Measuring Retirement Income Adequacy: Calculating Realistic Income Replacement Rates
A key weakness of many retirement income models is that they use average estimates for life expectancy, and, consequently, provide workers with only a 50 percent chance of having adequate income in retirement. But a new study by the nonpartisan Employee Benefit Research Institute (EBRI) uses expanded risk analysis and provides a range of probabilities of success. The EBRI model finds that the amount of money Americans will need for an adequate retirement varies widely based on individual factors and often is substantially higher than previously estimated.

