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You can search for business entities registered and operating in the state of Illinois by using the official business search tool. It is the Illinois Corporation & LLC Search Tool. Read how to access the free tool below.

Illinois business search

You can change a registered agent by informing the Secretary of State online via a 'Statement of Change of Registered Agent and/or Registered Office'. Learn how to do this step by step.

Change Illinois registered agent

LLCs in Illinois offer entrepreneurs a flexible business structure that allows the formation of various types of businesses.

Illinois LLC

To add a spouse or business partner to your Illinois LLC, you'll need to update the Illinois Secretary of State. Learn more about adding a member to your LLC in Illinois.

Illinois LLC add member

LLCs formed in Illinois need to file this report with the Illinois Secretary of State each and every year. i.e., annually. Read about how to file this report.

Illinois LLC Annual Report

To change the address of an Illinois LLC, you will need to file the Articles of Amendment with the Secretary of State and file separately with the IRS. 

Change Illinois LLC address

You can change the name of an Illinois LLC by filing the articles of amendment with the secretary of state. Read the step-by-step instructions below:


Change Illinois LLC name

If you want to remove a member from an Illinois LLC, refer to your operating agreement for details. After that, you can update the state of Illinois.