How long is a W-9 good for?

A W-9 is good until the information on the form is incorrect. There is no expiration date on a W-9 form, which means it's valid as long as it's correct. This means that while companies don't necessarily have to get updated W-9 forms every year, it's often a good practice to do so.

Independent contractors and companies change addresses, names, and other important information regularly, so it's a good idea to ask for new W-9 forms annually.