Most supplier relationships are established within the departments on the four CU campuses. To be an established supplier, you must be invited by a CU department.

CU Supplier Portal

The CU Supplier Portal is available through the University's eProcurement system, CU Marketplace. As an external supplier, register in the CU Supplier Portal to do the following:

• Register online to become a supplier with CU (this is done by invite only). 
• Manage supplier information, such as addresses, contacts, and diversity classification
• View and respond to University solicitations on CU's BidNet Website [2].
• Submit invoices and view invoice status online (this access replaces the need to submit to apinvoice@cu.edu [3] or to contact the University for invoice status information). Available Mid-2025

Individual Payees

If a department wishes to issue you an Honorarium [4], you will receive an invitation to register as an Individual supplier in the CU Marketplace. Individual suppliers are a condensed registration that is not required to provide as much information as a Company or an Independent Contractor that receives a Purchase Order. Follow the registration steps noted here (Individual Registration Knowledge Article) and in the video below:

Companies/Organizations and Independent Contractors

If your company/organization is working with a CU department, or you are working under a Scope of Work [5], you will need to complete a Company/Independent Contractor registration. This registration collects more information, such as what types of goods/services you will be providing the University, Small Business designations, and more.  Follow the registration steps noted here (Company/Independent Contractor Knowledge Article) and in the video below:

Documents Necessary for Supplier Registration

United States Individuals and Organizations

Please note that individuals doing business as an Individual/Sole Proprietor or Single-Member LLC are required to do business under their Social Security Number and will register using their legal name 

W-9 [6] (US entity)

Non-US Individuals and Organizations

For additional guidance on international tax, contact the International Tax team [7]

W-8BEN [8] (Foreign Individual)

W-8BEN-E [9](Foreign Entity)

Small and Diverse Business Certifications

Certifications [10] (Information from the Office of Economic Development and International Trade)

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