Ever looked at your paycheck and wondered why your take-home pay seems off? It might have something to do with your W-4 form.

Julia Kagan is a financial/consumer journalist and former senior editor, personal finance, of Investopedia. Form W-9 is an IRS form used to give your taxpayer information to someone who must report ...

Foreign individuals use IRS Form W-8BEN to certify their non-U.S. status and claim benefits such as reduced withholding rates that may be available because of an income tax treaty. The form helps ...