This document provides instructions for completing Schedule MI to claim the Wisconsin manufacturing investment credit. It explains that the credit is for businesses certified by the Department of Commerce that had a manufacturer's sales tax credit carryover of more than $25,000 to 2006. The credit equals 1/15 of the carryover amount plus any credit passed through from S corporations. Any unused credit may be carried forward for up to 15 years. The credit amount must be included as income on the taxpayer's Wisconsin tax return.