Who is required to file a Wisconsin corporation franchise or income tax return?
Every corporation organized under the laws of Wisconsin or licensed to do business in Wisconsin (except certain organizations exempt under sec. 71.26(1), Wis. Stats.) is required to file a Wisconsin corporate franchise or income tax return, regardless of whether or not business was transacted. Unlicensed corporations are also required to file returns for each year they do business or have certain business activities in Wisconsin.