,” which is $184,500 in 2026.3Social Security Administration. Contribution and Benefit Base Every dollar above that is excluded from Social Security wages by statute.4Office of the Law Revision Counsel. 26 USC 3121 – Definitions
The practical result: a worker earning $184,500 and a worker earning $2 million pay the same dollar amount into Social Security. About 6% of workers earn above the cap in any given year.5Social Security Administration. Population Profile: Taxable Maximum Earners
Why the Cap Is on the Table
When Congress last restructured Social Security in 1983, the cap was set to cover about 90% of all covered earnings nationally. Wages at the top have grown faster than average wages since, and today only around 83% of covered earnings fall below the cap.6Social Security Administration. The Evolution of Social Security’s Taxable Maximum More income escaping payroll tax means less revenue relative to what the system pays out.
The 2025 Trustees Report puts the 75-year actuarial deficit at 3.82% of taxable payroll and projects the combined trust fund reserves will run out in 2034. After that, incoming payroll taxes would cover about 83% of scheduled benefits.7Social Security Administration. 2025 OASDI Trustees Report That deadline is what keeps cap proposals in circulation.
How Much Money It Would Raise
The Social Security Administration’s Office of the Chief Actuary has scored full cap elimination two ways. Applying the payroll tax to all earnings without crediting the extra wages toward benefits would close roughly 67% of the projected 75-year shortfall. Crediting the additional earnings toward future benefits drops the improvement to about 48%, because higher taxes generate higher future payouts.8Social Security Administration. Provisions Affecting Payroll Taxes
Neither version closes the gap on its own. Full solvency would still require some combination of benefit adjustments, rate increases, or retirement age changes. In near-term budget terms, the Congressional Budget Office has estimated that subjecting all earnings above $250,000 to payroll taxes would reduce the federal deficit by roughly $122 billion in the first year alone.9Congressional Budget Office. Increase the Maximum Taxable Earnings That Are Subject to Social Security Payroll Taxes
The Three Legislative Paths
Donut Hole
The Social Security 2100 Act, introduced in the 118th Congress, keeps the current cap in place but reapplies the payroll tax on earnings above $400,000, leaving a “donut hole” of untaxed wages between the two thresholds.10United States Congress. HR 4583 – Social Security 2100 Act As the regular cap climbs with wage growth over time, it eventually meets $400,000 and the hole closes. The design targets very high earners while leaving professionals and small business owners in the mid-six figures alone.
Phased Elimination
The Social Security Enhancement and Protection Act of 2025 phases the cap out over 10 years. Earnings above the current cap would be taxed at 1.24% in 2026 (one-tenth of the full 12.4% combined rate), rising by 1.24 percentage points each year until the full rate applies to all earnings in 2035.11Social Security Administration. Office of the Chief Actuary – Letter Regarding the Social Security Enhancement and Protection Act of 2025 The staggered schedule gives workers, employers, and payroll systems time to adjust.
Immediate Full Elimination
The most aggressive path would subject all wages to the full 12.4% rate starting in a single year. No current major bill takes this approach in pure form, but it is the baseline used in actuarial modeling and produces the largest revenue gain of any single option.
The Benefit-Formula Question
The hardest design question isn’t collecting the tax. It’s what those new taxed earnings do inside the benefit formula.
Social Security benefits are calculated using the Primary Insurance Amount formula, which converts career earnings into a monthly benefit through “bend points” that give lower earners a higher replacement rate. For someone first eligible in 2026, the formula replaces 90% of the first $1,286 in average indexed monthly earnings, 32% of earnings between $1,286 and $7,749, and 15% of everything above $7,749.12Social Security Administration. Primary Insurance Amount
If the cap goes away and high earners start paying tax on all their wages, do those wages count in the formula? If yes, someone earning $1 million could eventually collect a very large monthly benefit, which cuts against the program’s role as social insurance. Most proposals handle this by either not crediting the extra earnings at all or by adding a new replacement rate well below the current 15% for earnings above the old cap. The Social Security Enhancement and Protection Act of 2025 does credit the additional taxed earnings, which is part of why its solvency improvement is more modest.11Social Security Administration. Office of the Chief Actuary – Letter Regarding the Social Security Enhancement and Protection Act of 2025
Crediting the earnings keeps the historic link between what a worker pays in and what they get back. Not crediting them turns the extra payroll tax into something closer to a pure income tax on high earners, changing the political and legal character of the program.
What It Would Cost Employers
The employer side moves in lockstep with the employee side. Employers pay 6.2% on each worker’s wages up to the cap, so lifting the cap doubles the new revenue collected and doubles the cost impact on businesses.1Office of the Law Revision Counsel. 26 USC 3101 – Rate of Tax For firms with a lot of executives, bankers, surgeons, or other above-cap earners, the increase would be substantial.
Employers that cannot absorb the cost tend to respond by trimming other compensation (retirement contributions, health benefits), raising prices, or slowing hiring. Some proposals have discussed removing the cap only on the employee side while leaving the employer share capped, which halves both the disruption and the revenue.
What Eliminating the Cap Would Not Reach
Social Security tax applies only to earned income: wages and net self-employment earnings. Investment income (capital gains, dividends, interest, rental income) is not subject to Social Security tax at all.13Social Security Administration. What Income is Included in Your Social Security Record For someone whose income comes mainly from stock options, carried interest, or a portfolio, removing the wage cap has limited effect. No major bill currently on the table extends Social Security tax to investment income, so the debate remains confined to earned wages.