High earners push Social Security tax cap debate as trust funds near depletion

Wage growth at the top of the U.S. labor market is pulling more earnings beyond Social Security’s payroll-tax cap, narrowing the base that finances benefits even as most workers keep paying the 12.4% tax on every dollar they earn. In 2025, the taxable maximum was $176,100; the Internal Revenue Service says it rises to $184,500 for 2026. That widening gap has turned the cap into the central test of whether Congress wants to raise revenue, preserve the current structure or force the program into benefit cuts.

The Social Security Administration says the taxable maximum is adjusted each year with the national average wage index, but that formula has not kept pace with decades of wage inequality. SSA data show that roughly 6% of covered workers earn above the taxable maximum in a typical year, and almost 20% of current and future covered workers are projected to cross it in at least one year. CBS reporting on the 2025 trustees report showed the share of total wages subject to Social Security taxes has fallen from almost 87% in 1984 to roughly 83% today, largely because high earners’ pay has climbed faster than everyone else’s.

That erosion matters because Social Security is already headed toward a financing cliff. The 2025 Trustees Report projects that the combined Old-Age and Survivors Insurance and Disability Insurance trust funds will be depleted in 2034 if Congress takes no action. After that, benefits would have to be cut unless lawmakers change the law. The same report puts the program’s 75-year actuarial deficit at 3.82% of taxable payroll, a gap that grows into a larger long-term strain if wages keep concentrating higher up the income ladder.

Supporters of raising or eliminating the cap say the fix would make Social Security more progressive and help restore the tax base that has been lost to top-heavy wage growth. AARP has said one option would be to apply the payroll tax to earnings above $400,000. The Committee for a Responsible Federal Budget has proposed other revenue options, including taxing earnings above $250,000. AARP also cited a 2024 survey showing broad support for tax changes to strengthen Social Security, including a higher cap.

Critics of cap changes argue that very high earners already receive benefits under the program, so any durable fix may need to pair new revenue with benefit adjustments. The 1983 reforms stabilized Social Security for decades, but they did not redesign the payroll-tax cap for a labor market in which a larger share of national income now flows to the top. That leaves Congress with a blunt choice: raise the cap, scrap it or watch the financing model drift further out of line with the economy it is supposed to cover.