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 25-26, 2020 • February 22-23, 2020
March 21-22, 2020 • April 25-26, 2020
May 23-24, 2020 • June 20-21, 2020
July 25-26, 2020 • August 22-23, 2020
September 19-20, 2020 • October 24-25, 2020
November 21-22, 2020 • December 19-20, 2020