CMS/Vendors

For Federal Taxpayer ID number - W-9 Form, follow this link www.irs.gov/pub/irs-pdf/fw9.pdf.

For existing vendors to check on payment status, follow this link https://www.wh1.ioc.state.il.us/QuickTake/Vend/.

For information on becoming a state certified vendor, follow this link www.sell2.illinois.gov.