• 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

    Please Note:

    • New requests for access take 3-5 business days to process.
    • State of Michigan IT Access Control policies require any account that is inactive for more than 90 days to be locked. Please contact the SIGMA Helpdesk for assistance in unlocking your account. Assistance may be obtained by calling 517-284-0580 or by email at

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 (517) 284-0580 or emailing

Government and Local Entities Posting Solicitations

System Availability

  • The system is available from 8 a.m. - 6 p.m. Monday through Saturday. The system closes nightly for batch processing at 6 p.m.

  • Bids are synced to the public VSS website every 2 hours during the work day starting at 8 a.m.

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

  • Local entities will need to register their account information in SIGMA MiLogin: to post solicitations in SIGMA.
  • New requests take 3-5 business days to process
  • State of Michigan IT Access Control policies require any account that is inactive for more than 90 days to be locked
  • For registration assistance and guidance, please contact the Vendor Customer Support Center (VCSC) at or by phone at (517) 284-0580
  • 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