Existing Supplier Maintenance
Changes Effective March 3, 2025
Domestic Suppliers Only:
All existing suppliers will need to accept an invitation to register through PaymentWorks in order to update payment information, tax information, addresses or contact information.
To improve our business processes and operate more efficiently, we have implemented PaymentWorks, a web-based self-service system for our suppliers. As a registered supplier, you can view invoices and payments as well as 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.
If you do not currently have access to PaymentWorks, please email [email protected] for an invitation.
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 send updates to iSupply's email. 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 PaymentWorks to make any modifications to their profile.
- 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. This is completed by the department.
- For more information on iSupplyGW, email us or call the iSupplyGW hotline, 571-553-0300.