As a spreadsheet software program, Microsoft Excel has many useful features for a small business's productivity. Chief among these is the ability to use formulas to make various calculations with the ...

Too many financial decisions are made without factoring in the time value of money. Whether providing financial planning advice related to a client’s retirement, advising a client about a business ...

Discover how to calculate internal rate of return (IRR) to evaluate investment opportunities and understand their potential returns.

Rate of return represents the percentage net gain or loss of an investment's initial cost over a period of time. The rate of return calculates the percentage change from the beginning to the end of a ...

Two years ago, Slate ran a marathon prediction calculator. In the years since, the researchers have updated their work (and the writer became a FiveThirtyEight staff writer). We’ve collaborated with ...