Child Support Calculators / Missouri
Missouri Child Support
Calculator (2026)
Free guideline estimate under Missouri's official child support guidelines — controlling authority: Mo. Sup. Ct. R. 88.01 & Civ. Proc. Form No. 14. Built for family law attorneys and their staff. No account required, and nothing you enter is stored.
Overnights always total 365 — adjusting one side updates the other.
Get the court-ready worksheet — with the guideline edition and controlling statutory citation (Mo. Sup. Ct. R. 88.01 & Civ. Proc. Form No. 14) — free for 14 days
- Printable court-ready worksheet with the full line-by-line calculation
- Guideline-edition badge and controlling-authority citation on the printout
- Adjustments detail: parenting-time credit, add-on allocation, deductions
- Save calculations to matters, plus spousal support and property division
14-day free trial · every feature included · see pricing
Informational estimate for licensed attorneys and their staff — not legal advice, not a guarantee of any court outcome. Verify against your jurisdiction’s official guidelines worksheet before relying on it.
How Missouri calculates child support
Missouri's child support guidelines are established by Mo. Sup. Ct. R. 88.01 & Civ. Proc. Form No. 14. The state uses an Income Shares model, which combines both parents’ incomes and allocates the basic support obligation between them in proportion to each parent’s share of the combined income.
This calculator applies the current guideline edition: Schedule adopted by Sup. Ct. order of 3/4/2025.
The result is the presumptive guideline amount — the starting point a Missouri court uses before considering deviation factors. The court-ready worksheet with the full line-by-line calculation, guideline-edition badge, and statutory citation is available in Aequis with a free 14-day trial.
Missouri child support FAQ
How is child support calculated in Missouri?
Missouri sets child support under its official guidelines (Mo. Sup. Ct. R. 88.01 & Civ. Proc. Form No. 14), which use a income shares approach. The guideline produces a presumptive monthly amount from the parents' incomes, the number of children, and inputs such as parenting time, childcare, and health insurance costs.
Is this the exact amount a Missouri court will order?
No. This is an informational estimate of the presumptive guideline amount. Courts can deviate based on statutory factors, and official worksheets may require inputs this calculator does not collect. Always verify against the official guidelines worksheet before relying on any number.
What income counts for child support in Missouri?
Guidelines generally start from each parent's gross income from most sources, with state-specific definitions, exclusions, and deductions. This calculator uses gross monthly income; consult Mo. Sup. Ct. R. 88.01 & Civ. Proc. Form No. 14 for what your state includes.
Do overnights affect child support in Missouri?
Many states adjust the obligation for parenting time once overnights pass a threshold, and this calculator applies Missouri's guideline treatment of overnights where the guideline provides one. The exact effect depends on the state's formula and the parents' incomes.
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