Colorado Vendor Self Service (ColoradoVSS) is the vendor-facing component of the CORE system. Most State Agencies and many Institutions of Higher Education are posting solicitations for goods and services as well as construction notices in ColoradoVSS.
Vendors can register for free and update account information.
Vendors do not need to be registered in VSS to view and respond to solicitations.
NIGP commodity codes are used to identify products or services offered by vendors.
Email notifications (for new solicitations) are sent based on commodity codes selected.
In order to ensure the integrity of our vendor records, we verify information through the Internal Revenue Service (IRS).
For a complete listing of where solicitations are being posted, please visit the State Purchasing Office website.
System Maintenance Schedule
Please note that ColoradoVSS may not be available on the following weekends due to monthly system maintenance:
January 23-24, 2022 -- February 19-20, 2022
March 19-20, 2022 -- April 23-24, 2022
May 21-22, 2022 -- June 25-26, 2022
July - None -- August 20-21, 2022
September 24-25, 2022 -- October - None
November 19-20, 2022 -- December 24-25, 2022