How do I register a business name?

How to Register a Business Name in Illinois

Registering your business name in Illinois is a key step to legally operate and protect your brand identity. Follow these practical steps to complete the registration process efficiently.

Step 1: Choose Your Business Name

Ensure your desired business name is unique and complies with Illinois naming rules. The name should not be misleading or too similar to existing registered names.

Step 2: Check Name Availability

• Use the Illinois Secretary of State's online database to verify name availability.
• Reserve the name if needed, especially if you are not ready to register immediately.

Step 3: Register Your Business Name

The registration process depends on your business structure:

• Sole Proprietorship or Partnership: File a Assumed Name Certificate (also known as a "Doing Business As" or DBA) with the county clerk where your business is located.
• Corporations, LLCs, and Limited Partnerships: Register your business name through the Illinois Secretary of State by filing the appropriate formation documents.

Step 4: Complete Necessary Filings

• For DBAs, submit the Assumed Name Certificate form to your county clerk’s office along with the required fee.
• For corporations and LLCs, file Articles of Incorporation or Organization with the Illinois Secretary of State online or by mail.

Additional Operational Considerations

• Licensing: After name registration, verify if your business requires local or state licenses.
• Tax Registration: Register with the Illinois Department of Revenue for state tax accounts.
• Recordkeeping: Maintain copies of all registration documents for compliance and bookkeeping.
• Renewals: Some registrations, like DBAs, may require periodic renewal; check local county requirements.

As of 2026, always confirm the latest filing fees and forms on the official Illinois Secretary of State and county clerk websites to ensure compliance and smooth processing.