New Hampshire Child Support Calculator 2026
New Hampshire reads the basic child support amount from a state schedule, which this page does not reproduce. Enter both parents' incomes to see each parent's share of combined income, then use the official New Hampshire source linked below for the schedule amount. Calculated privately in your browser.
Estimate only — the court or the child support agency sets the order. Official source: New Hampshire child support guidelines and calculator.
New Hampshire uses the income shares model for child support: a basic obligation is read from the state schedule using both parents' combined income and the number of children, then divided by each parent's share of that income. This page calculates the shares; the schedule amount comes from the official New Hampshire source.
How New Hampshire Child Support Is Calculated
The National Conference of State Legislatures lists New Hampshire among the income shares states. The calculation has four steps: add both parents' incomes; find the basic obligation for that combined income and number of children in the New Hampshire schedule; divide it between the parents in proportion to their incomes; then apply the worksheet's adjustments.
New Hampshire starts from each parent's net income as the state defines it, which is not the same as take-home pay on a payslip; the worksheet lists the deductions allowed.
| Step | On this page? |
|---|---|
| Each parent's share of combined income | Yes — exact arithmetic |
| Basic obligation from the New Hampshire schedule | No — read it from the official source |
| Health insurance and childcare split | No — handled on the official worksheet |
| Parenting-time adjustment | No — made on the worksheet or by the court |
| Low-income and high-income rules | No — set by the New Hampshire guidelines |
Worked Example: New Hampshire Income Shares
With the default figures, the paying parent has $5,000 a month and the other parent $3,000. Combined income is $8,000, so the paying parent's share is 62.5% and the other parent's is 37.5%. To finish the calculation you would look up $8,000 of combined income and 2 children in the New Hampshire schedule and apply those shares.
Insurance, Childcare and Parenting Time in New Hampshire
New Hampshire does not add these costs on top. What a parent actually pays for work-related childcare and for the children's medical support is subtracted from that parent's income before the guideline percentage is applied (RSA 458-C:2), so this page does not estimate an add-on.
Any adjustment for parenting time (overnights) is made on the state worksheet or by the court and is not estimated here.
Estimate Only: Who Sets the New Hampshire Order
This page gives an estimate only — the court or the state child support agency sets the order, and either can depart from the guideline where the law allows. Before relying on any figure, run the same figures through the New Hampshire child support guidelines and calculator.
If your income, the parenting schedule or the children's needs change, ask the court or the agency to review the order, and keep paying the ordered amount until it is changed. Last updated: October 2026.
Frequently Asked Questions
How is child support calculated in New Hampshire?
New Hampshire uses the income shares model. A basic obligation is read from the New Hampshire schedule using both parents' combined income and the number of children, then divided between the parents in proportion to their incomes. Insurance, childcare and parenting time are handled on the state worksheet, and a court or the child support agency sets the final amount.
Does this calculator give the New Hampshire guideline amount?
No. It calculates each parent's share of combined income. The basic obligation comes from the New Hampshire schedule, which this page does not reproduce. Use the official New Hampshire source linked on the page for the schedule amount.
What income does New Hampshire use for child support?
New Hampshire works from each parent's net income as the state defines it, which is not the same as take-home pay. The official worksheet lists the deductions allowed; enter that net monthly figure for both parents.
How are health insurance and childcare handled in New Hampshire?
New Hampshire does not add these costs on top. What a parent actually pays for work-related childcare and for the children's medical support is subtracted from that parent's income before the guideline percentage is applied (RSA 458-C:2), so this page does not estimate an add-on.
Who decides the final child support amount in New Hampshire?
A court or the state child support agency sets the order. Guideline figures are a starting point, and the decision-maker can depart from them where the law allows. An online estimate, including this one, is not an order.