Microsoft Excel, so I’ve uploaded a spreadsheet that shows the effects of varying returns rates and saving rates in terms of real, accumulated assets after 20, 30, and 40 years to www.efficientfrontier.com/files/savings-path.xls. The name of the game is to accumulate around 12 years of living expenses (cells H12 to H16), which, combined with Social Security, should provide for a reasonable retirement. How did I arrive at 12 years of living expenses? The average person needs to accumulate about twenty-five years of living expenses, and I’m assuming you’ll be getting about half of that from
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