Doing Business In the State of Illinois

Here you will find information that can help whether you are starting a new business, running a business, or changing an existing business.

• Illinois Small Business Assistance
  
  
• Registering Your Business in Illinois
  You must register with the Illinois Department of Revenue if you conduct business in Illinois, or with Illinois customers. Click here to learn how.
  
  
• Sell 2 Illinois
  The State of Illinois buys everything from food to rock salt to office furniture to consulting services and needs virtually everything consumers and businesses need.
  
  
• State of Illinois Business Enterprise Program
  "Everything You Always Wanted To Know About Becoming a Certified Vendor And Doing Business With the State of Illinois, As a Minority, Female, or Disabled Business Owner."
  
  
• State of Illinois Business Portal
  The Illinois Business Portal can help you get the answers you need. at any stage in your business life cycle.
  
  
• Verify Business Registration
  Date of inquiry: 9/7/2007 Click here to learn whether a business is registered with the Illinois Department of Revenue.
  
  

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