NH DHHS – Child Support Services

Child Support · New Hampshire · Free

The New Hampshire Division of Child Support Services establishes, enforces, and modifies child support orders statewide, handles paternity establishment, and processes interstate cases. Fathers can open a case, request a modification after a significant income change, or check payment status by calling 800-852-3345 or visiting the Concord office Monday through Friday 8am to 4:30pm. Bring photo ID, the existing order, pay stubs, and birth certificates.

Contact & Details

Address: 129 Pleasant St, Concord, NH 03301

Phone: 800-852-3345

Hours: Mon-Fri 8am-4:30pm

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About Child Support for Fathers

Child support in the United States is administered state-by-state under the Title IV-D federal program, with every state required to operate a child support enforcement agency. These agencies establish paternity, locate non-custodial parents, calculate support obligations, and enforce payments through wage garnishment, tax refund intercepts, license suspension, and other civil enforcement tools. Support amounts are calculated using state-specific guidelines, most based on an income shares or percentage-of-income formula. Fathers paying support can request modifications when their income drops substantially or when circumstances change (job loss, additional children, disability). Fathers owed support can open a case with their state agency free of charge. This directory includes each state's child support agency, online calculators, local enforcement offices, and modification resources.

Child Support in New Hampshire

New Hampshire's Circuit Court Family Division handles all family matters statewide. The Division of Child Support Services operates under DHHS. Manchester, Nashua, Concord, and Dover are the largest cities. 603 Legal Aid is the statewide LSC-funded civil legal aid program, with a strong self-help website for pro se fathers.

More Child Support in New Hampshire

  • 603 Legal Aid – Child Support — 603 Legal Aid provides free legal guidance to income-eligible New Hampshire fathers on child support establishment, modification, enforcemen
  • Federal Office of Child Support – NH — The federal Office of Child Support Services provides oversight, funding, and coordination for interstate child support enforcement cases in

Child Support — Common Questions

How do I open a child support case?
Apply through your state's Child Support Services agency — usually online, in person, or by mail. Applications are free, and the agency handles paternity establishment, order creation, and enforcement on your behalf. You don't need the other parent's cooperation to open a case.
Can I modify my child support order?
Yes, if there's a substantial change in circumstances (income drop of 15–25% or more, job loss, disability, a new child, change in custody time). File a Motion to Modify with the court that issued the original order. Most states don't modify retroactively — file as soon as circumstances change.
What happens if I can't pay?
Contact the child support agency immediately — don't ignore the debt. Options include payment plans, hardship modifications, and in some states, work programs that substitute community service for payment. Accumulated arrears don't disappear but can sometimes be reduced through debt compromise programs.
How is the amount calculated?
Each state uses guidelines — most follow Income Shares (combining both parents' income) or Percentage of Income (only non-custodial parent's income). Online calculators on every state agency site estimate your obligation. The actual order also considers health insurance, childcare, and other add-ons.