Learn how to change the default file format for saves in Word, Excel, and PowerPoint, so that you do not need to change it every time.

Excel and Google Sheets have three functions to calculate the internal rate of return: IRR, XIRR, and MIRR. Learn how these functions can calculate investment returns.

How to calculate return on investment (ROI), the money an investment made relative to its cost, in Microsoft Excel.

If Microsoft Excel opens a Blank screen when you open an existing file, then you can stop Excel from opening a Blank workbook or sheet.