The overlapping generations model pioneered by Paul Samuelson is used to address an issue in Social Security. In the 1983 Social Security reform, Congress chose to build a substantial trust fund, with principal and interest both to be used for later benefits. That is, Congress chose payroll tax...

Social Security trust fund portfolio diversification to include some equities reduces the equity premium by raising the safe real interest rate. This requires changes in taxes. Under the hypothesis of constant marginal returns to risky investments, trust fund diversification lowers the price of...

How accurate are older people's expectations about their future Social Security benefits? Using panel data from the Health and Retirement Study, we compare respondents' observed Social Security claiming ages and benefits with subjective expectations provided during their 50s and early 60s. We...