Retired Money

By Jonathan Chevreau on October 23, 2025
Estimated reading time: 7 minutes

By Jonathan Chevreau on October 23, 2025
Estimated reading time: 7 minutes

A trio of new books from notable (and notorious) authors offer fresh insights on retirement investing.

Because I get a lot of free review copies of financial books, it’s rare that I actually order one from Amazon, let alone three. But I did just that recently when I was curious about three influential authors who released new financial books within weeks of each other.

The first can be regarded by retirees and those on the cusp of retirement as a must read: William Bengen’s A Richer Retirement, the long-awaited update of his classic book on the much-cited 4% Rule: Conserving Client Portfolios During Retirement. First published in 2006, that book was really aimed at financial advisors but became popular with the general investing public after it got extensive press exposure over the years.

The 4% Rule—which is actually closer to a 4.7% Rule depending how you interpret it—refers to the “safe” percentage of a portfolio that retirees can withdraw each year without running out of money in 30 years, net of inflation. Bengen’s term for this is “SAFEMAX.”

The new book is supposedly aimed at average investors. Still, I found it pretty technical, filled chock-a-block with charts and tables that are probably more accessible to the original audience of financial professionals. Counting some useful appendices, the book is just under 250 pages.

After wading through all Bengen’s tweaks meant to minimize the impact of inflation, bear markets, and unexpected longevity, I was left with the impression the original 4% Rule remains a pretty good initial guestimate for what retirees can safely withdraw in any given year.

Sure, 3.5% or 3% may be technically “safer,” especially if you expect to live a very long life or want to leave an estate for your heirs. I’ve even seen arguments that a 2% retirement rule may be appropriate for extremely risk-averse retirees.

On........

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