In this example, the goal is to count the number of cells in column D that contain dates that are between two variable dates in G4 and G5. This problem can be solved with the COUNTIFS function or the SUMPRODUCT function, as explained below. For convenience, the worksheet contains two...Read more
The 4% retirement rule suggests you can safely withdraw 4% of your portfolio in year one of retirement, then adjust that amount for inflation each year for 30 years without running out of money. But how does this actually play out year by year? This article builds a complete Excel model to...Read more
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