Calculating sales tax on prices is something you don't have to worry about if you use Excel. You can add a formula to the spreadsheet you use for invoices, bills of sale or quotes, and that's the end ...

I traded the static results of Flash Fill for dynamic formulas that update automatically.

BYROW replaces thousands of table formulas with one spill formula, making spreadsheets leaner and much more robust.

Comments in Excel come in handy for documenting your spreadsheet so you can remember what all the formulas are for or to provide instructions for other spreadsheet users. The How-To Geek points out a ...