New Hampshire Child Support Calculator
Estimate child support under N.H. Rev. Stat. Ann. § 458-C. Calculate baseline support, parenting time overnights, health insurance credits, and work-related childcare costs.
1. Enter Case Information
NH RulesEstimated Child Support
NH EstimateUnderstanding New Hampshire Child Support Guidelines
New Hampshire applies an Income Shares model under RSA 458-C. Net monthly income of both parents is combined, applying statutory guideline percentages: 25% for 1 child, 33% for 2, 39% for 3, 43% for 4+.
Shared Custody & Overnights in New Hampshire
Equal or approximately equal parenting time does not create an automatic reduction in New Hampshire. A deviation from RSA 458-C requires showing that equal custody substantially decreases the recipient's costs.
Calculate Your Exact Overnights →Official Court Worksheets & Forms
Family court filings in New Hampshire require completing: NH Department of Health and Human Services Child Support Worksheet. Review official forms before filing.
View State Worksheets Directory →Worked Calculation Example: Standard New Hampshire Scenario
Here is a realistic line-by-line computation for two parents in New Hampshire raising 2 children:
| Guideline Worksheet Line Item | Parent A (Paying) | Parent B (Receiving) | Combined / Order Total |
|---|---|---|---|
| Monthly Guideline Income | $5300 | $3700 | $9000 |
| Parental Income Proportion | 59% | 41% | 100% |
| Basic Child Support Schedule Obligation | - | - | $1510 /mo |
| Work-Related Childcare Cost | - | - | +$410 /mo |
| Health & Dental Insurance Premium | - | - | +$220 /mo |
| Total Combined Child Financial Needs | - | - | $2140 /mo |
| Final Estimated Monthly Support Order | Paid by Parent A to Parent B | $1170 /month | |
Frequently Asked Questions in New Hampshire
Key legal questions regarding child support establishment, modifications, and enforcement in New Hampshire.
Does New Hampshire reduce child support for 50/50 custody automatically?
No. Under RSA 458-C:5, equal parenting time is a discretionary ground for deviation, requiring evidence that shared custody significantly reduces the other parent's expenses.
What deductions are allowed from gross income in New Hampshire?
New Hampshire allows deductions for state/federal taxes, FICA/Medicare, mandatory retirement contributions, and preexisting child support orders.
What is New Hampshire's self-support reserve?
New Hampshire protects low-income obligors with a self-support reserve equal to 115% of the federal poverty guideline for a single person.
Next Useful Steps for Your Case
Take the next step in preparing your family financial documentation:
Convert Irregular Income
Standardize hourly wages, seasonal overtime, or commissions into monthly gross figures.
Launch Income Tool →Explore 50/50 Custody
See how equal time sharing and reciprocal guidelines impact final transfer payments.
50/50 Custody Tool →Download Official Worksheets
Find the exact PDF court forms and financial affidavits required by your court clerk.
Court Worksheets Directory →