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Illinois . Business search

Search Illinois business records like a pro.

Illinois businesses are recorded publicly through Illinois Corporation/LLC Search. This guide explains how to search by name, document number, registered agent, or officer; what each status means; and how to avoid common mistakes.

Search Illinois businesses now →

Four ways to find a Illinois entity

1. By entity name

Drop the LLC/Inc/Corp suffix to widen results.

2. By document number

Unique identifier Illinois Corporation/LLC Search assigns. Best for unambiguous lookup.

3. By registered agent

Useful for due-diligence and identifying related-party structures.

4. By officer or director name

Find every entity where a specific person is listed.

What entity status means in Illinois

StatusWhat it means
Active / Good StandingEntity exists, current on filings.
Active (not in good standing)Entity exists but missed something.
Administratively DissolvedIllinois dissolved for failure to file or pay. Can be reinstated.
Voluntarily DissolvedArticles of Dissolution filed. Cannot be reinstated.
Merged / ConvertedEntity merged into another or converted.

Five common Illinois Corporation/LLC Search search mistakes

  • 1. Including the entity designation.
  • 2. Assuming Active means current on filings.
  • 3. Confusing Administratively Dissolved with Voluntarily Dissolved.
  • 4. Checking only the entity name.
  • 5. Trusting the search for good standing certification.
FAQ

Frequently asked questions

How do I do a Illinois business search?
Use the Illinois Corporation/LLC Search system or run a search through File.Business.
What does Active mean in a Illinois business search?
Active means the entity legally exists. Does NOT mean current on filings.
What does Administratively Dissolved mean?
Illinois dissolved for failure to file or pay. Reinstatement available.
Can I search by registered agent in Illinois?
Yes. Useful for due diligence.
Is the Illinois business search free?
Yes. Illinois Corporation/LLC Search provides free entity searches.
How current is the Illinois business search data?
Illinois Corporation/LLC Search updates within 1 to 3 business days.
Can I get a Certificate of Good Standing through the search?
No. Illinois charges $25. File.Business orders it for you.

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Disclosure. File.Business is a private business filing and compliance service. We are not a government agency and are not affiliated with the Illinois Secretary of State, Department of Business Services or any Secretary of State office. You may file directly with the Illinois Secretary of State, Department of Business Services. Information on this page is for general guidance only and is not legal, tax, or accounting advice. Fees and deadlines verified against the Illinois Secretary of State, Department of Business Services as of June 2026 and may change. For entity-specific guidance, consult a licensed Illinois attorney or CPA.

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File.Business is a private business filing and compliance service. We are not a government agency and are not affiliated with any Secretary of State office. You may file directly with the appropriate state agency. SOC 2 Type II audited. 220,000+ businesses formed since 2017.