Summary: It's one of the most important questions any retiree faces: "How much can I afford to withdraw from my portfolio each year? " Many advisors recommend the "4% rule " to their clients, but others have their doubts—especially in the wake of recent market volatility. In this interview, John Ameriks, head of Vanguard's active equity team, says research indicates that a 4% withdrawal rate, adjusted annually for inflation, remains a useful guideline for most investors.
