Determining Child Support in Illinois

In Illinois, the amount of child support depends on the non-custodial parent’s net income and the number of children for which he or she is responsible. The chart below represents the minimum of what may be ordered according to the Illinois Statutory Guidelines (750 ILCS 5/505 Sec. 505).

Statutory Guidelines of Child Support

The guidelines in the chart are applied to each case unless the court makes a finding that the amount determined in the guidelines would be inappropriate after considering the best interests of the child. Relevant factors for deviations may include but are not limited to:

1. The financial resources and needs of the child(ren);
2. The financial resources and needs of the custodial parent;
3. Standard of living the child(ren) would have enjoyed had the marriage not been dissolved, the separation not occurred, or if the parties had married;
4. The physical and emotional condition of the child(ren) and their educational needs; and
5. The financial resources and needs of the non-custodial parent.

Net income is the total of all income from all sources, minus the following deductions:

1. Federal income tax;
2. State income tax;
3. Social Security (FICA);
4. Mandatory retirement contributions;
5. Union dues;
6. Dependent and individual health/hospitalization insurance premiums;
7. Prior obligations of support or maintenance actually paid pursuant to a court order or administrative order;
8. Expenses to repay debts that represent reasonable and necessary expenses for the production of income;
9. Medical expenses necessary to preserve life or health; and
10. Reasonable expenses for the benefit of the child and the other parent, exclusive of gifts.

If net income cannot be determined, the court shall order support in an amount considered reasonable in the particular case.