Iowa Child Support Calculator (2026)

Estimate your child support payments in Iowa using our free calculator based on the official Iowa Code § 598.21B. Enter your income details below to get an instant estimate.

Iowa Child Support Calculator

Based on Iowa's 2024 Iowa Code § 598.21B

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This is an estimate only. See our full disclaimer.

Key Facts: Child Support in Iowa

  • Iowa uses the Income Shares model, meaning child support is based on both parents' combined net income.
  • The basic child support obligation for 1 child ranges from approximately $96/month at $1,000 combined income to $1,284/month at $20,000 combined monthly income.
  • Each parent pays their proportional share of the total obligation based on their percentage of the combined net income.
  • Iowa includes adjustments for health insurance costs, work-related child care, and parenting time arrangements.
  • A self-support reserve ensures the paying parent retains enough income for basic needs, based on the federal poverty level.

Source: Iowa Code § 598.21B • Last verified: 2026-05-30

How Much Is Child Support in Iowa?

If you make $60,000 a year in Iowa, child support for 1 child is estimated at $509 per month ($6,108 per year) based on the Iowa Code § 598.21B. This assumes the other parent earns approximately $36,000/year. Actual amounts depend on both parents' incomes, custody arrangements, and additional expenses.

If you make $1,000 a week ($52,000/year) in Iowa, child support for 1 child is approximately $469/month.

Iowa Child Support Estimates by Income (2026)

Annual Income 1 Child 2 Children 3 Children
$40,000/yr $399/mo $561/mo $665/mo
$50,000/yr $458/mo $644/mo $766/mo
$60,000/yr $509/mo $718/mo $854/mo
$70,000/yr $553/mo $782/mo $933/mo
$80,000/yr $593/mo $841/mo $1,005/mo
$100,000/yr $663/mo $944/mo $1,132/mo
$120,000/yr $723/mo $1,031/mo $1,240/mo

Estimates assume the other parent earns 60% of your income. Actual amounts vary based on both parents' incomes, custody time, and adjustments. Compare all states →

How Child Support Is Calculated in Iowa

Iowa uses the Income Shares model to calculate child support obligations. This model combines both parents' incomes to determine the total child support obligation, then divides it proportionally based on each parent's share of the combined income.

Factors That Affect Child Support in Iowa

Both parents' net monthly incomes
Number of children requiring support
Health insurance premiums for the children
Work-related child care costs
Parenting time and custody arrangement
Extraordinary expenses for the child
Other child support obligations

Important Notes for Iowa

  • Iowa uses the Income Shares model, combining both parents' net incomes to determine the total child support obligation.
  • Net income is calculated by deducting federal and state taxes, Social Security, Medicare, mandatory retirement contributions, and union dues from gross income.
  • The court may deviate from guidelines when a child has extraordinary medical, educational, or special needs.
  • Iowa allows a credit for qualified additional dependent children from other relationships.

Example Child Support Calculation in Iowa

Scenario: Parent A earns $5,000/month, Parent B earns $3,000/month, 2 children.

Step 1: Combined monthly income: $5,000 + $3,000 = $8,000

Step 2: Parent A's income share: $5,000 / $8,000 = 62.5%

Step 3: Look up basic obligation from the guidelines schedule for $8,000 combined income and 2 children.

Step 4: Multiply the basic obligation by Parent A's share (62.5%) to determine their payment.

Note: Additional adjustments for health insurance, child care, and parenting time may apply.

Frequently Asked Questions About Iowa Child Support

How is child support calculated in Iowa?
Iowa uses the Income Shares model. Both parents' net incomes are combined, and a basic child support obligation is determined from the state guidelines schedule. Each parent pays their proportional share based on their percentage of the combined net income. Adjustments are made for health insurance, child care costs, and parenting time.
What income is used for Iowa child support?
Iowa uses net income, which is gross income minus federal and state taxes, Social Security, Medicare, mandatory pension contributions, and union dues. Gross income includes wages, salaries, bonuses, commissions, self-employment income, rental income, and other regular income sources.
Does shared custody affect child support in Iowa?
Yes, Iowa considers parenting time when calculating child support. When the non-custodial parent has the children for a significant portion of the time (typically more than 127 overnights per year), the court may apply an adjustment that reduces the child support obligation to reflect the increased direct expenses during those overnights.
How long does child support last in Iowa?
In Iowa, child support generally continues until the child turns 18. However, if the child is still enrolled in high school or an equivalent program at age 18, support may continue until the child graduates or turns 19, whichever comes first. Support may also continue for a child with a disability.
Can Iowa child support be modified?
Yes, either parent can request a modification if there has been a substantial change in circumstances, such as a significant change in income, a change in custody, or a change in the child's needs. Iowa also allows a review every three years to determine if the current order differs from the guidelines by 10% or more.

About This Calculator

This calculator uses the official Iowa Code § 598.21B (2024 guidelines) to estimate child support in Iowa. Calculations were last verified against the official source on 2026-05-30.

Disclaimer: This calculator provides estimates only and does not constitute legal advice. Actual child support amounts are determined by Iowa courts and may differ based on factors not included here. For legal advice, consult a Iowa family law attorney.

Our methodology: Based on the Income Shares model as defined in the Iowa Code § 598.21B. Updated for 2026.

Child Support Calculators for Other States

Alabama Income Shares model Alaska Percentage of Income model Arizona Income Shares model Arkansas Income Shares model California Algebraic Formula (§ 4055) model Colorado Income Shares model

View all 50 state calculators →