You Could Spend WAY More Than the 4% Rule Suggests (Says the Man Who Created It) episode artwork

EPISODE · Sep 20, 2025 · 21 MIN

You Could Spend WAY More Than the 4% Rule Suggests (Says the Man Who Created It)

from Ready For Retirement · host James Conole, CFP®

Financial planning’s most famous guideline just got an upgrade. In this exclusive interview, James speaks with Bill Bengen—the MIT-trained engineer turned financial advisor who created the 4% rule—about his updated research and what it means for retirees today.Bengen reveals that diversification alone can raise the safe withdrawal rate to 4.7%, and under certain market conditions, retirees may be able to withdraw 6%, 7%, or even 8% annually. The original 4% rule was never meant to reflect average scenarios. It was built from the worst-case retirement timing in modern history. Even then, a 4% withdrawal strategy lasted 30 years. Bengen’s findings show that across history, the average sustainable withdrawal rate has exceeded 7%, suggesting many retirees could be living more cautiously than necessary.In this conversation, James and Bengen discuss the two factors that matter most when determining safe withdrawals: inflation expectations and stock market valuations at retirement. They also explore why downturns don’t usually require major changes to a plan, but inflation threats demand immediate attention.Rather than focusing on a single “magic number,” Bengen emphasizes a process-oriented approach—one that starts with your circumstances and considers the economic environment before setting a withdrawal strategy.- Advisory services are offered through Root Financial Partners, LLC, an SEC-registered investment adviser. This content is intended for informational and educational purposes only and should not be considered personalized investment, tax, or legal advice. Viewing this content does not create an advisory relationship. We do not provide tax preparation or legal services. Always consult an investment, tax or legal professional regarding your specific situation.The strategies, case studies, and examples discussed may not be suitable for everyone. They are hypothetical and for illustrative and educational purposes only. They do not reflect actual client results and are not guarantees of future performance. All investments involve risk, including the potential loss of principal.Comments reflect the views of individual users and do not necessarily represent the views of Root Financial. They are not verified, may not be accurate, and should not be considered testimonials or endorsementsParticipation in the Retirement Planning Academy or Early Retirement Academy does not create an advisory relationship with Root Financial. These programs are educational in nature and are not a substitute for personalized financial advice. Advisory services are offered only under a written agreement with Root Financial.Create Your Custom Strategy ⬇️Get Started Here.Join the new Root Collective HERE!

Financial planning’s most famous guideline just got an upgrade. In this exclusive interview, James speaks with Bill Bengen—the MIT-trained engineer turned financial advisor who created the 4% rule—about his updated research and what it means for retirees today. Bengen reveals that diversification alone can raise the safe withdrawal rate to 4.7%, and under certain market conditions, retirees may be able to withdraw 6%, 7%, or even 8% annually. The original 4% rule was never meant to reflect av...

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You Could Spend WAY More Than the 4% Rule Suggests (Says the Man Who Created It)

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This episode is 21 minutes long.

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This episode was published on September 20, 2025.

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Financial planning’s most famous guideline just got an upgrade. In this exclusive interview, James speaks with Bill Bengen—the MIT-trained engineer turned financial advisor who created the 4% rule—about his updated research and what it means for...

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