Wisconsin Schedule H: Your Codebtors (individuals) is a form used to list individuals who have co-signed or are jointly responsible for a loan or debt to the debtor. It includes information such as the co-signer’s name, address, Social Security Number, and the amount of the loan or debt. There are two types of Wisconsin Schedule H: Your Codebtors (individuals): secured and unsecured. Secured codebtors are those who have collateral (such as a car or house) that can be used to satisfy the debt, while unsecured codebtors have no collateral.