New Hampshire Child Support Office
Updated August 2026
New Hampshire's Bureau of Child Support Services (BCSS), part of the Department of Health and Human Services, runs child support statewide from its central office in Concord.
Phone
(603) 271-4427Official Website
Official Site ↗Mailing Address
Department of Health and Human Services – Bureau of Child Support Services
Central Information Unit - BCSS, 129 Pleasant Street
Concord, NH 03301-3857
Case Account
Manage Your Case ↗Payments
Make a Payment ↗Enforcement
Report Missed Payments ↗About the Department of Health and Human Services – Bureau of Child Support Services
BCSS is New Hampshire's IV-D agency, run statewide from a central office in Concord rather than by county. It locates noncustodial parents, establishes paternity, sets support orders, and collects and enforces payments once a case is active.
Case management is available through the NH e-ChildSupport customer portal, and mailed payments go to a separate regional processing center from the main administrative office.
New Hampshire uses the Income Shares model to calculate support. See how this compares to other states →
New Hampshire's default child support termination age is 18. See the full rules, including high school and disability extensions →
Circumstances change — see how to request a modification in New Hampshire →
How to Apply for Child Support in New Hampshire
A parent or caretaker of a child can apply for New Hampshire child support services through the e-ChildSupport customer portal. Families already receiving FANF (New Hampshire's TANF program) or Medicaid are typically referred for services automatically.
The application requires identifying information for both parents and the child, along with any existing custody or support paperwork. BCSS then works to establish paternity if needed and get a support order in place.
How to Collect Child Support Payments in New Hampshire
New Hampshire collects most support through income withholding once an order is active, disbursed to the receiving parent by direct deposit or debit card.
Payments can be made online through ExpertPay, in cash through MoneyGram, or by mail to the Child Support Regional Processing Center — a separate lockbox address from BCSS's main office.
Missed Payments & Enforcement
New Hampshire's enforcement page lists tools including tax refund interception, license suspension, and credit bureau reporting for parents who fall behind on payments.
As in every state, federal law allows a passport to be denied or revoked once past-due support exceeds $2,500.
Frequently Asked Questions
How do I apply for New Hampshire child support services? +
Through the e-ChildSupport customer portal. Families already receiving FANF or Medicaid in New Hampshire are typically referred for services automatically.
Where do I mail a New Hampshire child support payment? +
Mailed payments go to the Child Support Regional Processing Center in Manchester, a separate lockbox address from BCSS's main Concord office.
What happens if the other parent stops paying in New Hampshire? +
BCSS can intercept tax refunds, suspend licenses, and report arrears to credit bureaus. Once past-due support exceeds $2,500, a passport can also be denied under federal law.
Helpful Resources
Calculator & Guidelines
See how New Hampshire calculates the current amount, and how it compares to other states.
Learn more →When Support Ends
New Hampshire's default termination age, plus how high school, disability, or college can extend it.
Learn more →Modify an Order
What counts as a substantial change and how to request a modification in New Hampshire.
Learn more →Interstate Cases
How UIFSA determines jurisdiction when the other parent lives outside New Hampshire.
Learn more →This page is your New Hampshire starting point
Contact information above covers what the Department of Health and Human Services – Bureau of Child Support Services handles directly, but the guideline model, termination age, and modification rules that decide your amount live on the dedicated pages linked here. And if the other parent lives outside New Hampshire, interstate rules — not New Hampshire's own procedures — determine which state has authority.
Nearby State Child Support Offices
Rules, portals, and enforcement tools change at the state line. If a case involves parents in more than one state, start with each state's own office — interstate cases are handled through direct cooperation between the agencies involved.