Massachusetts Child Support Office
Updated August 2026
Massachusetts' Child Support Services Division (CSS), part of the Department of Revenue, runs child support statewide with walk-in offices in Boston, Taunton, Woburn, Worcester, and Springfield.
Phone
(800) 332-2733Official Website
Official Site ↗Mailing Address
Department of Revenue – Child Support Services Division
100 Cambridge Street, 5th Floor
Boston, MA 02114-9561
Case Account
Manage Your Case ↗Payments
Make a Payment ↗About the Department of Revenue – Child Support Services Division
Like Florida, Massachusetts runs child support through its tax agency, the Department of Revenue, rather than a health or human services department. It's administered statewide, with walk-in regional offices in Boston, Taunton, Woburn, Worcester, and Springfield.
CSS locates noncustodial parents, establishes paternity, sets support orders, and collects and enforces payments once a case is active, with case management available through the Case Manager online portal.
Massachusetts uses the Income Shares model to calculate support. See how this compares to other states →
Massachusetts'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 Massachusetts →
How to Apply for Child Support in Massachusetts
A parent or caretaker of a child can apply for Massachusetts child support services through the Case Manager portal or by visiting a regional office. Families already receiving TAFDC (Massachusetts' TANF program) or MassHealth 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. CSS then works to establish paternity if needed and get a support order in place.
How to Collect Child Support Payments in Massachusetts
Massachusetts collects most support through income withholding once an order is active, disbursed to the receiving parent by direct deposit or debit card.
Payments can also be made through Massachusetts' Smart e-Pay portal, and both parents can check payment history through the Case Manager system.
Missed Payments & Enforcement
DOR's Child Support Services Division can intercept tax refunds, suspend licenses, and report arrears to credit bureaus when a parent falls 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
Why does Massachusetts child support go through the Department of Revenue? +
Like several other states, Massachusetts administers child support through its tax agency rather than a separate human services department, though the services offered are the same as any state's IV-D program.
How do I apply for Massachusetts child support services? +
Through the Case Manager online portal or by visiting a regional office in Boston, Taunton, Woburn, Worcester, or Springfield. Families already receiving TAFDC or MassHealth are typically referred automatically.
How do I make a Massachusetts child support payment? +
Through the Smart e-Pay portal online, or by mail. Both parents can track payment history through the Case Manager system.
Helpful Resources
Calculator & Guidelines
See how Massachusetts calculates the current amount, and how it compares to other states.
Learn more →When Support Ends
Massachusetts'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 Massachusetts.
Learn more →Interstate Cases
How UIFSA determines jurisdiction when the other parent lives outside Massachusetts.
Learn more →This page is your Massachusetts starting point
Contact information above covers what the Department of Revenue – Child Support Services Division 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 Massachusetts, interstate rules — not Massachusetts'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.