The Illinois Income-Expense affidavit is a legal document used to record the income and expenses of either a party or both parties in a divorce case. This affidavit is used to determine the amount of spousal maintenance or child support that is due. There are two different types of Illinois Income-Expense Affidavits: (1) Short Form Income-Expense Affidavit for Use in Dissolution of Marriage Cases, and (2) Long Form Income-Expense Affidavit for Use in Dissolution of Marriage Cases. The short form affidavit is used for individuals with straightforward income and expenses and requires the party to provide information on their gross income, net income, total expenses, and whether they have verified their income and expenses. The long form affidavit is used for individuals with more complex financial situations and requires them to provide a more detailed breakdown of their income and expenses. Both forms require the party to provide information on their assets, liabilities, and other financial information. The information provided in the affidavit is used to calculate the amount of spousal maintenance or child support owed by the party.