## Documentation Index

Access the complete documentation index at:
https://www.zoho.com/us/books/kb/llms.txt

Use this file to discover all available documentation pages before proceeding.

# Form W-9

*   [What is Form W-9?](/ca/books/kb/form-w9/what-is-form-w9.html)
*   [When is Form W-9 used?](/ca/books/kb/form-w9/when-is-form-w9-used.html)
*   [Who needs a Form W-9?](/ca/books/kb/form-w9/who-needs-a-form-w9.html)