• Government and Local Entities

    Welcome to SIGMA, the State of Michigan’s business operations system. If you are a local municipality or authority, school district, community college, or university, you are in the right place.

    SIGMA provides user-friendly experiences for solicitations or SIGMA Vendor Self Service (VSS) when submitting proposals.

    Please review the links below to determine which information is most relevant to you for use with SIGMA.

    Local Entities Tutorials


    To begin posting solicitations, you will need to first register your account information here SIGMA-MiLogin_Button

Government Instructions

Government and Local Entities
Training and Reference Materials

Training and Reference materials are available for SIGMA system.  These materials include:

Reference Guides

SIGMA Local Entities Job Aid

SIGMA Local Entities Reference Manual

Reference Material

Commodity Code List

Please visit the Central Procurement Website to access these training and reference materials at,4602,7-194-26851-306413--,00.html

Customer Support is available by calling 888 734-9749 or emailing

Government and Local Entities Posting Solicitations

Local Entities Posting Solicitations (schools, municipalities, etc.) 

  • Local entities will need to register their account information in SIGMA MiLogin: to post solicitations in SIGMA.
  • For registration assistance and guidance, please contact the Vendor Customer Support Center (VCSC) at or by phone at (888) 734-9749
  • Online training information is available

Check back for additional information and frequent updates.

Local Entities Bidding on State Contracts/Grants
  • Municipalities, schools, universities and other local entities that would like to submit a response to a state business opportunity should follow the vendor directions located here
    • You will choose the catergory of directions based on whether you were previously registered on the Contract & Payment Express (C&PE), Buy4Michigan, or not registered at all