Payment and Invoicing

Payment and Invoicing

Payment should be in accordance with your Northrop Grumman purchase order invoicing instructions. When applicable, the Northrop Grumman billing address will display in the header of the purchase order/change order

If you have any questions please contact your Northrop Grumman buyer or representative. 

Accounts Payable

For Aerospace Systems, Corporate & Enterprise Services, Mission Systems, Technology Services:
Northrop Grumman Systems Corporation
Enterprise Transaction Services
8710 Freeport Parkway, Suite 200
Irving TX 75063-2577
Attn:A/P Department - Mail Stop K06421
For Innovation Systems/Heritage Orbital ATK
  • E-Mail invoices electronically (Preferred):
  • Alternate Mailing address:
Alliant Techsystems Operations LLC
Financial Shared Services
5995 Opus Parkway
Minnetonka, MN 55343

Evaluated Receipts Settlement (ERS)

Supplier Invoice Instructions

Direct Pay Permits