Agencies
Services
Additional Helpful Links
Illinois State Agency Sites
- State of Illinois
- State of Illinois Business Portal
- Illinois Comptroller
- Illinois Department of Commerce and Economic Opportunity
- Illinois Department of Employment Security (Unemployment)
- Illinois Department of Financial and Professional Regulation
- Illinois General Assembly
- Illinois Independent Tax Tribunal
- Illinois Lottery
- Illinois State Library
- Illinois State Treasurer's Office (Unclaimed Property)
- Office of the Attorney General (Estate Tax)
- Secretary of State
- Secretary of State (Corporate Forms)
Federal Sites
Other Sites of Interest
- Chicago Department of Revenue
- Cook County Department of Revenue
- Independent Accountants Association of Illinois - illinoisaccountants.com
- Illinois CPA Society
- National Association of Computerized Tax Processors
- Federation of Tax Administrators (Note: This website contains links to other states tax websites.)