New Vendors

Vendors who are new to Washington University or who have not been paid by WU in the last 18 months, will need to submit a copy of the company’s W-9 Form with the first submission of an invoice.  The company’s legal name, address and Federal Tax ID number are required to establish the company as a vendor in AIS.

Sole Source Justification

The Supplier Selection Justification Form must be completed, signed and forwarded to Purchasing Services when seeking to purchase items or services in excess of $25,000.  The elements to be satisfied are:

  • cost basis (bids or quote on vendor’s letterhead)
  • justification/rationale for the supplier selection

You may scan and attach your completed form and quotes to your Marketplace requisition.

You may use the online form to complete, then save and easily attach to your requisition.

Refer to the Purchasing Department website for additional information on the purchasing process, including a list of preferred vendors and directions for using the online Marketplace resource for ordering supplies.