Existing Supplier Maintenance

Domestic Suppliers Only: To improve our business processes and operate more efficiently, we have implemented a web-based self-service system for our suppliers, iSupplyGW.  View the Existing Supplier Training and Navigation. As a registered supplier, you can view and update certain information in your profile information, including:

  • Business classification information describing your company’s type of business, including minority categories
  • NIGP classification information describing the types of goods and services your company offers
  • Banking information for electronic payments
  • Organization contact information, including address

To remain a current business partner with GW, suppliers must now provide business and NIGP classification information. 

Select Login to access the iSupplyGW portal Login, Existing Supplier (Domestic Only)

International Suppliers Only:  International suppliers do not register via our GW portal but instead are required to submit profile updates to the iSupplyGW Team for processing. Please email updates to [email protected].  You will receive an email from the iSupplyGW Team once they have completed the requested update.

We want you to know:

  • New Suppliers with complete and approved registrations are now considered an Existing Supplier and should use Login to make any modifications to their profile.
  • Existing suppliers processing bank updates are required to email voided checks, bank letters, or authorization for direct deposit forms to [email protected] or fax to 571-553-8526. 
  • Completing the registration process does not guarantee your company will receive a request  to bid or a contract from GW, nor does it imply that your company has any type of procurement relationship with GW, either now or in the future.
  • Information provided by your company will be treated in a confidential manner and will be subject to reasonable and prudent safeguards against improper disclosure.
  • Workers Classification Review: Internal review for individual, which can be found under the section "Completing the Necessary Forms" from the GW Tax Department
  • For more information on iSupplyGW, email us at [email protected] or call the iSupplyGW hotline, 571-553-0300.