Instructions
Purpose of Form: Use Form W-9 to provide your correct TIN to the requester.
Who Must Provide a TIN: U.S. persons must provide their TIN.
Backup Withholding: Some payees are subject to backup withholding.
Exemptions: Certain entities are exempt from backup withholding/FATCA.
Privacy Act Notice: The IRS uses this information to administer tax laws.
Full instructions: https://www.irs.gov/pub/irs-pdf/iw9.pdf