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 ...

If you want to get paid, you may need to submit a W9 form. Photo: David Goehring, Flickr If you're a freelancer, consultant, or contractor, or are self-employed in some other capacity, there's a good ...