Research & Analysis by Andrew G. Biggs
Using the Social Security Administration's MINT (Modeling Income in the Near Term) model, this paper calculates the marginal returns to work near retirement, as measured by the increase in benefits associated with an additional year of employment at the end of an individual's work life. With exceptions for certain population subgroups, the analysis finds that marginal returns on Social Security taxes paid near retirement are generally low. The paper also tests the effects on marginal returns of a variety of potential Social Security policy changes designed to improve incentives to work.
Using the Social Security Administration's MINT (Modeling Income in the Near Term) model, this paper analyzes the progressivity of the Old-Age, Survivors and Disability Insurance (OASDI) program for current and future retirees. It uses a progressivity index that provides a summary measure of the distribution of taxes and benefits on a lifetime basis. Results indicate that OASDI lies roughly halfway between a flat replacement rate and a flat dollar benefit for current retirees. Projections suggest that progressivity will remain relatively similar for future retirees. In addition, the paper estimates the effects of several policy changes on progressivity for future retirees.
Replacement rates are common and useful tools used by individuals and policy analysts to plan for retirement and assess the sufficiency of Social Security benefits and overall retirement income. Because the calculation and meaning of replacement rates differs depending on the definition of preretirement earnings, this article examines four alternative measures: final preretirement earnings, constant income payable from the present value of lifetime earnings (PV payment), wage-indexed average of lifetime earnings, and inflation-adjusted average of lifetime earnings (CPI average). The article also calculates replacement rates for Social Security beneficiaries aged 64–66 in 2005.
Poverty-level Annuitization Requirements in Social Security Proposals Incorporating Personal Retirement Accounts
In the current discussions of Social Security reform, voluntary personal retirement accounts have been proposed. Recent research and debate have focused on several aspects of these accounts, including how such accounts would affect aggregate saving, system finances, and benefit levels. Little attention, however, has been paid to policies that would govern the distribution of account balances. This analysis considers such policies with respect to the annuitization of account balances at retirement using the Social Security Administration's Modeling Income in the New Term (MINT) model and a modified version of a recent legislative proposal to evaluate the effects of partial annuitization requirements.
The 2001 report of the Social Security trustees projected that the combined trust funds for the Old-Age and Survivors Insurance and Disability Insurance programs will be exhausted in 2038. This analysis explains the effects of insolvency on future retirement benefits and poverty rates of beneficiaries if no action is taken to strengthen Social Security.