Downloadable W9 Tax Form – W-9–Request to Taxpayer Identity Number and Certificate–is a common IRS form. When you work for a client, or if your business is independent, they may ask that you fill out and return a W-9 to make sure they are able to prepare the 1099-NEC form accurately and then report the payments you receive at the close of the year. Downloadable W9 Tax Form where can i download a w-9 form