US Payroll Tax Structure Requires FICA Contributions from Post-Claim Workers Beyond Full Retirement Age

The worker's situation stems from the pay-as-you-go design of OASI and DI trust funds, where current FICA receipts directly finance existing beneficiaries rather than accruing to individual accounts. SSA data show that individuals past full retirement age face no earnings test reductions yet remain subject to the full 7.65% combined rate split between employee and employer. This maintains revenue flows amid projected 2034-2035 depletion of the OASI reserve under intermediate trustees assumptions.

US fiscal authorities retain the tax to offset rising dependency ratios, with Census and BLS figures indicating 17% of the labor force now age 65 or older. Extending contributions from this cohort defers required adjustments to tax rates or benefit formulas. Primary records from the 1983 Greenspan Commission and subsequent trustee reports document explicit intent to broaden the contributor base without altering statutory retirement ages.

Competing interests include short-term trust fund solvency versus reduced net returns for low-wage older workers whose marginal tax payments exceed any actuarial increment in future benefits. No legislative change has altered this treatment despite repeated proposals in Ways and Means Committee records.

CBO baseline projections indicate that maintaining current payroll parameters will require either a 2.7 percentage point rate increase or 13% benefit cut after 2035 to close the 75-year shortfall.