To apply for child support, contact your state’s child support (IV-D) agency and submit an application with identification, your child’s birth certificate, income records, and whatever information you have about the other parent. Most states let you apply online, by mail, or in person, and the application fee is capped by federal law at $25 for families not receiving public assistance. You don’t need a lawyer. The agency handles locating the other parent, establishing paternity if needed, setting the support amount, and collecting payments, though a straightforward case still typically takes several months to reach a final order.
Who Can Open a Case
The parent the child lives with most of the time can file for support from the other parent. A grandparent, aunt, uncle, or other relative with legal custody or guardianship can also open a case to help cover the child’s expenses. If you receive Temporary Assistance for Needy Families (TANF), you don’t file separately — the state automatically opens a child support case and pursues the noncustodial parent for repayment, and cooperating with the agency is a condition of continuing benefits.1Social Security Administration. 42 U.S.C. 654 – State Plan for Child and Spousal Support
Find Your State’s Child Support Office
Every state runs a program under Title IV-D of the Social Security Act, which is why you’ll see the offices called “IV-D agencies.” The department that houses the program varies by state; it may sit within the attorney general’s office, a department of social services, or a revenue agency. The federal Office of Child Support Services keeps an online directory where you pick your state and get local contact information and application links.2Administration for Children and Families. Find a Local Child Support Office Most state agencies also let you start the application on their own website without visiting in person.
What to Gather Before You Apply
Bring as much of the following as you can. Missing pieces won’t necessarily stop your application, but the more you hand over, the faster the case moves.3Administration for Children and Families. What Documents Do I Need to Bring to the Child Support Office
- Government-issued photo ID, plus Social Security numbers for you, the other parent, and each child on the case.
- Birth certificates for every child included in the request.
- Income records: recent pay stubs, tax returns, and documentation of other income such as rental payments or investment accounts. Include anything you have on the other parent’s income or employer.
- Copies of any existing court orders between you and the other parent — divorce decree, custody order, or protection order.
- Health insurance details: policy numbers, coverage costs, and information about any insurance currently covering the children. Medical support is often built into the final order.
- Whatever you know about the other parent: current or last-known address, employer name and address, vehicle description, date of birth, and any other identifying details.
Don’t hold back your application because you can’t find the other parent. Once your case is open, the agency has access to federal and state databases built to locate people, and even partial information — a former address, a relative’s name, a Social Security number — gives them a starting point.
Filing the Application and Paying the Fee
The application asks for the information above plus some questions you might not expect, like the other parent’s physical description, known associates, or professional licenses. These help the agency find someone who’s hard to locate. Read the paternity section carefully: if you and the other parent were never married, the form will flag that legal parentage has to be established before a support order can be issued.
You can usually submit through the agency’s online portal, by mail, or in person. Federal law caps the application fee at $25 for families not receiving public assistance, and states can set it lower based on ability to pay. If you receive TANF, Medicaid, or foster care benefits, the fee is waived. A separate $35 annual service fee applies later to non-TANF cases, but only after the agency has collected at least $550 on your behalf, and it comes out of the collected support rather than a separate bill.4Office of the Law Revision Counsel. 42 USC 654 State Plan for Child and Spousal Support
If You Have Safety Concerns About the Other Parent
Tell the caseworker at the start of the application if you have a history of domestic violence or abuse involving the other parent. Federal law requires child support agencies to protect the location of parents and children when disclosure could put them at risk. You can ask for a Family Violence Indicator on your case, which blocks your address and contact information from being shared through the Federal Parent Locator Service or released to the other parent.5Administration for Children and Families. Overview of Federal Parent Locator Service
To set the indicator, you typically file a sworn statement describing specific incidents or threats. An existing protection order also triggers the safeguard. Once it’s on, any request to release your information requires judicial review, and the court must withhold it if disclosure could be harmful. The protection applies across the entire child support enforcement system, not just the local office handling your case.
If You and the Other Parent Weren’t Married
When parents were married at the time of the child’s birth, the law presumes both are legal parents and no extra step is needed. When they weren’t married, legal parentage has to be established before the agency can issue a support order. This is where cases most often stall, so it helps to know the two paths.
The simpler one is a voluntary acknowledgment of paternity. Federal law requires every state to run a hospital-based program where unmarried parents can sign a legal acknowledgment at the time of birth.6GovInfo. In-Hospital Voluntary Paternity Acknowledgment Program Either parent has 60 days after signing to rescind it. After that window closes, the acknowledgment becomes a legal finding of parentage that carries the same weight as a court order. If one was signed at the hospital and never rescinded, you’re already past this hurdle when you apply.
When no acknowledgment exists, the child support agency can pursue a legal determination of parentage. This often involves genetic testing, which the agency arranges and typically pays for. The noncustodial parent is notified and given the chance to cooperate or contest. If testing confirms a biological relationship, or the alleged parent fails to appear, the court or administrative body issues a parentage order, which then clears the way for the support calculation.7Administration for Children and Families. Essentials for Attorneys in Child Support Enforcement
What Happens After You Submit the Application
Once the agency accepts your application, the case moves through a predictable sequence, but the timeline depends heavily on your circumstances. A straightforward case between two cooperating parents in the same state can reach a final order in a few months. Cases involving a missing parent, contested paternity, or a parent in another state take longer.
Locating the Other Parent
If the other parent’s whereabouts are unknown, the agency uses the Federal Parent Locator Service, which cross-references Social Security records, tax data, employment databases, and other federal and state information.5Administration for Children and Families. Overview of Federal Parent Locator Service This is one of the main advantages of going through the IV-D agency rather than trying to file on your own — you get access to search tools no private citizen can use.
Formal Notice to the Other Parent
The other parent has to receive formal legal notice of the support action. This gives them the chance to respond, provide their own financial information, and either agree to a proposed order or contest it. Due process requires this step, and it can add weeks if the parent is hard to serve.
Setting the Support Amount
The agency reviews both parents’ income and applies the state’s child support guidelines to propose a dollar amount. If both parents agree, the proposed order can be finalized administratively. If there’s a dispute, the case goes to a hearing before a judge or hearing officer, where each side presents financial evidence and the court enters a binding order.
Income Withholding Begins Automatically
Federal law makes income withholding the default collection method. When the order is issued, the noncustodial parent’s employer receives a withholding notice directing them to deduct the support from each paycheck and send it to the state disbursement unit.8Office of the Law Revision Counsel. 42 USC 666 Requirement of Statutorily Prescribed Procedures to Improve Effectiveness of Child Support Enforcement Withholding starts with the order itself; the paying parent doesn’t need to fall behind first. Both parents can agree to an alternative arrangement, but withholding is the standard.
File Sooner Rather Than Later
Many states allow the support obligation to be set retroactively to the date you filed your application, not the date the order is finally issued. If your case takes six months to reach a final order, that retroactive reach can matter significantly. Get the application in as soon as you have the basic documents together; you can supplement information later, but you can’t back-date the filing itself.