Missouri Child Support Office
Updated August 2026
Missouri's Child Support Program, run by the Family Support Division (FSD) of the Department of Social Services, handles child support statewide from its central office in Jefferson City.
Phone
(866) 313-9960Official Website
Official Site ↗Mailing Address
Department of Social Services – Family Support Division, Child Support Program
615 Howerton Court, P.O. Box 2320
Jefferson City, MO 65102-2320
Case Account
Manage Your Case ↗Payments
Make a Payment ↗About the Department of Social Services – Family Support Division, Child Support Program
FSD's Child Support Program is Missouri's IV-D agency, administered statewide through the Department of Social Services 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 My.mo.gov customer portal, and applications typically mail to a separate P.O. Box from the main program office address.
Missouri uses the Income Shares model to calculate support. See how this compares to other states →
Missouri'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 Missouri →
How to Apply for Child Support in Missouri
A parent or caretaker of a child can apply for Missouri child support services through the My.mo.gov portal or by mailing an application to FSD. Families already receiving TANF or Medicaid in Missouri 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. FSD then works to establish paternity if needed and get a support order in place.
How to Collect Child Support Payments in Missouri
Missouri 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 Missouri's Smart e-Payments portal, and noncustodial parents can call 888-761-3665 for payment-specific questions.
Missed Payments & Enforcement
Missouri's enforcement tools include driver's license suspension and standard federal collection methods, described on FSD's noncustodial parent resources page, 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 Missouri child support services? +
Through the My.mo.gov customer portal or by mailing an application to FSD. Families already receiving TANF or Medicaid in Missouri are typically referred for services automatically.
How do I make a Missouri child support payment? +
Through the Smart e-Payments portal online, or call 888-761-3665 for payment-specific questions if you're a noncustodial parent.
What happens if the other parent stops paying in Missouri? +
FSD can suspend a driver's license and use standard federal collection tools like tax refund interception. Once past-due support exceeds $2,500, a passport can also be denied or revoked under federal law.
Helpful Resources
Calculator & Guidelines
See how Missouri calculates the current amount, and how it compares to other states.
Learn more →When Support Ends
Missouri'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 Missouri.
Learn more →Interstate Cases
How UIFSA determines jurisdiction when the other parent lives outside Missouri.
Learn more →This page is your Missouri starting point
Contact information above covers what the Department of Social Services – Family Support Division, Child Support Program 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 Missouri, interstate rules — not Missouri'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.