Invoices & Payment

Invoice via the Ariba Business Network if your purchase order number begins with EP (ex: EP123456):

  • If you have a standard account, you will either click the link for the PO in the original
    email that the PO was sent to you, or you can send yourself another copy of the
    email from within the order in Ariba. To send yourself another copy, click the order in Ariba, then click the 3 dots to the right of the order. Once you click the link in the
    email and sign in, you should see the option to invoice the order on the top of that
    PO. You will not go the Contract PO area to invoice the order. This is why there is no
    number to choose from.
  • If you have an Enterprise account, you can invoice directly within the PO in your
    orders in Ariba.



Ariba Suppliers:

If you wish to receive payment electronically please fill out the “EFT Authorization” via your Ariba Network account by following these steps.

The Account Administrator for your company will need to log in to Ariba.

  • Open the dropdown in the top left corner
  • Choose “Ariba Proposals & Questionnaires”
  • Submit the “EFT Authorization”


New Mexico Non-Taxable Transaction Certificate requests

For NM NTTC requests, complete the NM Non-Taxable Transaction Certificate (NM-NTTC) (pdf), then mail or email it to the following:

Los Alamos National Laboratory

P.O. Box 1663

Accounts Payable, MS P240

Los Alamos, NM 87545




Contacts for Payments and Invoicing

 Lab ContactPhone Number
AP Customer 667-5197
Integrated Contract Orders (ICOs), DOE Miscellaneous Orders (MOs) 667-5197
Special Payments (Non-PO), Non-PO 667-5197