iSupplier Register & Log-in

Prospective Supplier Registration

The steps below outline the process for starting a new registration for a bidder (supplier). Review the information required and the overview of the NIGP codes.

  • iSupplier requires the use of the latest version of Chrome, Fire Fox, or Edge. 
  • Read our Online Guide (PDF). Then, register the required information (next section).
  • Upon approval (a few minutes), the main contact will receive an email with a User Name (email address) and temporary password with a link to login. ***Note: The URL in the temporary password email is routing to the wrong page. Use the link below:
  •  Log in to your Supplier profile and assign permanent password for your company profile.***
  • If your organization has multiple users who should have online access, a Main Contact should add the contacts in the Contact Directory upon login. The contact request will be approved and a user name and password will be sent to each contact to gain access.

Information Required to Register

A company profile requires the following:

  • Company Name (DBA): Legal name on W-9 tax form
  • Taxpayer Identification: The system allows one registration per federal tax id (9-digit).
  • Main Contact: Name, Email, and Phone Number
  • Address: Request for Quote (RFQ) address.
  • Contacts: Main POC for the company may add multiple contacts for online user access if needed.
  • Business Classification: Only if applicable.
  • Products and Services: Minimum of at least one selection is required.

Note: Loudoun County utilizes the National Institute of Governmental Purchasing (NIGP) Commodity/Services Codes. We use the 5-digit hierarchy (3-digit class and 2-digit commodity). Additional information can be found below.

Overview of NIGP Codes

Classes 005-898 list products and 900-998 list services. An additional search engine has been provided to help you identify commodities not easily found in iSupplier.

Registered Suppliers Access

You may access the system 24/7 except when it is down for routine maintenance on Fridays from 6:00 p.m. to 9:00 p.m.