The Wisconsin Annual Account Worksheet is a document used by businesses in the state of Wisconsin to calculate their annual reportable income. It is a comprehensive summary of a taxpayer's income and deductions, and it is used to help the taxpayer understand their tax liability before filing a final return. There are three different types of Wisconsin Annual Account Worksheets: the Business Income Worksheet, the Nonresident Worksheet, and the S-Corporation Worksheet. The Business Income Worksheet is used to calculate income from business activities and to calculate deductions for business expenses. The Nonresident Worksheet is used to calculate the prorated income of individuals who are not residents of Wisconsin. The S-Corporation Worksheet is used to calculate the income and deductions of an S-Corporation.