Celebrating 20 Years of the 4% Rule
In was 20 years ago today…
The October 1994 issue of the Journal of Financial Planning contained William Bengen’s article, “Determining Withdrawal Rates Using Historical Data.” This article has had a truly profound effect on retirement income planning. In fact, one might argue that the article gave birth to retirement income planning. With this article, it becomes clear that post-retirement and pre-retirement investing are different beasts, as sequence of returns risk plays a bigger role when distributions are taken from the portfolio. In celebration of this 20-year anniversary, the Journal of Financial Planning currently has Bengen’s original article on its main webpage. As well, Jonathan Guyton has written a wonderful cover story about Bengen’s work, placing it in the historical context of where financial planning was in the 1990s, and how much things have changed in the past 20 years.
That history lesson is especially valuable for me. In the article you will see excerpts from a short interview I had with the journal. One of the questions which was cut was: where was I 20 years ago? Well, I was just getting underway with my senior year of high school. It would still be a long time before I heard about the article.
It’s also worth noting that precisely 10 years ago in October 2004, Jonathan Guyton’s first groundbreaking article on decision rules to guide retirement spending in response to portfolio performance was published.
In recognition of this anniversary, last week I spoke with financial planner Joshua Sheets on his Radical Personal Finance podcast about the history of the 4% rule. You can hear the podcast here.
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