How support is calculated, modified, and enforced — from guidelines to college expenses.
New Hampshire alimony uses 23% income formula with 50% marriage duration cap. Child support follows Income Shares model. Complete 2026 comparison guide.
New Hampshire parents share extracurricular costs proportionally to income under RSA 458-C:5. Filing fee: $282 with children. Complete 2026 guide with examples.
Learn how to pay child support in New Hampshire through wage withholding, online portal, direct deposit, or check. Filing fee: $282 with children.
Child support is not taxable in New Hampshire. Payers cannot deduct it, recipients owe zero income tax. Full 2026 federal and NH rules explained.
Child support in New Hampshire ends at age 18, or age 19 if the child is still in high school. Learn termination rules under RSA 461-A:14, emancipation, and exceptions.
Use the New Hampshire child support calculator to estimate payments under RSA 458-C. NH uses income shares model with 25.6% of net income for one child.