New Research

My research into optimizing retirement investment income is ongoing.

My research into optimizing retirement investment income is ongoing. I’ve been at it for thirty years, and my list of new topics for study seems to grow longer, not shorter.

In this section, I’ll report the results of my latest research. Some of it may expand on topics covered in my book (“A Richer Retirement”). Other reports may break new ground. There doesn’t seem to be an end to all the fun!

I’ll also discuss new results from other researchers. There is no shortage of bright, inquisitive people in the field of retirement income research. I’ve learned much from them, and I believe you will, too.

Please check back here periodically for new entries.

Thanks,

Bill Bengen

research

New Research

Research Report #4: Revisiting the Fixed Percentage (FP) Withdrawal Scheme” 12/1/2025

Research Report #1: Increasing Recommended Fixed Asset Allocation to 65% (9/18/2025)

Research Report #2: Trouble with the Curve” 10/7/2025

Research Report #3: SAFEMAX for higher Shiller CAPE values in high-inflation regime 10/19/2025