New Jersey Child Support Calculator
Program Statistics
Source: OCSS FY 2024 Preliminary Report · Preliminary data
Annual Collections
$870 Million
distributed FY 2024
Children Served
295,543
enrolled in IV-D cases
Collection Rate
65.8%
of current support due▲ 0.5pp above the national average
Arrears Outstanding
$2.8B
cumulative unpaid support
Collected via Wage Withholding
83%
of collections via income withholding orders
Program Cost-Effectiveness
$3.13 per $1 spent
National avg: $4.24
How New Jersey calculates child support
Income Shares ModelNew Jersey uses an income shares model under NJ Court Rule 5:6A. Both parents' net after-tax weekly incomes are combined, and the Appendix IX-F schedule determines the total cost of raising the children. Each parent pays proportionally to their share of combined net income. When the non-custodial parent has 104 or more overnights per year, the Shared Parenting Worksheet (Appendix IX-D) applies — a separate calculation that decomposes costs into controlled, variable, and add-on categories and nets the two-way obligations.
Key inputs
- Gross weekly income of each parent
- Number of children
- Overnights per year with the non-custodial parent
- Monthly work-related childcare costs
- Monthly health insurance premium for the children
- Alimony paid or received
What courts can adjust
Guideline amounts are a starting point, not a ceiling. A judge can deviate upward or downward based on the child's specific needs, a parent's financial circumstances, extraordinary expenses, or other factors the court finds relevant. Either parent can ask the court to consider a deviation.
Based on NJ Court Rule 5:6A, Appendix IX-F (effective September 1, 2025)
Frequently Asked Questions
# New Jersey Child Support — Frequently Asked Questions
> **Based on New Jersey guidelines effective September 1, 2025. Laws change — verify with current statute (N.J. Court Rule 5:6A, Appendices IX-A through IX-H) before relying on any information here.** ---
1. How is child support calculated in New Jersey?
New Jersey uses the **Income Shares Model**, which is based on the idea that a child should receive the same share of each parent's income that they would have received if the family had stayed together. Both parents' incomes are combined, and the total support obligation is looked up on a state schedule (Appendix IX-F). That obligation is then split between the parents in proportion to their respective incomes. The parent who spends less time with the child (the Parent of Alternate Residence, or PAR) pays their share to the other parent. The calculation is done in **weekly dollars** and then converted to a monthly amount by multiplying by 4.3. For a situation-specific answer, consult a family law attorney for advice. ---
2. What income is included in the calculation?
New Jersey uses a very broad definition of income. It includes wages, salary, bonuses, overtime, tips, commissions, self-employment income, rental income, interest, dividends, alimony received, pension distributions, Social Security disability benefits, VA benefits, workers' compensation, unemployment compensation, and even net gambling winnings and unreported cash income. What is **not** counted includes means-tested public benefits like SNAP and SSI, income from the children themselves (unless it is substantial or professional), and the income of a new spouse or partner. For a situation-specific answer, consult a family law attorney for advice. ---
3. How does parenting time affect child support?
Parenting time has a significant effect on the amount. There are two separate calculation worksheets: - **Sole Parenting Worksheet (Appendix IX-C):** Used when the PAR has fewer than 104 overnights per year (less than 28%). The PAR gets a small credit for variable expenses during their parenting time. - **Shared Parenting Worksheet (Appendix IX-D):** Used when the PAR has 104 or more overnights per year (28% or more). This worksheet accounts for the fact that both parents are maintaining separate homes for the child, and it significantly reduces the PAR's payment. The **104-overnight threshold** is one of the most contested issues in New Jersey child support. Going from 103 to 104 overnights can reduce monthly support by $200 or more. If overnights are disputed, the stakes are high. For a situation-specific answer, consult a family law attorney for advice. ---
4. Is there a minimum or maximum child support amount?
**Minimum:** The absolute floor is $5 per week ($21.50/month). If the paying parent's income is very low, support may be reduced below the standard formula amount to preserve their minimum living standard — but it cannot go below $5/week unless the court makes specific findings. **Maximum:** The guidelines apply to combined net incomes up to **$3,600 per week** (about $187,200 per year). Above that cap, the court adds a supplemental award based on the children's actual needs, the parents' lifestyles, and other factors — there is no formula above the cap. For a situation-specific answer, consult a family law attorney for advice. ---
5. What are "add-ons" and how are they split between parents?
Add-ons are additional child-related expenses that are added on top of the basic support amount. In New Jersey, three categories qualify: - **Health insurance:** The child-only portion of the premium. The paying parent gets a direct credit. Premiums exceeding 5% of the paying parent's gross income are considered unreasonable. - **Work-related childcare:** Costs necessary for a parent to work or attend school, reduced by federal and NJ tax credits. - **Unreimbursed medical expenses:** Recurring, predictable out-of-pocket medical costs exceeding $250 per child per year. All add-ons are split between the parents in proportion to their incomes — the same percentage used for the basic support amount. For a situation-specific answer, consult a family law attorney for advice. ---
6. Can child support be modified?
Yes. Either parent can request a modification if there has been a **substantial change in circumstances** — typically defined as a 20% change in either parent's income, or a significant change in parenting time. Modifications cannot be requested more often than every three years unless there is a substantial change. **Important:** Modifications can only go back to the **date you filed your motion** — not the date circumstances actually changed. New Jersey also has a strict **45-day rule**: if you send written notice of changed circumstances but do not file your motion within 45 days, you lose the right to make the modification retroactive to the notice date. Act quickly. For a situation-specific answer, consult a family law attorney for advice. ---
7. When does child support end in New Jersey?
Basic child support ends when a child turns **19**. This is older than most states (which use 18 as the cutoff). Support may continue beyond age 19 if: - The child is attending post-secondary education (college, trade school) — up to age 23, but a **continuation request must be filed before the child turns 19**. - The child has a severe mental or physical incapacity that prevents self-support. New Jersey is one of the only states in the country that can require divorced parents to contribute to college tuition and expenses. This is handled through a separate legal process — not the basic support calculation — and courts apply a 12-factor test (the *Newburgh* factors) to decide whether and how much each parent must contribute. For a situation-specific answer, consult a family law attorney for advice. ---
8. What happens if a parent's income is very low?
New Jersey's guidelines include a **Self-Support Reserve** to prevent the paying parent from being reduced to poverty. The SSR is $451/week (2025). If the standard support calculation would leave the paying parent below this threshold, the payment is automatically reduced to preserve a minimum living standard. The minimum payment under these circumstances is $5/week ($21.50/month). The reduction only applies if the receiving parent earns above $301/week — if both parents have very low incomes, the court has broad discretion. If income has been reduced voluntarily (by leaving a job, reducing hours, or underearning compared to your qualifications), the court may **impute income** — meaning it assigns you a hypothetical income based on what you could earn — and calculate support as if you were earning that amount. For a situation-specific answer, consult a family law attorney for advice. ---
9. What is self-employment income and why does it matter?
If you or the other parent owns a business or works as a contractor, gig worker, or freelancer, New Jersey requires a more detailed income calculation. Self-employment income is counted as gross receipts minus "ordinary and necessary" business expenses — but not all business deductions claimed on a tax return are allowed by NJ guidelines. Specifically excluded from allowable deductions are: accelerated depreciation, first-year bonus depreciation, home offices, most entertainment expenses, and any expense the court finds inappropriate or inflated. Because self-employment income is harder to verify and easier to manipulate, courts closely scrutinize Schedule C filings, bank statements, and business records in these cases. The standard IX-H tax table cannot be used for self-employed parents — actual tax brackets must be applied instead. For a situation-specific answer, consult a family law attorney for advice. ---
10. Does this calculator give me the exact amount the court will order?
No. This calculator produces an estimate based on the published New Jersey child support guidelines. The actual court-ordered amount may differ because: - Courts can deviate upward or downward from the guideline amount based on statutory factors (special needs, private school, travel costs, financial hardship, extraordinary parenting time expenses, and others) - The "over age 12" upward adjustment (14.9%) applies at court discretion - Split custody (where different children live primarily with different parents) requires a more complex two-worksheet calculation - The other-dependent deduction requires a separate worksheet and averaging process - High-income cases require a supplemental award analysis with no fixed formula - Imputed income for voluntarily underemployed parents requires judicial fact-finding This calculator also does not account for college expense orders, which are entirely separate from basic child support in New Jersey. For a situation-specific answer, consult a family law attorney for advice.
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