Photo by: Sarah Gump, DNR, Aspen Camp, Ridgeway, CO

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. 

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ColoradoVSS Support

Due to the COVID-19 pandemic, our team has shifted to working remotely.  Please contact the ColoradoVSS Help Desk:   

ColoradoVSS Provides

System Maintenance Schedule

Please note that ColoradoVSS may not be available on the following weekends due to monthly system maintenance:  

Looking for information on the New VSS Upgrade?

ColoradoVSS Top 6 Registration Tips

To save a version of these tips, check out Registration Tips (PDF).

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Gather Information

After you select Register from the ColoradoVSS website, gather all of the information detailed on the Registration Tips page and have a copy of your W-9 available.

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Tax Identification Number

When entering your Taxpayer Identification Number (TIN) from your W-9 form, leave out the dashes

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Email Verification

Make sure you enter a valid email address in your User Information.

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Commodity Codes

Make sure you enter Commodity Codes in your User Information, as this will ensure that you receive emails about newly published ColoradoVSS Solicitations. 

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Wildcard Search

When searching for Commodity Codes, entering an asterisk (*) before and after each word (or string of words) will yeild more results.

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Business Type

Enter your appropriate Business Types to help the State of Colorado classify your business appropriately.