On September 10, 2018, Accounts Payable issued a memo regarding requirements for all new and updated campus vendors.

In the UNC system, study subjects that receive payments for participation and reimbursement are considered an "Outside Party – Individual" and the following supporting documentation is required in order to issue payment:

• Form W-9 (for U.S. persons) or W-8BEN (for non-resident aliens)
• Foreign Vendor Withholding Assessment with supporting documents (for non-resident aliens only)
• Outside Party-Individual Certification form
• Optional: Banking information (ACH Form) – required only if the study subject prefers direct deposit as opposed to being issued a check. This form is NOT MANDATORY for study subjects.