How to use the Illinois Business Entity Search
If you are considering starting a business in Illinois, one of the first steps is ensuring your business name is unique and legally available. An Illinois business entity search is an essential tool to help you confirm that your business name isn’t already registered by another entity. In this guide, we’ll walk you through everything you need to know about performing a business entity search in Illinois, how to navigate the Secretary of State’s website, and why this search is crucial for your business success.
Table of Contents
What Is an Illinois Business Entity Search?

An Illinois business entity search is a process that allows you to search for information about business entities registered with the Illinois Secretary of State. This search helps you confirm whether the name you want to use for your business is already taken or available for registration. It can also provide you with vital details about an existing business, such as its legal status, entity type, registration date, and more.
Key Benefits of an Illinois Business Entity Search:

- Ensure Name Availability: Before you proceed with registering your LLC or corporation, you need to check if the name you’ve chosen is already in use.
- Verify Business Information: This search provides comprehensive details about any existing entity, including its legal status (active, dissolved, or inactive).
- Ensure Compliance: By conducting a business entity search, you reduce the risk of using a name that could lead to legal disputes down the road.
- Simplify the Registration Process: Having your business name confirmed early makes the business registration process faster and smoother.
How to Perform an Illinois Business Entity Search

To perform an Illinois business entity search, follow these simple steps:
- Visit the Illinois Secretary of State Website: Start by visiting the Illinois Secretary of State’s official website. Here, you’ll find the Business Services Division, which hosts the online business entity search tool.
- Navigate to the Business Entity Search Tool: On the Secretary of State’s website, locate the search tool designed specifically for business entities. This will allow you to search for business names, officer information, and more.
- Enter Search Criteria: You’ll be asked to input search terms, such as the business name or the entity number. You can search using either a full name or part of the name.
- Review the Results: Once you input your search criteria, the tool will display a list of businesses that match or closely resemble your query. You can click on any
- name to see detailed information about its registration, status, and officers.
- Check for Active Status: It’s essential to confirm that the business you’re searching for is still active and compliant with Illinois state regulations. If you’re looking to register a new entity, make sure there are no active entities with the same name.
What Information Will You Find in an Illinois Business Entity Search?

An Illinois business entity search provides the following key pieces of information about each business:
- Business Name: The legal name of the entity as registered with the state.
- Entity Type: This could be a corporation, LLC, limited partnership (LP), or another legal structure.
- Status: Whether the business is active, dissolved, or in good standing.
- File Number: A unique identification number assigned to each business by the Secretary of State.
- Incorporation Date: The date the business was formally incorporated or registered.
- Officers and Directors: Information about the business’s officers and directors (if applicable).
- Registered Agent: The individual or entity designated to receive official correspondence for the business.
Why Is an Illinois Business Entity Search Crucial for Your Business?

Performing an Illinois business entity search is not just about checking name availability; it plays a critical role in the broader business formation process:
- Avoiding Legal Issues: Registering a business under a name that is already taken can lead to costly legal battles or forced rebranding.
- Business Planning: If you’re acquiring or merging with another business, an entity search can reveal details about your potential partner’s legal status, financial standing, and more.
- Fulfilling Legal Requirements: Some entities, such as LLCs or corporations, must meet specific legal requirements, including disclosing business names that might be restricted or trademarked.
Additional Tips for Performing an Illinois Business Entity Search

While performing the Illinois business entity search is relatively straightforward, here are a few additional tips to enhance your search experience:
- Check for Similar Names: If your first choice for a business name is unavailable, consider alternatives that are unique but still reflective of your brand.
- Use Partial Name Searches: If you’re unsure of the exact spelling or phrasing of a name, use partial terms in the search. This can help you uncover businesses with similar names that could potentially cause confusion.
- Consider a Trademark Search: In addition to the business entity search, perform a trademark search to ensure the name is not trademarked by another entity. This helps to avoid additional legal obstacles in the future.
- Consult with a Business Attorney: If you encounter any difficulties with your search or need help interpreting the results, it’s a good idea to seek professional advice from a business attorney.
FAQs About Illinois Business Entity Search
Can I Search for a Business by Its Entity Number?
Yes, you can search for a business by its unique entity number. This is a quick and efficient way to find a specific entity without needing the exact business name.
How Do I Know If a Business Name Is Available for Use?
The business entity search will show if the name is already registered. If you don’t find any results that match your desired name, it’s likely available for registration.
Are There Any Fees for Conducting an Illinois Business Entity Search?
No, the business entity search is free of charge on the Illinois Secretary of State’s website.
How Do I Register My Business After the Search?
Once you confirm the availability of your desired business name, you can proceed with the business formation process by registering your entity with the Secretary of State. This can be done online or by submitting the necessary paperwork.
Conclusion
An Illinois business entity search is a vital step in ensuring your business name is available and legally sound. By utilizing the Illinois Secretary of State’s search tool, you can save time, avoid legal pitfalls, and start your business on the right foot. Whether you’re just getting started with your LLC or corporation, or you need to check the status of an existing business, this search provides all the essential information you need.







