Once you have received a W-8BEN, you can return the completed form by mail, or by fax to:
U.S. Bank
Tax Reporting Operations
SL-MO-T6CD
PO Box 524
St. Louis, MO 63166-0524
Fax: (314) 418-3530
Your form will be processed by the Tax Reporting Operations teams. If you are due a refund, a credit will be given the account it was accessed on.
To learn more about the W-8BEN, you can visit About Form W-8 BEN, Certificate of Foreign Status of Beneficial Owner for United States Tax Withholding and Reporting (Individuals) | Internal Revenue Service (irs.gov).