Child Support Modification Calculator
Calculate revised child support based on changed income circumstances.
Legal Disclaimer
This calculator provides general estimates only and does not constitute legal advice. Laws, regulations, and court procedures vary significantly by jurisdiction. Consult a licensed attorney in your area for advice specific to your situation.
Inputs
Results
New Monthly Support
$1,250.00
≈ 10 pairs of sneakers
Change Amount
$50.00
≈ 10 cups of coffee
How to Use This Calculator
- Enter Current Monthly Support and the original income levels when support was set.
- Input New Payer Income and New Recipient Income reflecting current circumstances.
- Set Number of Children covered by the order.
- Review New Monthly Support and Change Amount.
- A substantial change (typically 15%+ change in support amount) is usually required for modification.
- Consult a family law attorney — courts require a formal motion to modify existing orders.
How the result changes with New Payer Income
| New Payer Income | New Monthly Support | Change Amount |
|---|---|---|
| $100,000.00 | $2,083.33 | $883.33 |
| $350,000.00 | $7,291.67 | $6,091.67 |
| $650,000.00 | $13,541.67 | $12,341.67 |
| $900,000.00 | $18,750.00 | $17,550.00 |
What each input means
- Current Monthly Support
- Current monthly child support payment.
- Original Payer Income
- Payer's income when support was set.
- New Payer Income
- Payer's current income.
- Original Recipient Income
- Recipient's income when support was set.
- New Recipient Income
- Recipient's current income.
- Number of Children
- Number of children covered by the order.
How this is calculated
Worked example, using the default values
- Identify Input Parameters4 parametersCurrent Monthly Support = 1200, Original Payer Income = 80000, New Payer Income = 60000, Original Recipient Income = 40000 = 6 input(s) provided
- Calculate New Monthly SupportNew Monthly Support1250 = $1,250
- Calculate Change AmountChange Amount50 = $50
- Calculate Change PercentageChange Percentage4.2 = 4.2
- Calculate Meets Modification ThresholdMeets Modification Threshold0 = 0
Engine last updated .
Related Calculators
The questions that sit next to this one — chosen by subject, including calculators filed under a different category.
Child Support Calculator
Estimate child support using the income shares model with parenting time adjustments.
Family LawSpousal Support Calculator
Estimate alimony amount and duration based on income disparity and marriage length.
Family LawChild Support Estimator
Estimate child support payments using the income shares model. This is a rough estimate — actual amounts vary significantly by state and court order.
More in Legal & Professional.