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Missouri Child Support Calculator
Estimate Missouri child support with the Form 14 worksheet steps, the updated schedule of basic child support obligations effective January 1, 2026, and the line 11 overnight adjustment.
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How to Use the Missouri Child Support Calculator
Enter what you know and press Calculate Estimate. The calculator follows the steps of Missouri Form No. 14, the Child Support Amount Calculation Worksheet under Supreme Court Rule 88.01, with the updated schedule that took effect on January 1, 2026.
- Enter each parent's gross monthly income before taxes as Parent A and Parent B.
- Choose the number of children and the parent the children live with most of the time.
- Enter the overnights a year the children spend with the other parent.
- Add monthly work-related child care and the children's health insurance premium, and say which parent pays them. Enter the full child care cost. The calculator applies the Form 14 child care tax credit itself.
Your numbers are sent with the form, not placed in the page address, and this site does not store them. This is a planning estimate. A Missouri court or the Family Support Division decides the actual amount.
Missouri Child Support Laws and Changes for 2026
Looking for new child support guidelines in Missouri for 2026? By an order dated March 4, 2025, the Supreme Court of Missouri adopted a new Form 14 and the 2024 Child Support Guideline Review Updated Schedule, effective January 1, 2026. This calculator uses that schedule and the Form 14 directions (form OSCA 01-26 CS01).
According to the Form 14 assumptions, the updated schedule reflects 2024 price levels, 2024 federal and Missouri income tax rates, and a self-support reserve based on the 2024 federal poverty guideline. The schedule runs from $0-1,300 up to $40,000 of combined monthly income, for one to six children.
A new schedule does not automatically change an existing order. A parent generally has to ask the court or the Family Support Division to modify it.
How Missouri Calculates Child Support: The Form 14 Steps
Missouri uses an income shares model based on gross income. Section 452.340, RSMo, makes the Form 14 amount a rebuttable presumption, which means it is the correct amount unless the court finds in writing that it is unjust or inappropriate. Form 14 works line by line:
- Line 1-3: each parent's monthly gross income, plus maintenance received, minus maintenance paid, other support orders and support for other children, gives the adjusted monthly gross income.
- Line 4: each parent's share of the combined income, to the nearest tenth of a percent.
- Line 5: the basic child support amount from the schedule, after rounding combined income to the nearest $50 line ($25 and $75 round up).
- Lines 6-7: additional costs: child care (net of the tax credit for the receiving parent), health insurance for the children, and agreed or court-ordered extraordinary costs.
- Lines 8-9: the basic amount plus additional costs, multiplied by the paying parent's share.
- Lines 10-12: subtract the costs the paying parent pays directly and the overnight adjustment. The result is the presumed child support amount.
All amounts on the worksheet are rounded to the nearest dollar, with 50 cents rounding up. The "parent receiving support" is the parent with the majority of parenting time.
The Missouri Schedule of Basic Child Support Obligations
The 2024 updated schedule runs in $50 steps of combined adjusted monthly gross income, for one to six children. Every combined income from $0 to $1,300 uses $60. These are sample lines:
| Combined monthly gross income | One child | Two children | Three children |
|---|
| $2,000 | $403 | $529 | $536 |
| $3,000 | $579 | $882 | $1,067 |
| $4,000 | $753 | $1,148 | $1,389 |
| $5,000 | $918 | $1,390 | $1,670 |
| $6,000 | $1,051 | $1,589 | $1,906 |
| $8,000 | $1,199 | $1,795 | $2,132 |
| $10,000 | $1,337 | $1,987 | $2,345 |
| $15,000 | $1,743 | $2,571 | $3,008 |
| $20,000 | $2,123 | $3,105 | $3,599 |
| $30,000 | $2,731 | $4,044 | $4,754 |
| $40,000 | $3,332 | $4,905 | $5,728 |
Combined income is rounded to the nearest line before reading the schedule. The schedule stops at $40,000 a month. Above that, the Form 14 directions list higher income as a factor the court considers, so this calculator does not estimate it.
The Line 11 Overnight Adjustment
The paying parent can get a credit on line 11 for part of what they spend during their overnights. It equals the line 5 basic amount times the percentage for the number of overnights a year:
| Overnights a year | Adjustment |
|---|
| Less than 36 | 0% |
| 36-72 | 6% |
| 73-91 | 9% |
| 92-109 | 10% |
| 110-115 | 13% |
| 116-119 | 15% |
| 120-125 | 17% |
| 126-130 | 20% |
| 131-136 | 23% |
| 137-141 | 25% |
| 142-147 | 27% |
| 148-152 | 28% |
| 153-158 | 29% |
| 159-164 | 30% |
| 165-170 | 31% |
| 171-175 | 32% |
| 176-180 | 33% |
| 181-183 | 34% |
A court may apply more than 34%, up to 50%, if the standard result is unjust, especially when the paying parent covers most non-duplicated fixed costs such as clothing and school supplies. The adjustment can be rebutted if the parenting time is not actually exercised.
Low-income limit: line 11 is allowed only if the receiving parent's adjusted income is more than the amount below, or the paying parent's income minus the support amount is at or below it (or the receiving parent's expenses are paid by someone they live with):
| Children | Receiving parent income must exceed |
|---|
| 1 child | $1,750 |
| 2 children | $2,200 |
| 3 children | $2,550 |
| 4 children | $2,850 |
| 5 children | $3,100 |
| 6 children | $3,600 |
When parenting time is substantially equal, Form 14 presumes the parent with the higher gross income is the parent paying support.
Low-Income Cases and the Shaded Area
The schedule includes a self-support reserve for the paying parent. The lowest combined incomes use a $60 amount, and the shaded part of the schedule covers paying-parent incomes up to $1,750 for one child, $2,200 for two, $2,550 for three, $2,850 for four, $3,100 for five and $3,600 for six.
When the paying parent's own adjusted income falls in the shaded area, Form 14 calls for two calculations. The first is the normal one. The second uses only the paying parent's own income on the schedule, with that parent paying 100% of that amount plus their percentage of the additional costs, and the same line 11 adjustment. The lower of the two is the presumed amount. This calculator runs both automatically.
Child Care, Health Insurance and Medical Costs
- Child care of the receiving parent (line 6a): reasonable work-related child care, minus the Form 14 child care tax credit. The credit is the lesser of the cost or $250 for one child ($500 for two or more), times a rate from 35% for gross income up to $1,250 a month down to 20% for income of about $3,584 or more.
- Child care of the paying parent (line 6b): reasonable work-related child care with no tax credit adjustment.
- Health insurance (line 6c): the premium for the children in this case. If only a family premium is known, divide it by the number of people covered and multiply by the number of children in the case.
- Extraordinary costs (lines 6d and 6e): uninsured medical costs and other agreed or court-ordered costs. Unreimbursed medical costs over $250 per family member a year are treated as extraordinary. These are not part of this calculator.
Costs paid by the paying parent are credited back on line 10, so that parent effectively pays only their income share of them.
Missouri Child Support Examples
In each example the children live mostly with Parent B, so Parent A is the parent paying support. Amounts are monthly and come from this calculator.
Example 1: One child, basic case
A earns $5,000 and B earns $3,000. The schedule amount for $8,000 and one child is $1,199, and A's 62.5% share is $749 a month.
Example 2: Two children with child care
A earns $6,000, B earns $4,000, and B pays $500 a month for child care. B's tax credit is 20% of $500, or $100, so $400 is added. The schedule amount is $1,987, the total is $2,387, and A's 60% share is $1,432 a month.
Example 3: Same family, 100 overnights with A
100 overnights gives a 10% line 11 adjustment: 10% of $1,987 is $199. A pays $1,432 minus $199, or $1,233 a month.
Example 4: Substantially equal time
A earns $7,000 and B earns $3,000, with one child and 182 overnights with A. A has the higher income, so A is presumed to pay. A's 70% share of $1,337 is $936, minus the 34% adjustment of $455. A pays $481 a month.
Example 5: Low-income paying parent
A earns $1,500 and B earns $4,000, with one child. The normal calculation is 27.3% of $995, or $272. A's own income is in the shaded area, so the second calculation uses the schedule amount for $1,500, which is $184. A pays the lower amount, $184 a month.
Example 6: Overnight adjustment not allowed
A earns $5,000 and B earns $1,500, with one child and 100 overnights with A. B's income is not more than $1,750, and A's income minus support is well above $1,750, so no line 11 adjustment is allowed. A pays 76.9% of $1,096, or $843 a month.
These are illustrations produced from Form 14 and the schedule, not court rulings.
What Counts as Income in Missouri
Form 14 uses gross income, one-twelfth of yearly gross income. It includes salaries, wages, commissions, dividends, severance pay, pensions, interest, trust income, annuities, partnership distributions, Social Security and retirement benefits, workers' compensation, unemployment and disability benefits, veterans' disability benefits and military allowances for housing and food. Overtime, bonuses, second jobs, recurring capital gains and other items may be included in whole or in part.
Excluded are TANF, Medicaid, SSI, food stamps, other income-based public assistance, Social Security disability benefits received on behalf of a child, and child support received for other children. Self-employment and rental income is gross receipts minus ordinary and necessary expenses. A court can impute income to a parent who is unemployed or underemployed.
What This Missouri Estimate Does Not Include
- Maintenance paid or received (lines 1a and 2b), other child support orders (line 2a), and support for other children in each home (line 2c).
- Uninsured extraordinary medical costs and other extraordinary child-rearing costs (lines 6d and 6e).
- Imputed income, and any finding that the presumed amount is unjust or inappropriate.
- A line 11 adjustment over 34%, and the exception that allows line 11 when the receiving parent's expenses are paid by someone they live with.
- The form takes one child care figure and one insurance figure, paid by one parent, and assumes all the children are in the child care.
Missouri Child Support Terms
- Form 14
- The Missouri Child Support Amount Calculation Worksheet under Supreme Court Rule 88.01.
- Parent paying support / parent receiving support
- The parent receiving support is the parent with the majority of parenting time. With substantially equal time, the higher earner is presumed to pay.
- Adjusted monthly gross income
- Gross income plus maintenance received, minus maintenance paid and support for other children (line 3).
- Basic child support amount
- The schedule amount for the combined adjusted income and number of children (line 5).
- Line 11 adjustment
- The credit for part of what the paying parent spends during overnights.
- Presumed child support amount
- The line 12 result, presumed correct unless the court finds it unjust or inappropriate.
Frequently Asked Questions About Missouri Child Support
Is this the official Missouri child support calculator?
No. ChildSupportCalculator.xyz is an independent tool and is not affiliated with the State of Missouri, its courts or the Family Support Division. It follows Form 14 and the schedule effective January 1, 2026. A court or the Family Support Division sets the actual amount.
How is child support calculated in Missouri?
Missouri uses Form 14. The parents' adjusted gross incomes are added, the basic amount comes from the schedule, child care and health insurance are added, and the total is split by income share. Costs the paying parent pays directly and an overnight adjustment are then subtracted.
Is there a new Missouri child support schedule in 2026?
Yes. By an order dated March 4, 2025, the Supreme Court of Missouri adopted a new Form 14 and the 2024 Child Support Guideline Review Updated Schedule, effective January 1, 2026. This calculator uses that schedule.
Does Missouri use gross or net income for child support?
Gross income. Form 14 starts from each parent's monthly gross income before taxes, then adjusts for maintenance and support of other children.
How do overnights affect child support in Missouri?
The paying parent gets a line 11 adjustment: a percentage of the basic amount, from 6% for 36-72 overnights a year up to 34% for 181-183. Fewer than 36 overnights gives no adjustment, and in low-income cases the adjustment may not be allowed.
Who pays child support with 50/50 custody in Missouri?
With substantially equal parenting time, Form 14 presumes the parent with the higher gross income is the parent paying support. The presumption can be rebutted, for example by showing which parent pays most of the children's non-duplicated fixed expenses.
What is the minimum child support in Missouri?
Form 14 has no fixed minimum order. The schedule amount for combined income from $0 to $1,300 a month is $60 for one to six children, and the paying parent pays their income share of that amount.
How is child care handled in Missouri child support?
Reasonable work-related child care is added to the basic amount. For the receiving parent, Form 14 first subtracts a child care tax credit based on that parent's income. Child care paid by the paying parent is added without that credit and then credited back to them.
What if our income is above $40,000 a month?
The schedule ends at $40,000 of combined adjusted monthly income. Higher income is a factor the court considers in deciding the amount, so this calculator does not estimate it.
Does the Missouri calculator need my personal details or a login?
No. This site needs no login and does not store your numbers.
Official Missouri Child Support Resources
Published: October 15, 2026
Last reviewed: October 15, 2026
Researched and reviewed by Eric John, founder and editor, using official state statutes and guidance. How we build and check our calculators · Corrections
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