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by ZephyrBlu 1639 days ago
I'm confused by your question. If you take 4% of the principal and the market does not return at least 4%, your principle has shrunk. This does not account for inflation either.

The Trinity study that the 4% rule comes from is based on having some assets left after 30 years, not the original principle being intact.

Trinity study: https://en.wikipedia.org/wiki/Trinity_study