This paper describes how three money's worth measures the benefit-to-tax ratio, the internal rate of return, and the net present value are calculated and used in analyses of social security reforms, including systems with privately managed individual accounts invested in equities. Declining...

Many advocates of social security privatization argue that rates of return under a defined contribution individual account system would be much higher for all than they are under the current social security system. This claim is false. The mistake comes from ignoring accrued benefits already...

Recent changes legislated in the U.S. Social Security system are changing the economic incentives to work and retire. Some older workers will respond to these new incentives by retiring at different ages. This paper evaluates the signs and magnitudes of these responses. Using a representative...