Professional services businesses
Wisconsin allows professionals, such as accountants, attorneys and physicians, to form a
professional corporation (PC) , which is called a Service Corporation (SC) in Wisconsin.
After forming a corporation, you must undertake certain steps on an ongoing basis to keep your business in compliance. These steps are also important in preserving the limited liability a corporation provides its owners. This guide outlines the ongoing requirements for Wisconsin corporations.
Wisconsin corporations must keep the following items with their corporate records at the principal office:
- Appropriate accounting records
- Minutes of shareholder and director meetings
- Records of actions taken by the shareholders or directors without a meeting and/or by a committee of the board of directors in place of the board of directors on behalf of the corporation
- A list of the shareholders, organized by class/series of shares and including names and addresses, outlining the number and class/series of shares held by each
Corporate taxes and fees
The following are taxation requirements and ongoing fees for Wisconsin corporations:
- Annual report.
Wisconsin requires corporations to file an annual report. The due date is the last day of the calendar quarter in which the anniversary date of the company’s incorporation falls. (For example, if incorporation date were February 3, the annual report would be due March 31.) The filing fee is $40.
For complete details on state taxes for Wisconsin corporations, visit
Business Owner's Toolkit
State of Wisconsin
- Federal tax identification number (EIN).
is required for corporations that will have employees. Additionally, most banks require an EIN in order to open a business bank account.
- State tax identification number.
Wisconsin does not require a state tax identification number.
Business licenses and/or permits are required for most businesses. The BizFilings
Business License Application Package can help you stay on top of these requirements.
S corporation election
Wisconsin recognizes the federal S corporation election and does not require a state-level S corporation election.
Additional Wisconsin information
View the following additional resources BizFilings has for forming and maintaining companies in Wisconsin: