Supplier Processing Payments
Effective March 20, 2008, all original invoice and statements must be send directly to the appropriate billing address specific to the location of the Amgen entity requesting good or services. Vendors should not send invoices to the contact on the invoice or purchase order.

Click here for the list of AP Mailroom addresses for invoice submission.

Invoices must contain the following information to be considered eligible for payment:

  • Valid Amgen PO number
  • Invoice number
  • Invoice date
  • Amgen "requester" name (must match the PO)
  • Payment terms
  • Item/service description (must match the PO)
  • Quantity ordered (must match the PO)
  • Unit of measure (must match the PO)
  • Prices and total cost for each product/service (must match the PO)
  • Applicable taxes (based on Ship To location)
  • Discounts
  • Shipping/handling/freight (must follow Amgen's Inbound Freight Program)
  • Separate labor and materials/parts (must match the PO)
  • Address where product was shipped

Payment Terms

Invoices submitted prior to services being rendered will not be accepted. Amgen will pay suppliers in accordance with pre-agreed terms after receipt of a correct and complete invoice. Invoices submitted that do not contain all of the required information are deemed incomplete and will not be processed. Discount calculation will be based on the date of receipt of a correct and complete invoice.

Changes to Payment Terms

Payment terms may only be modified on individual POs when agreed to in a specific acknowledgement signed by an Amgen Strategic Sourcing & Procurement representative and an authorized representative of the supplier.

Invoice Disputes

If Amgen disputes an amount due, Amgen will notify the supplier in writing of the basis for the dispute. Amgen will only pay the total amount due on a correct and complete invoice. Amgen will not short-pay invoices or pay amended invoices. Please consult your Amgen agreement for any inclusions or exceptions to this policy.