How do I check if a business name is available?

How to Check if a Business Name is Available in Wisconsin

Before registering your business in Wisconsin, it is essential to verify that your desired business name is available. This step helps ensure your name is unique and complies with state naming rules.

Steps to Check Business Name Availability

• Search the Wisconsin Department of Financial Institutions (DFI) Database: Use the DFI's online Corporation/LLC Name Search tool to check if your business name is already in use by a corporation, LLC, or limited partnership.
• Check Trade Name Registrations: For sole proprietorships or partnerships, search the DFI’s Trade Name Search to confirm your name is not registered as a trade name by another business.
• Consider Trademark Searches: Although not required, checking the U.S. Patent and Trademark Office (USPTO) database can help avoid conflicts with federally registered trademarks.

Operational Tips

• Follow Wisconsin Naming Rules: Ensure your business name includes required identifiers (e.g., "LLC" for limited liability companies) and avoids restricted words.
• Reserve Your Business Name: If your name is available but you are not ready to register your business, you can file a name reservation with the Wisconsin DFI to hold the name for up to 120 days.
• Recordkeeping: Keep records of your name search and reservation confirmations as part of your business formation documentation.
• Plan for Registration: Once your name is confirmed available, proceed with business registration, which may include obtaining necessary licenses and permits based on your industry.

As of 2026, always verify information on official Wisconsin state websites to ensure compliance with current requirements.