It is essential that the instructions below be carefully followed in order to ensure proper and timely payment of your invoices. Failure to comply will only result in a delay of payment.
1. Do not accept an order without an official University purchase order number. Orders placed for goods or services to be billed to the University cannot be considered valid until this number has been assigned. Circumventing established purchasing procedures will result in delay of payment.
2. Mail the original invoice to:
Washington University in St. Louis
Accounts Payable
700 Rosedale
Campus Box 1056
St. Louis, MO 63112-1408
or Fax to: 314-935-7070
Original invoices should never be sent to individual departments. Failure to send invoices directly to Accounts Payable will result in delay of payment.
3. The face of each invoice must include the following information:
A. A valid purchase order number
B. The name of the ordering department
C. The appropriate remittance address
4. Each purchase order is to be invoiced separately.
5. As an “Educational, Not for Profit Institution”, Washington University is exempt from Sales Tax, Use Tax and Manufacturer’s Excise Tax. Certification will be furnished upon request.