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Rough monthly child support estimate from both parents’ incomes, number of children, and custody time with Parent A. Not legal advice.
Quick answer: Child Support Calculator
Income-shares style estimate from both parents’ incomes, children count, and custody % - not a court order.
Example: Two kids, $6k vs $4k monthly incomes, 70% time with lower earner → you see who likely pays and a rounded monthly band before local rules adjust it.
Calculations follow the documented formula on this page; rounding and input units can change the last digit-treat outputs as educational estimates unless you reconcile with source systems.
* This is an estimate. Actual amounts may vary slightly based on input assumptions.
The engine blends combined obligation ideas with who pays based on income share and overnight-time style sliders. Real guidelines differ by state, worksheet line items, and deviations.
Rough monthly child support estimate from both parents’ incomes, number of children, and custody time with Parent A. Not legal advice.
Inputs on this page: Parent A gross monthly income ($), Parent B gross monthly income ($), Number of children, Custody / care time with Parent A (%). Assumptions stay visible so you can reproduce the figure elsewhere.
Long-form walkthroughs that pair well with this calculator. When you need narrative context beyond the live fields, start here and return to the tool to plug in your own numbers.
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Read guide →People who care about child support calculator use Child Support Calculator as a planning sandbox: Always verify the official state worksheet PDF your judge expects.
Continue in the Legal category hub, the Utility tools collection, or the glossary. Related calculators in this session: Settlement Calculator, Legal Fee Estimator, Budget Planner Monthly USA, Alimony Estimator, Accident Compensation Calculator, Privacy Policy Generator.
The Formula
Simplified income-shares obligation × payor income share × parenting-time adjustment| This tool | Simplified income-shares obligation × payor income share × parenting-time adjustment |
|---|---|
| Related intent: child support calculator | See paired tools for child support calculator-each page documents its own core relationship next to the live form. |
| Related intent: child support estimate | See paired tools for child support estimate-each page documents its own core relationship next to the live form. |
Core relationship for Child Support Calculator:
Simplified income-shares obligation × payor income share × parenting-time adjustment
Worked check: Two kids, $6k vs $4k monthly incomes, 70% time with lower earner → you see who likely pays and a rounded monthly band before local rules adjust it.
Keep the same assumptions and open a neighbor calculator when your question branches: Settlement Calculator, Legal Fee Estimator, Budget Planner Monthly USA, Alimony Estimator. Each page documents its own formula beside the fields.
Learning links: Methodology · Editorial policy · Glossary
Two kids, $6k vs $4k monthly incomes, 70% time with lower earner → you see who likely pays and a rounded monthly band before local rules adjust it.
Re-enter the same numbers in the calculator above to confirm the page math matches the interactive result.
People who care about child support calculator use Child Support Calculator as a planning sandbox: Always verify the official state worksheet PDF your judge expects.
Instant response
Run Child Support Calculator in the browser and read the breakdown beside the form.
Transparent formula
The formula and worked example on this page match what the calculator uses.
Privacy friendly
No account required; inputs stay in your session unless you choose to share them.
Cross-device ready
Layout works on mobile, tablet, and desktop for the same field labels.
Official references for context. Calculator outputs are planning estimates—confirm material decisions with the primary authority or a qualified professional. See our methodology and editorial policy.
Reviewed July 18, 2026 · Content stamp 2026-07-18
Click a question to expand the answer.
Yes, the Child Support Calculator is completely free with no hidden limits.
Yes. All tools are optimized for desktop, tablet, and mobile devices.
No. Real child support uses state-specific guidelines, deductions, and parenting-time rules.
Income-shares style estimate from both parents’ incomes, children count, and custody % - not a court order.
Two kids, $6k vs $4k monthly incomes, 70% time with lower earner → you see who likely pays and a rounded monthly band before local rules adjust it.
Always verify the official state worksheet PDF your judge expects. Add healthcare, childcare, and tax quirks - the simplified model skips many add-ons. Print results with inputs if you brief an attorney; never rely on this in filings alone.
No. Use it as a transparent planning check, then verify critical outcomes in your own systems or with a qualified professional when stakes are high.
Compare units, rounding, compounding, and tax basis side by side. This page documents: Simplified income-shares obligation × payor income share × parenting-time adjustment
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Reviewed by Toollabz Editorial
Product editor | Last reviewed July 18, 2026
See methodology and editorial policy.