Wisconsin — Wisconsin Allocation and Separate Accounting Data
More about the Wisconsin Form C
We last updated Wisconsin Form C in January 2024 from the Wisconsin Department of Revenue. This form is for income earned in tax year 2023, with tax returns due in April 2024. We will update this page with a new version of the form for 2025 as soon as it is made available by the Wisconsin government.
Other Wisconsin Corporate Income Tax Forms:
In addition to information about Wisconsin's income tax brackets, Tax-Brackets.org provides a total of 89 Wisconsin income tax forms, as well as many federal income tax forms. Here's a list of some of the most commonly used Wisconsin tax forms:
| Form Code | Form Name |
|---|---|
| Form 2 | Wisconsin Fiduciary Income Tax for Estates or Trusts |
| Schedule CC | Request for a Closing Certificate for Fiduciaries |
| Form 4 | Wisconsin Non-Combined Corporation Franchise or Income Tax Return |
| Schedule 5K-1 | Tax-Option (S) Corporation Shareholder's Share of Income, Deductions, Credits, etc. |
| Form 3 | Form 3 Partnership Return |
View all 89 Wisconsin Income Tax Forms
Disclaimer: While we do our best to keep Form C up to date and complete on Tax-Brackets.org, we cannot be held liable for errors or omissions. Is this form missing or out-of-date? Please let us know so we can fix it!
Tax Form Sources:
- Wisconsin Department of Revenue ( http://www.revenue.wi.gov/
) - Department of Revenue Income Tax Forms ( http://www.revenue.wi.gov/html/taxind11.html )