Request for Taxpayer Identification Number and Certification form (W-9)
The official Department of the Treasury Internal Revenue Service form is four (4) pages long, including form instructions.
Only a complete first page need to be turned in.
A link to the official form on the IRS website is at the bottom of this page.
You should read and understand this form and its documented instructions fully before you complete and sign it.
Everything that is hightlighted in the image below is required for the completed form to be valid.
The box "Requester's name and address (optional)" must always contain a valid contact phone number. And if the form is for a sports official, the name of the sport should also be in this box.