Chart by author. 1. Calculate percentage changes. Using data in Column C, calculate the daily percentage change in the index. Starting with cell D4, the formula is the current day's closing value ...

Use the 4% rule to calculate how much you need in savings ... you may be able to live comfortably on less than 80%. Let's say you consider yourself the typical retiree. Between you and your ...

Add your annual pre-tax income, monthly contributions, and your estimated monthly budget in retirement to calculate how much ... How long you expect to live, which is also how long you'll need ...