New Hampshire child support calculator (2026 guidelines)
New Hampshire guidelines effective April 1, 2026. Change state
For 2 children, with Parent A earning $60,000 and Parent B $40,000, New Hampshire's guideline amount is $1,152 a month (Parent A pays Parent B).
New Hampshire uses the income shares model; its current guidelines took effect April 1, 2026.
This is the guideline amount, not a court order.
Calculate your New Hampshire guideline amount
Guideline child support
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New Hampshire child support at a glance
| Children | $30,000 | $50,000 | $75,000 | $100,000 |
|---|---|---|---|---|
| 1 child | $461 | $715 | $1,024 | $1,256 |
| 2 children | $637 | $996 | $1,391 | $1,724 |
| 3 children | $763 | $1,196 | $1,683 | $2,065 |
| 4 children | $771 | $1,280 | $1,805 | $2,225 |
| 5 children | $771 | $1,280 | $1,805 | $2,225 |
How New Hampshire calculates child support
New Hampshire applies a percentage to the parents' combined net income: from 25.6% down to 19% for one child as income rises, and from 45% down to 33.5% for four or more children. The state's table builds the net income in, so you enter gross income. Each parent is responsible for their share of the table amount, and the parent the children don't live with pays theirs.
Gross income from almost all sources counts, including alimony received. Support paid under other orders, alimony paid, half of self-employment tax, mandatory retirement contributions and state income tax are deducted. The table converts combined income to net income using the federal withholding for a single person claiming two allowances, plus Social Security and Medicare.
New Hampshire has no parenting-time formula. With approximately equal parenting time, substantially similar incomes and costs shared equally, the law presumes no support is owed; otherwise the parenting schedule is a reason the court may adjust the amount. This estimate shows the worksheet amount.
The paying parent keeps a self-support reserve of $1,729 a month. Support can't take their adjusted income below it, but it is never less than the minimum order of $50 a month.
Work-related child care and the cost of adding the children to health coverage are deducted from the income of the parent who pays them. Each parent's presumptive reasonable medical support obligation, 4% of gross income, is shown on the worksheet but not added to the amount.
Court-ordered support a parent actually pays for other children or adults is deducted from their income. Other children living with a parent are a reason the court may adjust the amount, not a deduction.
The printed table's last row starts at $31,110 of combined income a month. Above that this estimate continues the table's own method with the top percentages, as the state's calculator does; with significantly high income the court may adjust the amount.
Income shares are rounded to four decimal places, each parent's obligation to the cent and the final amount to the nearest dollar.
Parenting time in New Hampshire
New Hampshire's guidelines don't adjust for parenting time; courts may deviate. New Hampshire has no parenting-time formula. With approximately equal parenting time, substantially similar incomes and costs shared equally, the law presumes no support is owed; otherwise the parenting schedule is a reason the court may adjust the amount. This estimate shows the worksheet amount.
Low and high incomes in New Hampshire
For 2 children with Parent B earning $40,000, the guideline amount is about $50 a month when Parent A earns $20,000 a year and about $3,902 a month when Parent A earns $250,000.
The paying parent keeps a self-support reserve of $1,729 a month. Support can't take their adjusted income below it, but it is never less than the minimum order of $50 a month.
The printed table's last row starts at $31,110 of combined income a month. Above that this estimate continues the table's own method with the top percentages, as the state's calculator does; with significantly high income the court may adjust the amount.
Child support by number of children in New Hampshire
- 1 child$833 a month
- 2 children$1,152 a month
- 3 children$1,389 a month
- 4 children$1,488 a month
- 5 children$1,488 a month
Parent A earns $60,000, Parent B $40,000; the children live mostly with Parent B.
Official sources and verification
- Law: N.H. Rev. Stat. Ann. ch. 458-C (RSA 458-C:1 to 458-C:7)
- New Hampshire child support guidelines
- Child Support Guidelines Worksheet (DCSS 650)
- Official New Hampshire child support calculator
- New Hampshire DHHS Bureau of Child Support Services
- Changing a New Hampshire child support order
Guidelines effective April 1, 2026. Verified against the official New Hampshire sources on October 7, 2026. How we calculate →
Frequently asked questions
How is child support calculated in New Hampshire?
New Hampshire applies a percentage to the parents' combined net income: from 25.6% down to 19% for one child as income rises, and from 45% down to 33.5% for four or more children. The state's table builds the net income in, so you enter gross income. Each parent is responsible for their share of the table amount, and the parent the children don't live with pays theirs. Gross income from almost all sources counts, including alimony received. Support paid under other orders, alimony paid, half of self-employment tax, mandatory retirement contributions and state income tax are deducted. The table converts combined income to net income using the federal withholding for a single person claiming two allowances, plus Social Security and Medicare.
What is the child support for one child in New Hampshire on $50,000?
If Parent A earns $50,000 a year, Parent B earns $40,000 and the child lives mostly with Parent B, New Hampshire's guideline amount for one child is about $715 a month (Parent A pays Parent B). Courts can deviate from the guideline amount.
Does 50/50 custody mean no child support in New Hampshire?
Not necessarily. With about equal parenting time, 2 children, Parent A earning $60,000 and Parent B $40,000, the guideline amount is about $1,152 a month (Parent A pays Parent B). New Hampshire has no parenting-time formula. With approximately equal parenting time, substantially similar incomes and costs shared equally, the law presumes no support is owed; otherwise the parenting schedule is a reason the court may adjust the amount. This estimate shows the worksheet amount.
What is the minimum child support in New Hampshire?
The paying parent keeps a self-support reserve of $1,729 a month. Support can't take their adjusted income below it, but it is never less than the minimum order of $50 a month.
When does child support end in New Hampshire?
Under RSA 461-A:14, IV, New Hampshire child support continues until the child turns 18, marries, joins the armed services or is emancipated by court order. A child still in high school full time at 18 is supported until graduation or two months after turning 19, whichever comes first; support, including educational support, then ends without further court action. We didn't locate an official source on support for college or for a disabled adult child.