Illinois Divorce Lawyer Blog
Questions for Michael Roe about Illinois Child Support? Here’s a quick summary of the application of overnight calculations that affect actual child support.
Recent changes to Illinois divorce law have reshaped how courts handle child support calculations when parents share parenting time almost equally. These updates reflect the state’s ongoing efforts to align financial responsibility with actual time spent with children, a critical issue in modern family law.
Illinois courts determine child support under the Income Shares Model codified at 750 ILCS 5/505. This model allocates support based on each parent’s income and the proportion of time the child spends with them. The 2023 amendments to the Illinois Marriage and Dissolution of Marriage Act clarified that when each parent has the child for at least 146 overnights per year, the “shared parenting” formula must be applied, adjusting both parents’ obligations proportionally.
This rule builds on In re Marriage of Carstens, 2018 IL App (2d) 170183, which held that accurate parenting time records are essential for determining whether the shared formula applies.
2023 Legislative Developments: Emphasis on Actual Parenting Time
The 2023 amendments added strong language directing courts to consider actual, not nominal, parenting time when calculating child support. The goal is to prevent strategic custody planning purely to influence financial outcomes. Judges now examine:
- Whether overnights are consistently exercised as ordered.
- Whether there is a pattern of missed parenting time.
- Whether parenting time is being inflated for financial reasons.
If a parent fails to exercise at least 146 nights despite a court order, the court may revert to the standard (non-shared) support formula.
Practical Implications for Divorce Practitioners
- Every Overnight Counts: Maintaining accurate parenting logs is now more consequential than ever, as these records directly impact support amounts.
- Modifications Under 750 ILCS 5/510: A significant change in parenting time or income can qualify as a “substantial change in circumstances,” justifying modification of child support.
- Potential for Increased Enforcement: Courts may impose penalties or amend orders when one parent consistently fails to follow the parenting plan.
The 2023 updates to Illinois child support law reflect the state’s commitment to fairness and realism in shared parenting cases. Divorce attorneys and parents must stay attentive to how parenting time is both reported and exercised, as these details now carry even greater financial significance.
These changes continue Illinois’s evolution toward a more child-centered and equitable divorce system, emphasizing the shared responsibility of both parents—financially and emotionally—in raising their children.