Missouri Child Support Calculator (2026)
Missouri calculates child support under income-shares guidelines (Mo. Sup. Ct. R. 88.01 (Civil Procedure Form No. 14); RSMo § 452.340). Estimate the guideline amount below.
Income basis: combined monthly adjusted gross income.
Enter the income above to see the guideline estimate.
Simplified guideline estimate, interpolated from the official schedule — before health-insurance, childcare, and parenting-time adjustments. For the exact figure use the official Missouri calculator.
Your Case Details
Answer a few questions to see your estimated range.
Approximate gap between higher-earner and lower-earner.
Estimated Monthly Support
$840 — $1,560
State formulas vary significantly. This estimate uses national averages — your state's guidelines may produce a different number.
Editorially Reviewed — Content reviewed for accuracy using published legal research, government data, and verified court records. See our methodology
Reviewed by Leonard Goldberg, Editor · Last updated
Missouri uses the income-shares model: both parents' incomes are combined, the official schedule sets a basic support obligation, and each parent owes their proportional share (Mo. Sup. Ct. R. 88.01 (Civil Procedure Form No. 14); RSMo § 452.340). The calculator above interpolates the official schedule for a quick estimate — health-insurance, child-care, and parenting-time adjustments come on top.
How Missouri Calculates Child Support
Missouri calculates child support under the income shares model via the court-mandated Form No. 14 (Missouri Supreme Court Rule 88.01), which creates a rebuttable presumption of the correct support amount. The basis is the parents' combined monthly adjusted gross income (Line 3 of the form), for which the basic amount is read from the Schedule of Basic Child Support Obligations (CS01 SCH) and split proportionally by income share (Line 4). The current schedule was adopted by the Supreme Court on March 4, 2025 as part of the 2024 Child Support Guideline Review and has been binding since January 1, 2026 (the form structure itself was last revised November 4, 2021).
Statutory basis: Mo. Sup. Ct. R. 88.01 (Civil Procedure Form No. 14); RSMo § 452.340. Exact figure: official Missouri calculator.
Official Schedule — Excerpt
Basic support obligation at selected combined incomes (combined monthly adjusted gross income), from the official Missouri schedule:
| Combined income | 1 child | 2 children | 3 children |
|---|---|---|---|
| $3,300 | $631 | $962 | $1,163 |
| $5,000 | $918 | $1,390 | $1,670 |
| $7,500 | $1,163 | $1,747 | $2,078 |
| $10,000 | $1,337 | $1,987 | $2,345 |
Worked Example
Example (2 children): Parent A (receiving) grosses $5,000/month, Parent B (paying) $2,500/month — combined adjusted gross income $7,500/month. The schedule (2 children, $7,500) yields a basic support amount of $1,747/month (Line 5). B's income share (Line 4) is 2,500 / 7,500 = 33.3%. Without additional health/child-care costs and without an overnight adjustment (Line 11 = 0), B's presumptive support (Line 12) is 33.3% of $1,747 ≈ $582/month.
When Courts Deviate From the Guideline
- The financial needs and resources of the child
- The financial resources and needs of both parents
- The standard of living the child would have enjoyed had the marriage not been dissolved
- The child's physical and emotional condition and educational needs
- The custody/visitation arrangement and the time each parent spends with the child
- Each parent's reasonable work-related child-care expenses
Frequently Asked Questions
Is there an income ceiling for Missouri child support calculations?
No hard statutory cap, but the official schedule ends at $40,000 combined monthly adjusted gross income (top row, e.g., 2 children = $4,905/month). Above that, no table value exists — the court sets the amount in its discretion under the RSMo §452.340.1 criteria, usually anchored to the schedule's top row.
What counts as 'gross income' for Form 14 in Missouri?
Per the official Form 14 directions: wages, salaries, commissions, severance, pensions, interest, trust income, Social Security benefits, unemployment and disability benefits, VA disability, and military allowances, among others. Overtime, bonuses, and second-job income may be included depending on circumstances. Expressly EXCLUDED: TANF, Medicaid, SSI, child-related SSD benefits, food stamps, general assistance, and Title IV-E adoption subsidies. For self-employment, net profit after ordinary business expenses applies.
How does shared custody (overnight share) affect Missouri support?
Form 14 includes a dedicated adjustment in Line 11: 'Adjustment for a portion of amounts expended by the parent obligated to pay support during periods of overnight visitation or custody' — the basic amount (Line 5) is multiplied by a percentage specified in the directions and deducted from the obligation. The more overnights the paying parent has, the larger the reduction.
Until when does support run in Missouri — is there a college clause?
Generally, the obligation ends at the child's 18th birthday (or earlier upon death, marriage, or active military service). If the child is enrolled in continuing education at 18 (high school, vocational training, or at least 12 semester hours of college with grades sufficient to re-enroll), support continues under RSMo §452.340.5 until program completion or the 21st birthday, whichever comes first — one of the few explicit college-support provisions among US states.