The use of the W-9 form, is determined by the IRS to be a
"Request for Taxpayer Identification Number and Certification" basically but gets more complex as variations reveal themself.
It is always a good idea to read the form in its entirety before you sign it and if you are the person requesting the information then you too should read the instructions 4 sheet as a precaution to disaster.
It's right on this site, to view and to print.
It is the 4 page Request for Taxpayer Identification Number and Certification.
It is 4 pages is available to view and to print.
It is the Instructions for the
Requester of Form W-9.
It's available to view and to print.
Request for a student’s or borrower’s Taxpayer
Identification Number and Certification. 2 Pages.
The Spanish version of the W-9 Form is available and ready to print.
Solicitud y Certificación del Número
de Identificación del Contribuyente.
(In Spanish) is ready to view and to print. 4 Pages.
Instrucciones para el Solicitante del Formulario W-9(SP).
This is for foreigners to use. As they would not use the W9.
These are the Instructions for Form W8