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Child Support in New Jersey

Free calculator, modification rules, arrears interest, and 50/50 custody guide for New Jersey — 2026.

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Child Support Calculator
Estimate payments using New Jersey's Income Shares
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Modification Checker
Does your income change qualify?
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Arrears Calculator
Past-due support with 10% interest
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50/50 Custody Guide
Does equal custody eliminate support?

New Jersey Child Support Facts — 2026

Formula modelIncome Shares
Income basisBoth parents' income
Support ends at age19
Modification threshold20% income change
Arrears interest rate10% per year
Official agencyNew Jersey Child Support Agency ↗
New Jersey uses Income Shares. Courts may order support through college.

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