Give Form W8 BEN to the withholding agent or payer if you are a foreign person and you are the beneficial owner of an amount subject to withholding. Form W-9 has space to enter an Exempt payee code (if any) and Exemption from FATCA Reporting Code (if any).Foreign vendors do not complete the Substitute Form W-9; foreign persons or entities must submit one of five available forms. Enter the disregarded entity's name on line 2. W8 forms are for nonUS tax residents to prove their foreign status so they don't need to contribute as much federal income tax to the IRS. Use Form W9 to provide your correct Taxpayer Identification Number (TIN) to the person who is required to file an information return with the IRS. Only USbased companies need to collect Forms W8 or W9. If a company is based outside of the US, there's no need to collect them. Some vendors will fill out a form like one of the Form W-8 or similar forms for foreign persons. U.S. Persons vs Foreign Persons and Use of Form W9.