• Vendors

    SIGMA VSS provides one stop for vendors to maintain their information, such as addresses, bank accounts, contracts awarded, and payment information. SIGMA VSS improves online security and protection of personal information.  SIGMA VSS allows companies to have multiple users with different roles to review or update information, respond to business opportunities, see all payments made by the State (by check or direct deposit), and receive electronic communications. Vendors can easily see and maintain their information 24 hours a day, 7 days a week, outside of standard maintenance, in SIGMA VSS through a secure connection. Vendors do not need to be registered to see business and grant opportunities. Vendors must be registered to respond to business or grant opportunities. Companies should ensure that users have been assigned the proper roles to see payment information, or respond to bids and grants.

    Governor Whitmer issued Executive Directive 2019 – 08 calling on the Department of Technology, Management and Budget (DTMB) to encourage expanded business opportunities within low-income communities and underutilized business areas.  To receive this certification as a Geographically-Disadvantaged Business Enterprise, vendors must complete and submit a sworn affidavit.  More information on this program can be found on the DTMB Procurement Executive Directive 2019-08 web page.  The affidavit can be found at the following: Michigan Supplier Community Affidavit.

    VSS Log In


  • Training materials and Q&A material are available on the VSS login webpage.

    These tutorials provide step by step instructions to:

    • Assist existing converted vendors to claim their account
    • Assist new vendors with creating an account

    Assist vendors with responding to solicitation and grant opportunities, a Vendor Support Call Center is available to assist by calling (888) 734-9749 or emailing