
What is the 4% withdraw rule?
The 4% withdrawal rule, also known as the “4% rule,” is a guideline often used in retirement planning to determine a sustainable withdrawal rate from a retirement portfolio. It suggests that a retiree can withdraw 4% of their initial portfolio value in the first year of retirement, adjust that amount for inflation in subsequent years, and have a high likelihood of the portfolio lasting for a 30-year retirement period.
The rule was popularized by a study conducted in the 1990s by William Bengen, a financial planner. Bengen analyzed historical market data and retirement scenarios to determine a withdrawal rate that would provide a reasonable level of income while preserving the longevity of the portfolio.
According to the 4% rule, a retiree could withdraw 4% of their portfolio in the first year of retirement. Subsequently, the annual withdrawal amount is adjusted for inflation to maintain the purchasing power of the withdrawals. The assumption is that a diversified portfolio of stocks and bonds will generate returns that outpace inflation, allowing the portfolio to sustain the withdrawals over the long term.
It’s important to note that the 4% rule is a general guideline and not an absolute guarantee. The rule is based on historical data and market performance, which may not necessarily repeat in the future. Individual circumstances, such as investment allocation, retirement duration, and market conditions, can significantly impact the success of the withdrawal strategy.
Additionally, the 4% rule assumes a static withdrawal amount regardless of market conditions. In practice, some retirees may choose to adjust their withdrawal rates based on their portfolio performance or other factors.
Financial advisors often use the 4% rule as a starting point for retirement planning discussions, but they may tailor the approach to individual circumstances and goals. Factors such as risk tolerance, retirement lifestyle, and specific investment strategies should be considered in determining an appropriate withdrawal rate for an individual’s retirement needs.

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