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How is child support calculated in New Jersey?

On Behalf of | May 30, 2025 | family law |

Child support in New Jersey is based on a formula that aims to ensure that children receive fair financial support from both parents. The calculation uses statewide guidelines that take into account each parent’s income, parenting time, and certain expenses.

While the process follows a set structure, the final amount of child support ordered can vary depending on the details of each case. The goal is to address the needs of the child in a way that reflects the financial situation of both parents. Here’s a brief look at how child support is determined.

Income shares model

New Jersey uses the income shares model to calculate child support. This method considers both parents’ incomes to determine the amount of support. Each parent is then responsible for a share based on their percentage of the combined income. Net income is used, which means gross income after taxes and other deductions. If a parent is earning less than they reasonably could, the court may estimate a higher income.

Parenting time and custody

The number of nights the child spends with each parent affects the support amount. If the non-custodial parent has the child for at least 28 percent of overnights each year (about 104 nights), the calculation may be adjusted to reflect shared responsibilities.

Additional expenses

Some costs are added on top of basic support. These may include child care, health insurance and unreimbursed medical expenses. These are usually split between the parents based on their income.

New Jersey’s Child Support Guidelines include worksheets to help calculate a fair amount. Online tools can offer estimates, but the final decision rests with the court. If you are unhappy about how much child support you are paying or receiving, you should seek legal guidance.