Illinois Business Entity & Corporation Search

Illinois-State-ShapeLooking for information on how to conduct business entity search in Illinois? Well, you’ve come to the right place.

Department of Business Services, a subdivision of Illinois Secretary of State maintains the database of all the registered businesses in the state.

Basic information about businesses can be accessed for on the Secretary of State website.

Registration information of Limited liability companies, Limited liability partnerships, and corporations are available with the department. However, it does not maintain information on sole proprietorships.

Department of Business Services maintains registration information of LLCs, LLPs and corporations.

Business entity search can help you,

  • to check the availability of a business name
  • to find information about any business such as address, owner(s) name etc
  • to file relevant business documents

Illinois Secretary of State Business Entity Search

In this section, we will be discussing step by step instructions on how to search for a business in Illinois.

Step 1: Open Illinois Department of Business Services page – Link (opens in new tab).

Step 2: Select whether you are looking to search for an LLC or Corporation or both. If you are unsure simply select ‘Corporate and LLC‘ option.

Step 3: Click on ‘Continue‘ button.

Illinois Business Entity Search

Step 4: On the next page, you can choose from any of the following search options:

  • Name – Business names starting with the entered search term will only be shown.
  • Key Word – Business names containing the entered word will be shown.
  • Partial Word – Shows business name containing the partial word anywhere in the name.

For example: Let’s try searching for a business – ‘Happy Go Lucky LLP‘. The search combination can be:

  • Name – ‘Happy’
  • Keyword – ‘Go’
  • Partial Word – ‘Luck’

Step 5: Enter the name of the business in the text box.

Step 6: Click on the ‘Continue‘ button.

Step 7: On the next page, you can view the result. Following information about each entry is shown:

  • Entity Type
  • File Number
  • Corporation/LLC Name

Based on the available information, select the business you are looking for.

In case you are not able to find out the business, try searching again with a more specific query.

Step 8: On the next page, you will be able to view complete details about the business.

File NumberUnique 8 digit Business Identifier
Entity NameBusiness Entity Name
StatusCurrent Status of the Business
Entity TypeBusiness Entity Type – LLC/Corporation/Partnership etc.
Type of CorpType of Corporation – Domestic/Foreign
Incorporation Date (Domestic)Date of Incorporation
StateState of business formation
Duration DateBusiness Expiry Date
Annual Report Filing DateDate of filing of Annual Report
Agent DetailsRegistered Agent name and contact details
Officer(s) Name & AddressName and contact details of officers/directors

Business owners/agents can purchase a certificate of good standing by paying a fee of $45 plus 2.5% payment processing charges.

Additionally, business owner(s) can file the following documents:

  • File Annual Report
  • Adopting Assumed Name
  • Articles of Amendment Effecting a Name Change
  • Change of Registered Agent and/or Registered Office Address

IL Secretary of State Contact Information
Address213 State Capitol
Springfield, IL 62756
Phone NumberToll Free: 1800-252-8980
Outside Illinois: 217-785-3000
Office Hours8:00 AM – 5:00 PM Monday – Friday (except for Official State Holidays)

Links & References

  1. https://en.wikipedia.org/wiki/Illinois_Secretary_of_State
  2. https://www.cyberdriveillinois.com/

Last Updated on: 28/03/2019

  • Matt says:

    Do you suggest using my personal name for the name of the LLC?

    • Meredith Karter says:

      Hey Matt,

      It totally depends on what sort of business you run and what is your end plan. If you are looking to be the face of your business then yes you can go ahead. But one thing to note here is, if your name is too common then it might pose difficulty for your business to be discovered online.

      I hope it helps.

      – Meredith

    • Meredith Karter says:

      Depends. If you are the face of the business than yes you may go for it. But if your clients prefer hiring a firm rather a personal name LLC, or you are building a business which you would eventually, in such cases go for a brandable business name.

      I hope that was helpful.


  • Charles John says:

    I have a query regarding how the uniqueness of the name is determined.

    Let’s say am looking to register a LLC
    “PQR Contractor LLC”
    and there is already a corporation registered with the name
    “PQR Contractor Inc.”

    So can I register the name in such case?

    • Meredith Karter says:

      First, you need to check if there is any trademark registered for PQR Contractor. Use this link: http://www.ilsos.gov/trademarksearch/

      If there is no trademark registered, you may go ahead. But that being said, I would suggest you come up with an alternate name. During branding and advertising your business, users may mistake your business with the other.

      I hope that was helpful.


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