IOWA SUPPORT GUIDELINE
Iowa child support calculator & worksheet
Iowa Court Rule 9 uses a basic-support schedule of combined adjusted net monthly income, with Area A and Area B low-income comparisons instead of a single lookup for every family.
Current module status
| State | Iowa |
|---|---|
| Status | Active base worksheet module |
| Guideline model | income shares monthly table |
| Primary income field | Combined adjusted net monthly income |
How Iowa child support law works
Legal starting point. Iowa Court Rule 9 uses a guideline worksheet and a basic-support schedule that turns adjusted net income into a presumptive support amount. Low-income cases use additional comparisons rather than a simple combined-income lookup. Read Iowa Court Rules 9.5 and 9.14.
How the guideline is calculated
For the ordinary calculation, the parents’ combined adjusted net monthly income selects the basic obligation and the worksheet apportions it. Area A and Area B low-income rules, child care, insurance, maintenance sequencing, and income above the schedule require the complete analysis.
What this site’s worksheet covers
Uses Iowa Court Rules 9.3, 9.9, 9.14 and the schedule in rule 9.26, effective January 1, 2026. Enter adjusted net monthly income already determined under rules 9.5–9.8 and 9.14(1), not gross pay or bank deposits. Taxes and other income deductions are not derived here. This is basic support before medical support, health insurance and the rule 9.11A child care add-on. Those expenses, SSI-only income, other benefits, incarceration, earning capacity, other-household support and deviations require the official worksheet. The published schedule omits the $8,801–$8,850 range. Calculations requiring that row are withheld pending authoritative clarification. Combined net income above $30,000 requires a discretionary court or agency determination; the $30,000 row is a floor, not the complete order.
Documents that make the worksheet more useful
Iowa Child Support Guidelines Worksheet and financial affidavits. Gather the records that support the income, parenting-time, insurance, child-care, and other adjustment entries that apply to the family. Income rules follow the July 2026 Iowa Court Rules supplement. Tax allocation and maintenance sequencing are completed on the official worksheet.
For a filing or agreement, complete the official court forms linked on this page. They use the same guideline structure explained here, and the court applies it to the facts of the case.
Before you enter your numbers
Why can two Iowa low-income calculations differ?
Iowa's guidelines distinguish the ordinary combined-net-income calculation from low-income treatment, including the schedule's low-income areas. Selecting a table row alone may miss the required comparison. Allowed deductions and the order of any spousal-support treatment also affect the net income used.
Prepare this: Keep each parent's gross-to-net calculation and the applicable low-income worksheet lines. Note whether an existing or proposed spousal-support obligation was included and where.
Read the relevant official instructions: Iowa Court Rules 9.5 and 9.14.
These preparation notes explain one part of the state guideline. A new estimate does not change an existing order; a modification request does.
How Iowa cases actually get to a number
Ordinary cases combine adjusted net monthly income, select the basic obligation, and apportion it. Low-income families must run the Area A/Area B comparisons. Income above the schedule is not a homemade extra percentage.
Iowa Court Rule 9 uses a basic-support schedule of combined adjusted net monthly income, with Area A and Area B low-income comparisons instead of a single lookup for every family. That is a different path from neighboring states that use another model, so do not import a table, percentage, or overnight credit from somewhere else.
Parenting time in Iowa
Joint physical care has a different Iowa treatment than a primary-care schedule plus a credit. The parenting arrangement has to match the rule’s definitions before you pick a worksheet.
Costs Iowa usually treats separately
- Qualified child-care expenses
- Health-insurance costs for the children
- Extraordinary medical expenses
- Post-secondary education only if ordered
When Iowa courts leave the guideline
Rule 9 lists variance criteria. A child’s resources, a parent’s other dependents, and substantial travel are typical. Low-income rules are mandatory comparisons, not optional kindness.
Official Iowa forms to keep beside this guide
Iowa Child Support Guidelines Worksheet and financial affidavits. Income rules follow the July 2026 Iowa Court Rules supplement. Tax allocation and maintenance sequencing are completed on the official worksheet. The primary authority is the published Iowa source. Fill the official form from source documents. Use this page only to check that you chose the right Iowa path—primary versus shared, table versus percentage, add-ons versus basic support.
Where this is typically filed
District Court hears dissolution and custody cases; CSRU handles IV-D. Use the current Child Support Guidelines and schedules published with Rule 9.
Questions specific to Iowa
Why are there Area A and Area B?
They are Iowa’s low-income tests. Skipping them can overstate support for a low-income parent.
Is Iowa net or gross?
The schedule uses adjusted net monthly income as the rule defines it.
Does joint physical care use the same table cell?
Joint physical care has additional guideline steps. It is not the primary-care cell cut in half.
Run the calculator
Open the free support calculator, select Iowa, complete the state worksheet, and print or export the output for review.