How Iowa Calculates Child Support

Iowa uses the Income Shares Model to determine child support obligations. The guidelines are established under Iowa Court Rules Ch. 9.

Key Facts About Iowa Child Support

• Iowa uses the Income Shares model under Iowa Court Rules Chapter 9, combining both parents' net monthly incomes to determine the basic child support obligation.
• The basic obligation is determined from the Iowa Schedule of Basic Support Obligations (Rule 9.2) based on combined net monthly income and the number of children.
• A parenting time credit applies when the obligor has 128 or more overnights per year (Iowa uses a 127+ overnight threshold), reducing the obligation to reflect the increased direct costs borne by the obligor.
• Health insurance premiums for the children and work-related childcare costs are added to the basic obligation and divided proportionally between parents.
• Iowa net income is calculated by deducting federal and state taxes, FICA, mandatory pension contributions, union dues, and prior child support obligations from gross income.
• Qualified additional expenses — including extraordinary medical costs and educational expenses — may be added to the basic obligation and shared between parents.
• Courts may deviate from the guidelines upon specific written findings that application would be unjust or inappropriate under the circumstances.

Disclaimer

This calculator provides estimates only and is not a substitute for legal advice. The actual amount ordered by a Iowa court may differ based on factors including but not limited to: special needs of the child, travel expenses for visitation, extraordinary educational expenses, and the court's discretion to deviate from the guidelines.