time to plan
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Thanks for that explanation - really good to know what question it was answering.My understanding is that the 4% rule is based on a portfolio invested in stocks and bonds.
It was trying to solve for:
- What % of the starting portfolio balance,
- can an investor spend (increasing by inflation),
- for at least 30 years,
- with a very high probability of success (100% I think, or maybe slightly lower),
- from a stock/bond portfolio (I think it was 60/40),
- based on historic US data of returns from stocks and intermediate term bonds,
- given the worst period of returns.
4% was the result.
It doesn't seem to me like a good rule of thumb to apply for deciding what you SHOULD do. I would want to adapt it significantly to manage the very high risk that my retirement would be impacted adversely by spending less than I could, or that alternatively I would retire unnecessarily late due to working longer to achieve a pot that I could draw down to my desired income to meet this 4% rule. Risks have to be balanced.