Warren’s Social Security Tax Proposal Could Raise Costs for Some Retirees

A bipartisan effort to shore up Social Security is drawing new scrutiny to who contributes to the program and how much.

Elizabeth Warren and Bernie Moreno have outlined a proposal to lift the cap on Social Security payroll taxes, a change they say could improve the program’s finances while affecting higher earners who are planning for retirement benefits.

How the Social Security payroll tax cap works

The proposal to help preserve Social Security focuses on one central part of the current system: the payroll tax cap.

Workers pay Social Security payroll taxes only on wages and self-employment income up to an annual taxable maximum. Earnings above that limit are not taxed for Social Security, which means people who earn more than the cap pay the tax on a smaller share of their income.

The taxable maximum is $192,300 in 2027, up from $184,500 in 2026. Employees and employers each pay 6.2%, while self-employed workers pay the full 12.4%.

The senators' proposal to eliminate the cap

Warren and Moreno want to remove the taxable maximum so that Social Security payroll taxes would apply to earnings above $184,500 in 2026 or $192,300 in 2027 as well. They argue that doing so would strengthen the system’s solvency and lower the chance of future benefit cuts.

“The two of us are working together on legislation to remove the cap on Social Security taxes and extend the solvency of our retirement system,” Warren and Moreno wrote in a joint op-ed.

Why the Social Security tax cap remains divisive

The payroll tax cap has long been one of the most disputed features of Social Security. Supporters of change say the current setup is unfair because most workers pay Social Security taxes on all of their earnings, while people above the cap pay only on part of theirs.

“Why should a middle-class nurse pay a larger share of her paycheck than a wealthy corporate lawyer?” they wrote.

They also note that top earners’ wages have risen faster than those of average workers, leaving a larger share of high incomes above the taxable maximum and outside the payroll tax system.

Who would pay more under the plan?

Removing the cap would mainly affect workers and self-employed people earning more than $184,500 a year in 2026 or $192,300 in 2027.

People earning below the current limit would see no direct change in their Social Security payroll taxes. Those earning above it would pay more because additional income would become taxable.

That could include some retirees who are still working and earning high wages or self-employment income. Retirees living only on Social Security, pensions, investments, or withdrawals from retirement accounts would not face added payroll tax under the proposal.

How the plan could address Social Security’s funding gap

The proposal comes as Social Security faces a well-known financing challenge. The program’s trust fund is projected to run short in the future, at which point it would only be able to pay about 78% of scheduled benefits without changes.

That outcome would force automatic reductions for retirees, something lawmakers in both parties say they want to prevent. Warren and Moreno argue that requiring higher earners to contribute more is one of the most direct ways to close the gap.

“This is a no-brainer,” they wrote. “The wealthiest Americans… should contribute the same percentage of their income as a factory worker… or a teacher.”

According to an estimate cited by Warren and Moreno, removing the taxable maximum could bring about $3 trillion into Social Security over 10 years.

Why the bipartisan alliance stands out

The partnership between Warren, a Democrat, and Moreno, a Republican, stands out in a debate that is often sharply split along party lines.

“One of us is a Republican… the other is a Democrat… We don't agree on everything,” they wrote. “But here's one thing we do agree on: Congress must act now to save Social Security.”

That agreement is notable because Social Security reform has often stalled amid disputes over whether to raise taxes or cut benefits.

What opponents say about raising Social Security taxes

Not everyone backs lifting the payroll tax cap. Critics argue that higher payroll taxes could raise labor costs, reduce take-home pay, or influence compensation and hiring decisions.

Others question whether tax increases alone can solve the problem, saying long-term stability may also require changes to benefits or eligibility rules. Those competing arguments are likely to shape the debate if the proposal moves ahead.

“Social Security must remain a stable foundation to help retirees afford life's basic necessities,” Warren and Moreno wrote, saying inflation and broader economic changes make action urgent.

Bottom line

Under the approach Warren and Moreno described, workers earning below the taxable maximum would not see a direct payroll-tax increase, while people above it could pay substantially more.

The issue matters for anyone thinking about retirement security, since future rules could affect both taxes and benefits. Congress has not yet acted to address Social Security insolvency.