New Hampshire Child Support Calculator

Free instant estimate based on New Hampshire's Percentage of Income model (RSA §458-C)

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Select a state and enter your monthly gross income to see an estimated child support payment based on net income.

How New Hampshire Calculates Child Support

New Hampshire calculates child support using the Percentage of Income method as defined in RSA §458-C. The obligor parent pays a fixed percentage of their adjusted gross income based on the number of children: 25% for one child, 33% for two, 37% for three, 39% for four, and 41% for five or more children.

New Hampshire is notable for having no statutory income cap and no state income tax on wages. This means the support percentages apply to all of the obligor's adjusted gross income regardless of how high it is. A self-support reserve of $1,210 per month (2024) protects low-income obligors by ensuring they retain enough for basic living needs.

Both parents' incomes are considered for adjustments, and shared parenting adjustments are available when both parents have significant parenting time. The minimum support order is $50 per month unless the court finds good cause for a lower amount.

Frequently Asked Questions

How does New Hampshire calculate child support under the Percentage of Income method?
New Hampshire uses the Percentage of Income model under RSA §458-C. The obligor parent pays a percentage of their adjusted gross income: 25% for 1 child, 33% for 2, 37% for 3, 39% for 4, and 41% for 5 or more children. There is no statutory income cap.
Is there an income cap for New Hampshire child support?
No. New Hampshire has no statutory income cap. The support percentages apply to all of the obligor's adjusted gross income, regardless of how high it is. This is unusual among states that use the Percentage of Income model.
Does New Hampshire have state income tax?
No. New Hampshire has no state income tax on wages and salaries. This means more of a parent's gross income is available for child support calculations compared to states with income taxes.
What is the self-support reserve in New Hampshire?
New Hampshire's self-support reserve ensures the obligor retains at least $1,210 per month (2024) for their own basic needs. If the calculated support would reduce income below this threshold, the obligation is adjusted downward.
Can New Hampshire child support be modified?
Yes. Either parent can request a modification if there has been a substantial change in circumstances since the last order, such as a significant change in income, a change in custody, or a change in the child's needs.

Important Legal Disclaimer

The information provided on SupportCalc is for general informational and educational purposes only. Nothing on this website should be taken as legal advice. Child support calculations are estimates based on publicly available state guidelines and may not reflect the exact amount ordered by a court. Every case is unique, and many factors can affect the final support order. Please consult with a qualified family law attorney in your jurisdiction for advice specific to your situation.