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The week's question
In March 2025, in the thread "Re: OT, out", Umm asked the members: "Do you think it is because America is made up of magical soil that makes businesses based in America magically profitable?" This week it is put to everyone again. The button below opens the small thread re-asking it - read what others have said so far, then give your own answer as an ordinary reply.
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Personal Finance / Retirement Investing
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Author: AdrianC ⎊✹  😊 😞
Number: of 1355 
Subject: Total Portfolio Allocation and Withdrawal
Date: 01/29/25 9:29 AM
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No. of Recommendations: 5
An interesting method for estimating retirement spending:

Total Portfolio Allocation and Withdrawal (TPAW) is a financial planning tool that implements the lifecycle model of investing and spending from economics.

Long thread on Bogleheads:
https://www.bogleheads.org/forum/viewtopic.php?t=3...

The author just appeared on the Rational Reminder podcast. Thread here:
community.rationalreminder.ca - Episode ben mathew the lifecycle model vs safe withdrawal rates swr discussion thread

There's a spreadsheet and an online planner:
https://tpawplanner.com/

The method uses expected returns and expected longevity in calculating a variable withdrawal rate. It's a good deal more sophisticated than a simple SWR (like the 4% 'rule'). With so many unknowns it may not be an improvement.

The default expected returns in the planner are based on current valuations (CAPE for stocks and TIPS yields for bonds).

Suspect some folks will not like that - likely will give lower than 4% withdrawal rate for long retirements. I haven't thrown our numbers into it yet.
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This community has written 1,284 posts about Retirement Investing. The article-length ones it recommended most:
The Case for Long-Term Buy and Hold Investing · 49 recs · 2025
Transferring assets to the next generation · 20 recs · 2025
Retirement Year 8 · 17 recs · 2025
(nearly) year one of retirement has been good · 11 recs · 2026
Buying Treasuries Via Vanguard · 10 recs · 2023
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