New Hampshire Child Support Calculator (2026)
Estimate your child support payments in New Hampshire using our free calculator based on the official NH Guidelines (RSA 458-C). Enter your income details below to get an instant estimate.
New Hampshire Child Support Calculator
Based on New Hampshire's 2024 NH Guidelines (RSA 458-C)
This is an estimate only. See our full disclaimer.
Key Facts: Child Support in New Hampshire
- New Hampshire uses the Income Shares model, basing child support on both parents' combined net income.
- The basic child support obligation for 1 child ranges from approximately $200/month at $1,000 combined net income to $1,690/month at $20,000 combined monthly net income.
- Each parent pays their proportional share of the total obligation based on their percentage of the combined net income.
- Net income is calculated by deducting federal and state taxes, FICA, mandatory retirement contributions, and existing support obligations.
- A parenting time adjustment may apply when the non-custodial parent has the children approximately one-third or more of the time.
Source: NH Guidelines (RSA 458-C) • Last verified: 2026-05-30
How Much Is Child Support in New Hampshire?
If you make $60,000 a year in New Hampshire, child support for 1 child is estimated at $669 per month ($8,028 per year) based on the NH Guidelines (RSA 458-C). This assumes the other parent earns approximately $36,000/year. Actual amounts depend on both parents' incomes, custody arrangements, and additional expenses.
If you make $1,000 a week ($52,000/year) in New Hampshire, child support for 1 child is approximately $612/month.
New Hampshire Child Support Estimates by Income (2026)
| Annual Income | 1 Child | 2 Children | 3 Children |
|---|---|---|---|
| $40,000/yr | $513/mo | $694/mo | $809/mo |
| $50,000/yr | $596/mo | $807/mo | $941/mo |
| $60,000/yr | $669/mo | $906/mo | $1,056/mo |
| $70,000/yr | $732/mo | $991/mo | $1,155/mo |
| $80,000/yr | $788/mo | $1,068/mo | $1,245/mo |
| $100,000/yr | $884/mo | $1,197/mo | $1,396/mo |
| $120,000/yr | $961/mo | $1,302/mo | $1,518/mo |
Estimates assume the other parent earns 60% of your income. Actual amounts vary based on both parents' incomes, custody time, and adjustments. Compare all states →
How Child Support Is Calculated in New Hampshire
New Hampshire uses the Income Shares model to calculate child support obligations. This model combines both parents' incomes to determine the total child support obligation, then divides it proportionally based on each parent's share of the combined income.
Factors That Affect Child Support in New Hampshire
Important Notes for New Hampshire
- New Hampshire uses the Income Shares model, combining both parents' net incomes to determine the total child support obligation.
- Net income is calculated by deducting federal and state taxes, FICA, mandatory retirement contributions, and existing child support obligations from gross income.
- The court may adjust the standard calculation based on factors such as extraordinary medical expenses, special educational needs, or significant disparities in living standards between households.
Example Child Support Calculation in New Hampshire
Scenario: Parent A earns $5,000/month, Parent B earns $3,000/month, 2 children.
Step 1: Combined monthly income: $5,000 + $3,000 = $8,000
Step 2: Parent A's income share: $5,000 / $8,000 = 62.5%
Step 3: Look up basic obligation from the guidelines schedule for $8,000 combined income and 2 children.
Step 4: Multiply the basic obligation by Parent A's share (62.5%) to determine their payment.
Note: Additional adjustments for health insurance, child care, and parenting time may apply.
Frequently Asked Questions About New Hampshire Child Support
How is child support calculated in New Hampshire?
What income is used for New Hampshire child support?
Does shared custody affect child support in New Hampshire?
Can New Hampshire courts deviate from child support guidelines?
How long does child support last in New Hampshire?
About This Calculator
This calculator uses the official NH Guidelines (RSA 458-C) (2024 guidelines) to estimate child support in New Hampshire. Calculations were last verified against the official source on 2026-05-30.
Disclaimer: This calculator provides estimates only and does not constitute legal advice. Actual child support amounts are determined by New Hampshire courts and may differ based on factors not included here. For legal advice, consult a New Hampshire family law attorney.
Our methodology: Based on the Income Shares model as defined in the NH Guidelines (RSA 458-C). Updated for 2026.