Is Illinois a state that combines income of new spouse for child support?

Answer 1

No. Child support is paid by non custodial parent, not step parent. Income of a New Spouse: Contrary to common belief, Illinois law permits judges to consider the income of a second spouse when establishing or modifying child support awards. The door swings both ways, too. A custodial parent who remarries a well-to-do spouse may suffer a reduction in child support to be paid by the non-custodial parent.19 Likewise, a non-custodial parent who remarries a spouse of substantial means may be required by the court to pay a higher child support than if the marriage had not taken place. http://www.illinoisdivorce.com/family_law_articles/etsblishing_child_support.php