How do I register a business name?

How to Register a Business Name in Wisconsin

Registering a business name in Wisconsin is a key step when starting a business. This process ensures your business name is legally recognized and protects it from being used by others.

Step 1: Choose Your Business Structure

Before registering your business name, determine your business structure. Common types include sole proprietorship, partnership, LLC, or corporation. The registration process varies depending on the structure.

Step 2: Conduct a Name Availability Search

Check if your desired business name is available by searching the Wisconsin Department of Financial Institutions (DFI) online database. This helps avoid conflicts with existing businesses.

Step 3: Register Your Business Name

• Sole Proprietorship or Partnership: Register a "Doing Business As" (DBA) or trade name with the Wisconsin Department of Revenue (DOR). This is required if you operate under a name other than your personal legal name.
• LLCs and Corporations: Register your business name when you file your Articles of Organization (LLC) or Articles of Incorporation (Corporation) with the Wisconsin DFI. Your business name is officially reserved through this filing.

Step 4: File the Appropriate Forms

Submit the necessary forms either online or by mail:

• For DBAs, file a Trade Name Registration with the Wisconsin Department of Revenue.
• For LLCs and Corporations, file formation documents with the Wisconsin Department of Financial Institutions.

Step 5: Pay the Required Fees

Fees vary by registration type. As of 2026, expect to pay a filing fee for DBAs and formation documents. Check the Wisconsin DFI and DOR websites for current fee schedules.

Additional Operational Considerations

• Business Licenses: After registering your name, verify if your business requires local or state licenses to operate legally.
• Tax Registration: Register for state taxes with the Wisconsin Department of Revenue, especially if you will collect sales tax or have employees.
• Recordkeeping: Maintain copies of your registration documents and renewal notices to ensure compliance and ease of future filings.
• Renewals: Monitor renewal requirements for trade names or business entities to keep your registration active.