A W9 form is a simple document that I fill out when I work as an independent contractor or freelancer. It collects my tax information, like my Social Security number and legal name.

Freelancers and independent contractors have to fill out Form W-9 for their employers and clients. Here’s what to do and how to fill out the form.

If you're a freelancer, consultant, or contractor, or are self-employed in some other capacity, there's a good chance you'll run across the IRS W9 form. It's not as well known as other tax forms ...