Related Websites


For your convenience, this page will link you to a variety of external websites that will assist you in doing the following:

  • Verify a Corporation/LLC's Certificate of Good Standing with the State of Illinois
  • Perform Federal Employment Identification Number (FEIN) inquiries
  • Obtain surety bond information for contract insurance
  • Obtain information on doing business in the State of Illinois
  • Access various governmental procurement organizations
  • Browse federal, state, and local government websites

Illinois Certificate of Good Standing Corp/LLC Search

Illinois Tax Registration Inquiry (FEIN Verification)

Surety Information Office (SIO)

Financial Management Services Surety Bond Listing

Doing Business With The State of Illinois

Application to Transact Business in the State of Illinois

National Institute of Government Purchasing (NIGP)

Illinois Association of Public Procurement Officials, Inc. (IAPPO) Local NIGP Chapter

Federal Government Portal for Businesses and Nonprofits

State of Illinois Business Portal

Vendor Guide to doing Business With Cook County

For the Metropolitan Water Reclamation District Act, click here

For the Metropolitan Water Reclamation District Purchasing Act, click here