W-9 Form For 2021 – The IRS forms W-9, Request for Taxpayer Identification Number (and Certification) are all commonly used. If you have your own company or function as an independent contractor, a client may request that you fill out and send a W-9 so they can accurately prepare your 1099-NEC form and report the payments they make to you at the finish of the year. W-9 Form For 2021 w 9 form for 2021