New Hampshire Child Support Guidelines

New Hampshire operates under the Income Shares model, one of 42 U.S. states using this framework. For a parent supporting one child, the base guideline applies roughly 19% of income, scaling to 27% for two children and 33% for three. That places New Hampshire at rank #10 of 51 states by single-child base percentage. Unlike capped states, there is no statutory income ceiling — the formula applies to the full reported income before deductions. Median household income across New Hampshire is $88,465 annually, which shapes the real-world dollar obligations families face under these percentages.

On the enforcement side, the New Hampshire child support program manages 41,000 active cases and collected approximately $100 million in the most recent OCSE reporting year. The state's collection rate of 64.8% compares to a national average of 60.6% across reporting states — placing New Hampshire at rank #11 of 51 on collection efficiency, and rank #45 by caseload volume (national average: 285,686 cases per state). Paternity is established in 95.5% of New Hampshire cases, compared to 94.9% nationally — a critical step because child support orders cannot be enforced without legal parentage on record. Orders are in place for 80.3% of the caseload.

Context matters when interpreting these numbers. A higher percentage-of-income figure does not automatically mean higher dollar obligations — the underlying income brackets, deductions, parenting-time adjustments, and self-support reserves vary meaningfully between states. New Hampshire allows a parenting time adjustment, which can materially reduce the base obligation when the non-custodial parent exercises substantial overnight time. Use the official New Hampshire calculator linked below for a binding estimate. Data sources: OCSE FY2022 Annual Report, New Hampshire Revised Statutes, and Census ACS 2022.