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Illinois Registered Agent Services

If you’re starting a business or doing business in the state of Illinois, you’ll need a Registered Agent for receiving legal and other notices. Registered Agents in Illinois must have a physical location within the state where service of process can be received.

With our IL Registered Agent office in Chicago,  you’re guaranteed reliable service from experienced professionals:

C T Corporation System 
208 South LaSalle Street
Suite 814
Chicago, IL  60604
Phone: 312-263-1414

Change your Illinois Registered Agent to CT. Do you currently have a Registered Agent in Illinois, but would like to switch to CT? We make switching your Illinois Registered Agent quick and easy—contact us to make the change.

So don’t stress over missing documents and deadlines. Let CT fulfill your Registered Agent requirements and more in Illinois with the exceptional service and extras you deserve. 


Applications and instructions necessary to meet your licensing requirements.

Starting at $169.00
* Plus State fees

Your LLC or corporation needs a registered agent in its home state and in every state where it is registered to do business,

Starting at $289.00
* Plus State fees

CT can check state records to verify whether the name you want is available for use, before you submit formation paperwork.

Starting at $74.00
* Plus State fees

Reserve your business name so it'll be available when needed.

Starting at $199.00
* Plus State fees


Small business is our business

We support over 300,000 start-ups and small business customers each year.

Your reputation is our top priority

We help keep 1.6 million entities in compliance every year with our monitoring capabilities.

Trusted partner of the NLJ top 250 law firms

Over 70% of the National Law Journal top 250 law firms rely on CT for formation, filing and compliance services.

A Reliable Resource

We host over 100 seminars to keep you informed of the latest state requirements.