The New Mexico Court of Appeals has reversed a district court's child support ruling in the case of Nation v. Roybal, affecting the financial obligations of Isiah Roybal towards his ex-wife Angela Nation and their two children. The court found errors in how child support was calculated and how uninsured healthcare expenses were assigned. This decision could have significant implications for future child support cases in New Mexico.

In this case, Roybal and Nation divorced in 2019, and Roybal has been paying child support for their two children. When their older child turned eighteen and graduated high school in 2025, the Child Support Services Division (CSSD) moved to modify the child support order. The district court adopted the hearing officer’s recommendation to reduce Roybal’s payments based on the child’s emancipation. However, Roybal appealed, claiming that the district court made several errors in its calculations and decisions.

The court's ruling highlights the importance of accurate income calculations in determining child support obligations. The case began when the CSSD sought to modify Roybal's child support payments after the emancipation of one child. The CSSD calculated Angela Nation's income based on her paystubs and other financial documents, concluding that her monthly income was $5,473.66. Roybal disputed this figure, arguing that Nation's biweekly pay structure meant her actual monthly income was higher.

Roybal's appeal raised several issues, including the calculation of Nation's income and the assignment of uninsured healthcare expenses. The court found that the district court had miscalculated Nation's income by dividing her quarterly earnings by three, rather than averaging her income over the past twelve months, as required by law. The court stated, "A discretionary decision premised on a misapprehension of the law is an abuse of discretion." This miscalculation led to an incorrect determination of Roybal's child support obligation.

Additionally, the court addressed the allocation of uninsured healthcare expenses. Roybal argued that he should be responsible for 46 percent of these expenses, in line with his share of the combined income, rather than the 54 percent assigned by the district court. The court agreed with Roybal, stating that the higher percentage was a typographical error and reversed the district court's decision on this matter as well.

The court's ruling has significant implications for child support calculations in New Mexico. It underscores the necessity for courts to adhere strictly to statutory guidelines when determining financial obligations. The decision also emphasizes the importance of accurately assessing income, particularly for parents with variable pay structures, such as biweekly payments.

Moving forward, this ruling may set a precedent for how courts handle similar cases involving child support calculations. It highlights the need for careful examination of income sources and the correct application of child support guidelines. This case not only affects Roybal and Nation but also serves as a reference for other parents navigating child support issues in New Mexico.

As for what’s next, the case will be sent back to the district court for recalculation of Roybal's child support contribution and the reassignment of uninsured healthcare expenses. The district court will need to consider the new calculations in light of the appellate court's findings. There is no indication that this ruling will be appealed further, but it remains to be seen how the district court will implement the changes required by the appellate decision.