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Free New Jersey child support calculator for combined monthly gross income, an illustrative basic obligation from a guideline-style schedule (with interpolation), and pro-rata allocation to estimate the non-custodial payer’s share. Browse legal and compliance calculators for more family-law tools.
Last updated: April 19, 2026
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NJ guidelines use gross income with statutory adjustments (simplified here).
Monthly payment estimate
$1,023.90
Total basic obligation
$1,706.50
Combined gross / mo
$10,000.00
NCP pro-rata
60.00%
CP pro-rata
40.00%
Schedule cap (node)
$35,000.00+
Educational estimate only
Not a substitute for Appendix IX, sole/shared parenting worksheets, or court-approved NJ tools. Use official forms for filings.
Appendix IX style
1–6 children columns
Interpolates between income nodes consistent with table-style extrapolation.
Pro-rata model
NCP pays × (NCP ÷ combined)
Applies each parent’s percentage of combined gross income to the base obligation.
Calibration
Verify with NJ worksheets
Dollar amounts are illustrative; use published schedules for hearings and orders.
Output
Monthly dollars to pay
Shows the payer’s share of the base obligation before add-ons and deviations.
Children count
1 – 6 children
Matches the obligation column for the number of children in the order.
Use case
Intake & screening
Helps you compare scenarios before filing or using Judiciary-approved tools.
For $4,000 custodial and $6,000 non-custodial gross monthly income with two children ($10,000 combined):
Estimated NCP monthly payment
$1,023.90
Basic obligation (2 children)
$1,706.50
Our New Jersey child support calculator applies the income-shares framework used with New Jersey’s guidelines: combine parents’ gross incomes (simplified here), determine a basic monthly child support obligation from an illustrative schedule with interpolation between income points, then allocate that obligation using each parent’s percentage of combined income. The non-custodial parent’s estimated payment is their pro-rata share of the basic obligation. See other family-law calculators for comparison.
Basic obligation = Schedule lookup(combined gross income, # children)NCP payment = Basic obligation × (NCP income ÷ combined income)Combined income is compared to schedule points up to $35,000.00 per month in this tool; higher incomes extrapolate from the top segment.
New Jersey income shares + base obligation (conceptual)
Illustrative result: basic two-child obligation ≈ $1,706.50; NCP payment ≈ $1,023.90 (before deviations and add-ons).
Same $10,000 combined gross: select one child in the calculator for a lower base obligation and proportional payment.
Use New Jersey’s published Appendix IX materials and sole/shared worksheets for court orders and enforcement cases.
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