Social Security could have lasted until 2059, so where did $10.8 trillion go? AARP reveals the income shift behind its 2034 funding crisis

Social Security could have paid full benefits for another 25 years if a larger share of American income had remained subject to payroll taxes, according to a new AARP report. The study estimates that the programme lost $10.8 trillion in potential revenue between 1984 and 2034 as more national income moved beyond the reach of Social Security taxes.

The finding puts a different focus on the programme's financial problems, which are still expected to push its combined trust funds towards depletion in 2034.

The 2059 figure comes from a hypothetical calculation by the AARP Public Policy Institute. It does not replace the government's latest forecast.


The 2026 Social Security Trustees Report still projects that the combined retirement and disability trust funds will run out of reserves in the third quarter of 2034. After that, incoming revenue would cover around 83% of scheduled benefits.

The retirement and survivors insurance fund faces an earlier deadline. Its reserves are projected to run out in the fourth quarter of 2032. At that point, continuing revenue would cover about 78% of scheduled retirement benefits.

AARP's research asks what might have happened if the share of the US economy covered by Social Security payroll taxes had remained at its 1980s level. The report estimates that the programme could have collected an additional $10.8 trillion from 1984 to 2034. That money, under its scenario, could have kept full benefits funded until 2059.

Social Security payroll taxes now cover a smaller share of the economy

The report identifies a major change in how Americans earn money.

In 1984, wages subject to Social Security payroll taxes represented about 41% of US gross domestic product. By 2025, that share had fallen to 34%. AARP expects it to remain around that level for decades.

Social Security receives most of its funding through a 12.4% payroll tax. Workers and employers each contribute 6.2%. However, the tax applies only to earnings below an annual limit.

That limit is $184,500 in 2026. It will increase to $192,300 in 2027. Earnings above the limit are not subject to Social Security payroll taxes. About 6% of covered workers earn at or above the taxable maximum.

Four changes have contributed to the shrinking tax base. A larger share of wages now goes to high earners whose income exceeds the annual limit. More national income goes to corporate profits and investments instead of wages. Some business owners receive income as business profits rather than salaries. Capital gains, dividends and interest income are mostly outside the Social Security payroll tax system.

The result is a gap between the growth of the American economy and the income on which Social Security collects taxes.

Social Security reserves fell by $160 billion in 2025

The funding problem is already visible in the government's latest figures.

The combined Social Security trust fund reserves declined by $160 billion during 2025, ending the year at approximately $2.56 trillion. The Trustees also expect programme costs to exceed total income in 2026 and remain higher throughout the 75-year projection period.

The new AARP report adds another explanation to the familiar debate about an ageing population and fewer workers supporting more retirees. It argues that changes in income distribution have also weakened the programme's revenue.

AARP wants Congress to raise the Social Security tax cap

AARP's proposed solution centres on collecting more revenue rather than reducing retirement benefits.

One option is to raise or remove the annual payroll tax limit. Social Security actuaries estimate that removing the cap could close around 67% of the programme's 75-year funding gap if workers receive no additional benefits for the extra taxed earnings. The figure falls to about 50% if those earnings generate additional benefits.

Another proposal is to apply contributions to certain investment or business income. Rich Johnson, an AARP vice president and author of the report, says this approach would generally generate less revenue than removing the wage cap. Its impact would depend on the design of the law.

AARP represents Americans aged 50 and older. Its report supports a particular policy approach and does not include responses from groups that favour benefit reductions.

What the latest Social Security changes mean for retirees

For current beneficiaries, the report does not change monthly payments or retirement eligibility.

There is a separate increase coming in 2027. The Social Security Administration has announced a 3.6% cost-of-living adjustment (COLA), which will raise average retirement benefits by about $75 a month from January. The taxable earnings limit will also rise from $184,500 to $192,300.

These adjustments offer some immediate relief to beneficiaries, but they do not resolve the long-term funding problem.

AARP's post-election polling found that 80% of voters and 90% of older voters consider protecting Social Security from benefit cuts very or extremely important. Any major change to payroll taxes, investment income contributions or benefits would require congressional action.