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Estimate child support using the Income Shares Model based on both parents' incomes.
Child support is a court-ordered financial payment from a non-custodial parent to the custodial parent. Most US states use the Income Shares Model — dividing a combined support obligation proportionally by each parent's income.
Educational Estimate Only: Child support is determined by courts using state-specific guidelines. This estimate uses the Income Shares Model for educational purposes. Consult a licensed family law attorney for your specific situation.
Estimated Monthly Child Support
Combined monthly income — Income Shares Model (approximate)
| Combined Income | 1 Child | 2 Children | 3 Children |
|---|---|---|---|
| $3,000 | $450 | $660 | $755 |
| $5,000 | $700 | $1010 | $1155 |
| $7,000 | $905 | $1305 | $1495 |
| $10,000 | $1150 | $1650 | $1890 |
Approximate figures based on Income Shares Model guidelines. Actual amounts vary by state.
Formula
Each Parent's Share = (Parent's Income ÷ Combined Income) × Basic Support ObligationParent's Income = Individual parent's gross monthly income
Combined Income = Sum of both parents' gross monthly incomes
Basic Support Obligation = Total child support from state guidelines table based on combined income and number of children
Worked Example
Parent A earns $5,000/mo, Parent B earns $3,000/mo, 1 child
Did you know? The U.S. Census Bureau reports that only 43.5% of custodial parents receive the full child support amount they are owed. In 2021, $32.6 billion in child support was owed to custodial families across the US, with $21.3 billion actually received (source: U.S. Census Bureau, Custodial Mothers and Fathers report, 2023).
Sources
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