I'm a Vendor; What do I enter for my Tax ID? Liquid Support November 12, 2021 23:52 Updated Enter your US Tax ID if you are a US citizen, resident, or other entity with a US Tax ID. Your SSN, EIN, or ITIN is used for your W9. This information is encrypted and kept secure. If you are not located in the United States, the Tax ID step will be optional. Do NOT enter your Client's EIN or Tax ID. Related articles How do I accept a Work Order that my Client has sent to me? How can I bulk create or bulk upload my hours into Liquid? Why is Liquid asking me for the country of my Vendor business? How do I sign up for Liquid as a Vendor / Contractor / Freelancer? What does Liquid use my social security number for?