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Retirement Withdrawals Beyond the 4% Rule: Bryan Foltice on Flexible, Inflation-Adjusted Strategies

In this episode of the Bryan Foltice Behavioral Finance Podcast, we continue to explore why fixed withdrawal rate strategies like the 4% rule can fail over longer 40–50 year retirements, creating a “decumulation paradox” where retirees either run out of money or leave far too much behind.

Today, we discuss proposed alternatives, including Guyton’s Guardrails and a complex optimization approach, and then focus on a simpler two-bucket framework: a “boring” 3% base for necessities plus an “all-out” flexible rule that spends portfolio value above a threshold (often 1.5x the initial amount).

We show how inflation-adjusting the threshold produces zero historical failure rates across 30–50 years with higher average income, and we also review Monte Carlo results showing higher failure probabilities overall but strong relative improvements in income and failure reduction versus the 4% rule.

The full working paper can be downloaded here:

https://papers.ssrn.com/sol3/papers.cfm?abstract_id=7461338

Chapters
00:00 Podcast Welcome
00:26 Fixed Withdrawal Dilemma
01:05 Why Fixed Rates Fail
02:49 Guardrails Too Complex
05:06 Other Alternatives Reviewed
06:43 Two Bucket 3% Base
08:23 All Out Threshold Rule
10:36 When Horizons Get Longer
11:25 Inflation Adjusted Threshold
14:28 Divide Extra By Years
17:58 Monte Carlo Reality Check
21:00 How To Use With Clients
22:25 Wrap Up And Next Steps

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