New Jersey child support guidelines
New Jersey uses an income-shares guideline set out in Court Rule 5:6A — support is based on both parents’ incomes. This page explains the rules and links New Jersey’s official QuickCalc; it doesn’t compute your amount.
How the New Jersey formula works
The guideline (Rule 5:6A, Appendix IX) works in steps:
- Combine both parents’ incomes;
- Find the basic obligation on the awards schedule for that combined income and the number of children (revised effective September 1, 2025);
- Choose the worksheet — Sole Parenting or Shared Parenting, based on overnights;
- Allocate by each parent’s income share and add health insurance and work-related childcare.
The 28% overnight rule and the self-support reserve
Two mechanics move New Jersey numbers the most. The 28%-of-overnights threshold (about two nights a week) decides whether the Sole Parenting or the Shared Parenting worksheet applies — the shared worksheet credits the alternate-residence parent for what they spend directly, so a schedule that crosses 28% can change the order. And a self-support reserve — 150% of the federal poverty guideline (about $451 a week in 2025, updated annually) — keeps a low-earning parent above a basic-needs floor rather than owing the full guideline amount.
How long support lasts
New Jersey is unusual on duration: support presumptively runs to age 19, and can be extended on application up to 23 for a full-time student or a child with a disability — well past the 18-or-19 rule in most states. It ends sooner on emancipation (marriage, military service, or full self-support). Income can be imputed to a parent who is voluntarily unemployed or underemployed.
Use the official calculator
The New Jersey Child Support Program publishes the official QuickCalc (linked above). Use it for an estimate; this page only explains the model. The court has final authority over the amount.
For a real case
The guideline figure is presumed correct but can be adjusted when the facts warrant. For advice on your situation, consult a New Jersey family-law attorney.
Reviewed by Aqil Abbas Khan, Founder & Editor of ToolsNexus
This page is general information, not legal advice. Child support in New Jersey is set by New Jersey’s official guidelines, and the amount in any real case is determined by the court or the state child-support agency using the official worksheet — not by this page. Guideline figures, schedules, and adjustments change over time and depend on facts specific to your situation (each parent’s income, parenting time, health-insurance and childcare costs, and other factors a court may consider). Use the official New Jersey calculator for an actual estimate, and consult a licensed family-law attorney in New Jersey for advice about your circumstances. ToolsNexus is not a law firm and does not provide legal representation.
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Frequently asked questions
- How is child support calculated in New Jersey?
- New Jersey uses an income-shares guideline codified in Court Rule 5:6A and its Appendix IX. It combines both parents' incomes, finds the basic obligation on the awards schedule for that income and the number of children, and allocates it by each parent's share. The state provides the QuickCalc estimator; the awards schedule was revised effective September 1, 2025.
- What determines the sole vs. shared-parenting worksheet?
- The threshold is 28% of annual overnights (about two nights a week). If the parent of alternate residence has fewer than 28% of the overnights, the Sole Parenting Worksheet applies; at 28% or more, the Shared Parenting Worksheet applies and credits that parent for direct spending. Crossing that line changes the result, so overnights are worth counting carefully.
- Is there a self-support reserve in New Jersey?
- Yes. A self-support reserve keeps a paying parent above a basic-needs floor — set at 150% of the federal poverty guideline for one person (about $451 a week as of 2025) and updated annually. If the guideline amount would drop the parent below the reserve, the order is reduced accordingly.
- Until what age is support paid in New Jersey?
- New Jersey support presumptively continues until the child turns 19, and can be continued on application up to age 23 for a full-time student or a child with a disability — later than most states. It ends earlier if the child is emancipated (marriage, military service, or full self-support).
- Where do I get an official estimate?
- Use the New Jersey Child Support QuickCalc linked on this page. This page explains the model but does not compute an amount, and it is not legal advice.