New Hampshire Child Support Calculator (2026)
In New Hampshire, child support is based on both parents' combined income and the number of children. The total is split between you based on how much each parent earns, and parenting time can change the amount. Use the free calculator below for an instant estimate.
Source: NH Guidelines (RSA 458-C)
Calculate Your New Hampshire Child Support
Free estimate — official New Hampshire guidelines
Your income after taxes and required deductions
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). This assumes the other parent earns approximately $36,000/year. Actual amounts depend on both parents' incomes, custody time, and add-on expenses (child care, health insurance).
$1,000/week ($52,000/year): approximately $612/month for 1 child.
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. Compare all states →
How Child Support Is Calculated in New Hampshire
Factors That Affect Child Support in New Hampshire
Technical details and legal basis
New Hampshire uses the Income Shares model (NH Guidelines (RSA 458-C)) to calculate child support. This model combines both parents' incomes to determine the total obligation, then divides it proportionally based on each parent's share.
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 Calculation
Scenario: Parent A earns $5,000/month, Parent B earns $3,000/month, 2 children.
Step 1: Combined income: $8,000
Step 2: Parent A's share: $5,000 / $8,000 = 62.5%
Step 3: Look up basic obligation for $8,000 combined and 2 children.
Step 4: Multiply by Parent A's share (62.5%).
Adjustments for health insurance, child care, and parenting time may apply.
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.
New Hampshire Child Support FAQ
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
Uses the official NH Guidelines (RSA 458-C) (2025 guidelines). Last verified: 2026-05-30.
Disclaimer: Estimates only, not legal advice. Actual amounts are set by New Hampshire courts. Full disclaimer.
Methodology: Income Shares model per NH Guidelines (RSA 458-C).