I dont understand the tax thing, which one do i choose when am from Europe? Form W-8BEN, Certificate of Foreign Status of Beneficial Owner for United States Tax Withholding. Form W-8ECI, Certificate of Foreign Person's Claim for Exemption From Withholding on Income Effectively Connected With the Conduct of a Trade or Business in the United States. Form W-8EXP, Certificate of Foreign Government or Other Foreign Organization for United States Tax Withholding. Form W-8IMY, Certificate of Foreign Intermediary, Foreign Flow-Through Entity, or Certain U.S. Branches for United States Tax Withholding. For a more detailed explanation on which form to use, visit