Wisconsin Business Search
Look up any Wisconsin company in the state's official business search.
Find any Wisconsin LLC or corporation, check whether it is active, and see where to get proof of good standing.
Last updated November 5, 2026
Look up a Wisconsin company
Wisconsin only allows its search on its own site, so this opens in a new tab. It finds the company, not usually its EIN.
What the Wisconsin business search shows
The Wisconsin corporate records search finds a company by entity name or DFI Entity ID. It finds a company by entity name or DFI Entity ID. Use it to confirm a company exists and is active, not to get its federal number.
The Wisconsin entity ID
The Wisconsin Department of Financial Institutions gives every company an entity ID when it is formed. It identifies the company in state records, and it is not the company’s EIN.
Check if a Wisconsin LLC is active
Search the company in the Wisconsin business search and open its record. The status tells you whether the state counts the company as active. Words such as dissolved, revoked, forfeited, inactive or delinquent mean it is not in good standing, usually because an annual filing or fee was missed, and the company may need to be reinstated before it can do business there.
To prove a company is in good standing to a bank, a lender or another state, order a Certificate of Status from the Wisconsin Department of Financial Institutions. Our LLC status check reads the status from public data where a state publishes it.
Good to know in Wisconsin
- Wisconsin forms LLCs at the Department of Financial Institutions rather than a Secretary of State, and the annual report is due by the last day of the calendar quarter that contains the formation anniversary. An LLC organized in February files by March 31 each year; one organized in August files by September 30.
- Wisconsin lets the owner of a single-member LLC that is disregarded for income tax report the LLC's sales on the owner's own sales tax return. The owner may instead apply for a seller's permit in the LLC's name so the LLC gets its own seller's permit number; on that route, each of the owner's disregarded LLCs with taxable sales applies separately.
- Wisconsin's Articles of Organization, Form 502, must give an email address for the registered agent and, when signed in Wisconsin, the name of the individual who drafted the document. The LLC may not name itself as its own registered agent.
Found your Wisconsin company but it has no EIN yet? We prepare and file the application and email you the number.
Start Now →Questions
How do I search for a business in Wisconsin?
Use the Wisconsin corporate records search, which finds a company by entity name or DFI Entity ID. Search by the main words of the name, without LLC or Inc, so small differences do not hide the company.
Does the Wisconsin business search show a company's EIN?
Generally not. The EIN comes from the IRS, and Wisconsin's business records are kept for the state's own purposes. A Form W-9 from the company is the reliable way to get it.
How do I check if a Wisconsin LLC is active?
Search the company by name and open its record. The status shows whether Wisconsin counts it as active. Words like dissolved, revoked, forfeited, inactive or delinquent mean it is not in good standing, often because an annual filing or fee was missed.
How do I get proof that a Wisconsin company is in good standing?
Order a Certificate of Status from the Wisconsin Department of Financial Institutions. Banks, lenders and other states ask for it as proof the company exists and is current.
What is a Wisconsin entity ID?
It is the number the Wisconsin Department of Financial Institutions gives a company when it is formed, and it identifies the company in state records. It is not the company's EIN, which comes from the IRS.
More for Wisconsin companies
- Wisconsin EIN lookup: where a company’s federal number can be found.
- EIN for a Wisconsin business: what Wisconsin asks for after the EIN.
- LLC name check and LLC status check.
- Business search in other states.
Sources
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