The Illinois Child Support Data Sheet is a document used by family law courts to determine the amount of child support payments that must be paid in the state of Illinois. The Data Sheet is used to calculate the amount of support payments based on the combined net income of both parents, the number of children, and other factors such as health insurance and daycare payments. The Data Sheet is an important part of the court’s determination of the amount of child support that must be paid and is a necessary document in all child support court proceedings in the state of Illinois. There are two types of Illinois Child Support Data Sheets: the Standard Data Sheet and the Non-Standard Data Sheet. The Standard Data Sheet is used in cases where the parents have a combined net income of $20,000 or less. This sheet is used to determine the amount of the basic child support obligation. The Non-Standard Data Sheet is used in cases where the parents have a combined net income of more than $20,000. This sheet is used to determine the amount of the basic child support obligation, as well as any additional support payments that may be required.