Two recent developments make up the new child support laws in Iowa: the Iowa Supreme Court adopted updated child support guidelines that took effect January 1, 2026, and a 2025 statute eliminated the court’s authority to order parents to pay for a child’s college expenses. Together they change what a support order can require and, for many families, what an existing order should now look like.1Iowa Department of Health and Human Services. Iowa Child Support – What’s New2Iowa Legislature. Iowa Code 598.21F – Postsecondary Education Subsidy
The 2026 Guidelines Update
The Iowa Supreme Court adopted revised Chapter 9 guidelines after considering the 2025 report and recommendations of the Iowa Child Support Guidelines Review Committee.3Iowa Judicial Branch. In the Matter of Adopting Amendments to the Iowa Child Support Guidelines, Chapter 9 of the Iowa Court Rules Federal law under 45 CFR 302.56 requires each state to review its guidelines at least every four years so support amounts keep pace with the actual cost of raising children.1Iowa Department of Health and Human Services. Iowa Child Support – What’s New The updated rules apply to all cases pending on or after January 1, 2026.4Iowa Judicial Branch. Iowa Court Rules Chapter 9 – Child Support Guidelines
The most visible change is in Rule 9.26, the Schedule of Basic Support Obligations. The schedule recalibrates monthly support amounts across income levels to reflect current costs for housing, food, healthcare, and childcare. The low-income adjustment formulas in the shaded portion of the schedule were also revised.4Iowa Judicial Branch. Iowa Court Rules Chapter 9 – Child Support Guidelines
For anyone with an existing order, the practical question is whether the new tables would produce a different number. If your current order differs by 10 percent or more from the amount the new guidelines would produce, that difference alone qualifies as a substantial change in circumstances and is grounds for a modification.5Iowa Legislature. Iowa Code 598.21C – Modification of Child, Spousal, or Medical Support Orders Whether that shift favors you or the other parent depends on your incomes and the age and number of children involved, so running the numbers through the current schedule is worthwhile even if nothing else about your situation has changed.
End of Court-Ordered College Contributions
Before July 1, 2025, an Iowa court could order a parent to contribute to a child’s college costs through what the statute called a “post-secondary education subsidy.” That authority has been removed. Under the amended Iowa Code Section 598.21F, the court “shall not order either of the parties to pay a postsecondary education subsidy under a temporary order or final judgment or decree.”2Iowa Legislature. Iowa Code 598.21F – Postsecondary Education Subsidy The change applies to orders entered or pending on or after July 1, 2025, which means existing orders containing college contribution provisions are affected too.
The consequence for families is direct. A parent who was counting on the other parent being legally required to help pay for tuition, room, and board cannot rely on the court to compel those payments. Any arrangement to share college costs now has to be voluntary between the parents. If your decree includes a post-secondary subsidy provision, ask an attorney whether it remains enforceable, because the answer depends on the timing and posture of your case.
Modifying an Order Under the New Rules
The 2026 guideline update creates a new opening for modification, and the 2025 college-subsidy change may prompt a look at older decrees. Iowa offers two ways to change an existing support order: filing in district court, or going through Iowa’s Child Support Services administratively.
Court Modification
Either parent can file a Petition to Modify with the district court. You need to show a substantial change in circumstances, which Iowa Code Section 598.21C defines broadly to include changes in employment, income, medical expenses, number of dependents, health of a party, or the child’s needs. The 10 percent variance from the current guidelines counts as a substantial change on its own.5Iowa Legislature. Iowa Code 598.21C – Modification of Child, Spousal, or Medical Support Orders
The petition is filed through the Iowa eFile system along with a completed Child Support Guidelines Worksheet.6Iowa Judicial Branch. Electronic Filing The filing fee is $110, with a fee waiver available if you cannot afford it.7Iowa Judicial Branch. Civil Court Fees You will also submit the Financial Statement, Form 324, which requires current income, deductions, and insurance costs.8Iowa Judicial Branch. Rule 17.300 – Form 324 Child Support Modification Financial Statement Recent pay stubs, tax returns, and health insurance premium information make those forms easier to complete accurately.
After filing, the other parent must be served, typically through a county sheriff, and then has 20 days to file a written response.9Iowa Judicial Branch. Iowa Rules of Civil Procedure – Rule 1.303 In family law cases where at least one party has an attorney, mandatory mediation or a judicial settlement conference is generally required before trial. That requirement does not apply to cases initiated by Child Support Services.10Iowa Judicial Branch. New Mediation Requirement in Family Law Cases to Start March 1
Administrative Modification Through Child Support Services
If your case is enforced through Iowa’s Child Support Services, you may be able to modify the order administratively without filing in court. For an administrative modification, at least one of the following must be true:11Iowa Department of Health and Human Services. Procedures for Modifying Child Support Obligations – Review and Adjustment
- A parent’s net income has changed by 50 percent or more, and the change started at least three months ago and is expected to last another three months.
- A child born to the same parents needs to be added to the order, and paternity is established.
- The order was set at zero or reserved a dollar amount, and conditions have changed.
- A mistake was made in the support amount or medical support provisions.
- The court previously reduced support because the payor was a minor, and that circumstance has changed.
A separate review and adjustment process is available if at least 24 months have passed since the order was entered or last changed. A cost-of-living alteration is also available when both parents agree in writing.11Iowa Department of Health and Human Services. Procedures for Modifying Child Support Obligations – Review and Adjustment For any of these administrative paths, Child Support Services must be enforcing the order, Iowa must have jurisdiction to change it, and the obligation must extend at least 12 more months into the future.
What Did Not Change
Most of Iowa’s child support framework is intact. The state still uses an income shares approach, combining both parents’ adjusted net incomes, looking up the basic obligation on the Rule 9.26 schedule, and splitting that amount between the parents in proportion to their incomes.4Iowa Judicial Branch. Iowa Court Rules Chapter 9 – Child Support Guidelines Both parents still file a Child Support Guidelines Worksheet from Rule 9.27 before any support hearing.
Support still generally ends when the child turns 18, extending to 19 only if the child is still working full-time toward a high school diploma or equivalency and completion is reasonably expected before the nineteenth birthday.12Iowa Judicial Branch. Child Support With the college subsidy gone, that age-19 cap is now the outer limit of a court-ordered obligation. Support does not stop automatically on the child’s birthday; the paying parent typically needs to file to terminate the order, or the order itself must specify a termination date. Arrears remain collectible after termination, and interest on unpaid support continues to run at 10 percent per year, starting 30 days after each payment was due.
Enforcement tools are also unchanged. Income withholding remains the default collection method, deducting support directly from wages or unemployment benefits.13Iowa Legislature. Iowa Code Chapter 252B – Child Support Recovery License sanctions apply when a parent owes three or more months of delinquent support, allowing Child Support Services to suspend driver’s licenses, professional licenses, recreational licenses, and vehicle registrations.14Iowa Department of Health and Human Services. License Sanction Federal tax refund intercepts kick in at $150 owed to the state or $500 owed to the family.15Iowa Department of Health and Human Services. Federal Tax Refund Offsets and Federal Administrative Offsets Arrears above $2,500 can trigger passport revocation, restriction, or denial.
If you have an order predating 2026, or a decree with college contribution language predating July 2025, the new rules likely affect you even though the rest of your case looks the same. Running your numbers through the current guidelines is the fastest way to know whether it is worth acting on the change.