In re Marriage of Vanduyne — Prenuptial agreement cannot limit child’s right to support; upward deviation warranted due to income disparity

Case
In re Marriage of Craig J. VanDuyne and Meagan K. VanDuyne
Court
Illinois Appellate Court, Third District
Judge
Brennan (elected 2022)
Date Decided
June 30, 2026
Docket No.
3-25-0249
Topics
Child support; Prenuptial agreements; Guideline deviation; Property distribution
Source
Read the full opinion

Background

Craig and Meagan VanDuyne married in 2007 and had four children between 2007 and 2015. Craig worked in the utility industry, earning approximately $150,000 annually, while Meagan initially stayed home, then later obtained a teaching degree and earned approximately $50,000 annually. In 2007, the parties executed a prenuptial agreement that designated separate property for each spouse and included a mutual waiver of maintenance. When Craig filed for divorce in December 2020, the trial court incorporated the prenuptial agreement into the judgment of dissolution, awarding Craig substantially all marital property (multiple income-generating real estate parcels, the marital residence) while awarding Meagan minimal assets.

The trial court reserved child support and other issues for later hearing. At that hearing, the trial court initially awarded $2,169 monthly child support, but following Craig’s motion to reconsider, reduced the award to $800 per month. Critically, the trial court ordered that $500 of the monthly child support be offset against $20,157 in attorney fees Meagan owed Craig for unsuccessfully challenging the prenuptial agreement’s validity.

The Court’s Holding

The Illinois Appellate Court reversed, holding that trial courts may not offset child support obligations against unrelated personal debts between parents. The court found this practice violates public policy because a child’s right to support cannot be compromised by parental disputes. The court further held that the trial court abused its discretion by declining to award an upward deviation from the child support guideline amount.

The appellate court established that when calculating child support, courts must consider not only income and parenting time but also whether the guideline amount adequately approximates the standard of living the children would have experienced had the marriage remained intact. Here, because the prenuptial agreement directed that Craig receive essentially the entire marital estate while earning nearly three times Meagan’s income, the guideline calculation alone failed to account for the substantial disparity in the parents’ financial resources and their ability to support the children. The court emphasized that a prenuptial agreement cannot limit a child’s right to support—a statutory obligation that exists independent of spousal property rights.

Key Takeaways

  • Prenuptial agreements cannot waive or limit a child’s statutory right to parental support, which is a separate obligation from spousal maintenance and property division.
  • Offsetting child support payments against unrelated parental debts violates public policy and is impermissible, even when one parent owes the other attorney fees.
  • Trial courts must consider actual financial circumstances beyond the statutory guideline formula when the guideline amount would fail to ensure children receive adequate support relative to their parents’ ability to pay.
  • Significant income and asset disparity between parents resulting from a prenuptial agreement distribution may warrant substantial upward deviation from the guideline child support amount.

Why It Matters

This decision protects children from the unintended consequences of prenuptial agreements by establishing that such agreements cannot compromise a child’s right to support. The ruling clarifies that the financial realities created by property division—here, Craig receiving nearly all marital assets while Meagan struggled with $120,000 in student loans—must factor into child support calculations. Courts cannot mechanically apply the statutory guideline formula while ignoring whether the resulting award maintains the children’s standard of living or whether one parent’s financial constraints arising from the property division prevent adequate support.

The prohibition on offsetting child support also protects economically vulnerable spouses who lose asset claims due to prenuptial enforcement. Meagan faced the double burden of losing most marital property and owing $20,157 for unsuccessfully defending against the prenuptial agreement. Allowing Craig to recoup these fees through child support reduction would have further compromised the children’s welfare. The decision signals that Illinois courts must balance prenuptial enforcement against the separate and paramount interests of minor children in receiving adequate support.

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