All vendors submitting bids and offers on Illinois public contracts must: 1. Be a legal entity authorized to transact business or conduct affairs in Illinois.This page provides quick links to vendor-oriented Disclosure Form resources available at the Program website. This article provides stepbystep instructions on how to complete the Vendor Information Form using Adobe Sign. Vendor shall include these Standard Illinois Certifications in any subcontract used in the performance of the contract. Click the New Vendor Registration button below; it will take you to the registration page in the iSupplier Portal where you can complete the process.
