4% Rule Misconceptions
A general rule of thumb in retirement planning says you can spend 4% of your starting portfolio value when you retire, then adjust that amount for inflation each year, and your money will last for at least 30 years. This rule is based on safe withdrawal rate research by Bill Bengen that was published in 1994. His research looked at historical market behaviors and determined that in every 30-year time period through history, this starting withdrawal rate would have made it through the 30 years without running out of money.