The number of children changes the amount in New Jersey's guidelines.
Count only the children of this relationship. Example: 2.
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How child support is calculated in New Jersey
New Jersey does not leave child support to argument. It is set by the New Jersey Child Support Guidelines, adopted as Appendix IX to the Court Rules and applied under R. 5:6A. A judge starts from the number the Guidelines produce, and a figure calculated that way is presumed correct — a court can depart from it, but only by saying on the record why the Guidelines figure would be unjust or inappropriate in that particular case.
It is built on both incomes, not one
The Guidelines use an income-shares approach: they estimate what the two of you would have spent on the children in one household, and then divide that between you in proportion to your incomes. That is why a calculation cannot be done from one parent's pay alone, and why the first thing any worksheet asks for is both parents' income.
Two worksheets, and which one applies depends on overnights
Appendix IX-C is the sole-parenting worksheet. Appendix IX-D is the shared-parenting worksheet, used when the children spend enough overnights with the other parent to change the arithmetic. The threshold, and the schedule of award amounts that both worksheets draw from (Appendix IX-F), are published by the Judiciary — we link them below rather than restating numbers that get revised.
What goes into the worksheet
Beyond both incomes and the number of children, the worksheets account for things that genuinely change what the children cost, including:
- the parenting-time schedule, counted in overnights
- the cost of health insurance covering the children
- work-related childcare
- other legal dependents either parent supports
- alimony paid or received between you
Those are facts, not judgment calls, which is why software can collect them. What number is fair in your circumstances, whether a deviation should be argued for, and how an unusual income should be characterised are not — those belong to a New Jersey family lawyer.
Why this page does not yet show you a dollar figure
The tool above walks you through the inputs and keeps your answers in the browser, but it deliberately stops short of printing an amount. The Appendix IX-F schedule has not yet been checked against the current official tables and signed off by a New Jersey family-law professional, and until it has, publishing a number would mean asking you to rely on arithmetic nobody qualified has verified. A wrong support figure is not a rounding error — it is the thing your children live on. We would rather show you the shape of the calculation and say plainly that the last step is pending than invent confidence we have not earned.
Common questions
Is the New Jersey child support calculation binding on the judge?
The Guidelines figure is presumed correct, not absolute. Under R. 5:6A a court may deviate from it, but must state its reasons for finding that the Guidelines amount would be unjust or inappropriate in that case.
Do both parents' incomes matter, or only the paying parent's?
Both. New Jersey uses an income-shares model: the Guidelines estimate what the children's support would have cost in an intact household and apportion it between the parents according to their respective incomes.
Does parenting time change the amount of child support in New Jersey?
Yes. New Jersey has two worksheets — Appendix IX-C for sole parenting and Appendix IX-D for shared parenting — and which applies depends on the number of overnights the children spend with each parent.
Can we agree on our own child support number instead?
Parents can propose an amount, but child support belongs to the child, and a New Jersey court reviews any agreed figure against the Guidelines before approving it. An agreement that departs from the Guidelines needs an explanation the court accepts.
Does Clear Parting Docs calculate my child support amount?
Not yet. The tool collects the inputs the New Jersey worksheets use, but it does not publish a dollar figure until the Appendix IX-F schedule has been verified against the current official tables by a New Jersey family-law professional. Use the Judiciary's own published Guidelines, or ask a New Jersey attorney, for a figure you intend to rely on.
Where this comes from
- New Jersey Child Support Guidelines — Appendix IX to the Rules of Court (njcourts.gov)
- New Jersey Judiciary — child support self-help
Related
- Divorcing with children in New Jersey, when you both agree
- Build a New Jersey parenting plan
- The parenting class New Jersey requires before your divorce is final
Clear Parting Docs is not a law firm and none of this is legal advice about your case. It is general information about New Jersey practice, with its sources named above so you can check it. Whether any of it applies to your marriage is a question for a New Jersey attorney.