The 4% rule sounds wonderfully simple: withdraw 4% of a retirement portfolio in the first year, then increase that dollar amount with inflation each year. But simplicity can become dangerous when a rule of thumb starts sounding like a commandment carved into a retirement-planning stone tablet. William Bengen’s original research found that a 4% initial withdrawal, followed by inflation-adjusted withdrawals, could support at least 30 years of retirement under the historical conditions he studied.
That makes 4% a useful starting point, not a magic number. A retiree with guaranteed income, a flexible spending budget, a long retirement horizon, or a portfolio that looks nothing like the historical portfolios behind the original research may need to choose a different percentage. Here are six reasons the famous 4% figure may not fit the retirement sitting in front of you.
