Register as a Vendor
Note: Beginning July 31, 2017, the State of Michigan will begin posting bid opportunities on the new SIGMA VSS system. SIGMA VSS replaces Buy4Michigan and Contract and Payment Express, providing one secure location for vendors to respond to solicitations and track payment information. Visit SIGMA VSS for more information.
Some solicitations will still be posted on Buy4Michigan until October 1, 2017. Vendors should check both sites for bid opportunities until October 1, 2017.