Retirement researcher Bill Bengen, known for the 4% rule, warns early retirees may be living too frugally. His updated research suggests a 4.7% withdrawal rate for 30-year retirements and 4.2% for 50-year horizons. Economic indicators like market valuations, inflation trends, and interest rates should inform withdrawal decisions for early retirees. Flexibility and earning potential can affect withdrawal rates, making planning for a longer time horizon crucial.

Read more at Yahoo Finance: Early retirees may be ‘cheating themselves’ withdrawing less money, says expert behind 4% rule. Nailing the right rate