Julia Kagan is a financial/consumer journalist and former senior editor, personal finance, of Investopedia. Thomas J. Brock is a CFA and CPA with more than 20 years of experience in various areas ...

As a small-business owner, you may be thinking about outsourcing work to save time and expand your services. Before taking this step, make sure you ask contractors or companies to fill out a W-9 form.

Forbes contributors publish independent expert analyses and insights. Admitted NY Bar and US Tax Court, covers US international tax law. Using the correct IRS form (W-9 for U.S. persons and W-8BEN for ...