W-9 Form 2021 Ny – Form W-9–Request for Taxpayer Identification Number and Certification–is a commonly used IRS form. When you function for a client, or in case your company is independent, they may ask that you fill out and return a W-9 to ensure they are able to prepare the 1099-NEC form accurately and after that report the payments you obtain at the close of the year. W-9 Form 2021 Ny