There are a variety of Forms W8 depending on the recipient of the payments. Foreign vendors do not complete the Substitute Form W-9; foreign persons or entities must submit one of five available forms.The revised 2024 form breaks off a new line 3b, adding an additional checkbox for entities that indicate in line 3a (former line 3) that they are a partnership. In this guide, we'll define what tax forms W8 vs. W9, their differences and similarities, and how to fill them out. Most SCU forms here are fillable; please download the form and open it using your preferred PDF viewer to fill out the form electronically. The person named on line 1 of this form is not a U.S. person;. A W9 is an IRS form that independent contractors fill out to give businesses their tax ID number and personal information. Form 1099-C (canceled debt). • Form 1099-A (acquisition or abandonment of secured property).