Missouri Child Support Calculator (2026)

Estimate your child support payments in Missouri using our free calculator based on the official Missouri Form 14 (MO Supreme Court Rule 88.01). Enter your income details below to get an instant estimate.

Missouri Child Support Calculator

Based on Missouri's 2024 Missouri Form 14 (MO Supreme Court Rule 88.01)

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This is an estimate only. See our full disclaimer.

Key Facts: Child Support in Missouri

  • Missouri uses the Income Shares model via the Form 14 worksheet, basing child support on both parents' combined adjusted gross income.
  • The basic child support obligation for 1 child ranges from approximately $168/month at $1,000 combined income to $1,962/month at $30,000 combined monthly income.
  • Each parent pays their proportional share of the total obligation based on their percentage of the combined income.
  • Missouri includes adjustments for health insurance, work-related child care, and custody time credits for the non-custodial parent.
  • The Form 14 amount is presumed correct but courts may deviate if the result is unjust or inappropriate based on the specific circumstances.

Source: Missouri Form 14 (MO Supreme Court Rule 88.01) • Last verified: 2026-05-30

How Much Is Child Support in Missouri?

If you make $60,000 a year in Missouri, child support for 1 child is estimated at $579 per month ($6,948 per year) based on the Missouri Form 14 (MO Supreme Court Rule 88.01). 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 Missouri, child support for 1 child is approximately $526/month.

Missouri Child Support Estimates by Income (2026)

Annual Income 1 Child 2 Children 3 Children
$40,000/yr $437/mo $636/mo $734/mo
$50,000/yr $512/mo $745/mo $861/mo
$60,000/yr $579/mo $844/mo $976/mo
$70,000/yr $641/mo $934/mo $1,079/mo
$80,000/yr $698/mo $1,016/mo $1,176/mo
$100,000/yr $800/mo $1,166/mo $1,350/mo
$120,000/yr $891/mo $1,299/mo $1,505/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 Missouri

Missouri 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 Missouri

Both parents' adjusted gross monthly incomes
Number of children
Custody and visitation schedule
Health insurance costs for the children
Work-related child care costs
Extraordinary medical expenses
Other child or spousal support obligations
Education-related expenses

Important Notes for Missouri

  • Missouri uses the Income Shares model through its Form 14 worksheet, combining both parents' adjusted gross incomes to determine the total child support obligation.
  • Adjusted gross income is calculated by subtracting other court-ordered child support, spousal support paid, and other allowable deductions from gross income.
  • Missouri applies a custody adjustment credit when the non-custodial parent exercises overnight custody for more than the standard amount of time.
  • The court may deviate from Form 14 if the presumed amount is unjust or inappropriate, considering factors such as extraordinary costs or the child's special needs.

Example Child Support Calculation in Missouri

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 Missouri Child Support

How is child support calculated in Missouri?
Missouri uses the Income Shares model through its Form 14 worksheet. Both parents' adjusted gross incomes are combined, and a presumed child support amount is determined from the state schedule. Each parent's share is proportional to their percentage of the combined income. Adjustments are made for health insurance, child care costs, and custody arrangements.
What is Form 14 in Missouri child support?
Form 14 is the official worksheet used by Missouri courts to calculate child support. It follows the Income Shares model and walks through the calculation step by step, including both parents' incomes, adjustments, the schedule amount, and credits for health insurance and child care. The resulting amount is presumed to be correct unless the court finds it unjust or inappropriate.
What income is included in Missouri child support calculations?
Missouri uses adjusted gross income, which includes wages, salaries, commissions, bonuses, self-employment income, workers' compensation, unemployment, pensions, Social Security, rental income, and investment income. Adjustments are made for pre-existing child support orders, spousal support obligations, and other allowable deductions.
Can the court deviate from Missouri child support guidelines?
Yes, Missouri courts may deviate from the Form 14 presumed amount if they find it unjust or inappropriate after considering all relevant factors. Common reasons for deviation include extraordinary medical expenses, the child's special educational needs, seasonal income variations, or a significant difference in the parents' living costs.
How long does child support last in Missouri?
In Missouri, child support typically continues until the child turns 18. However, if the child is still enrolled in secondary school at age 18, support continues until age 21 or graduation from secondary school, whichever comes first. Support may also continue for a child with a physical or mental disability.

About This Calculator

This calculator uses the official Missouri Form 14 (MO Supreme Court Rule 88.01) (2024 guidelines) to estimate child support in Missouri. 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 Missouri courts and may differ based on factors not included here. For legal advice, consult a Missouri family law attorney.

Our methodology: Based on the Income Shares model as defined in the Missouri Form 14 (MO Supreme Court Rule 88.01). Updated for 2026.

Child Support Calculators for Other States

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