To enforce a child support order, you have two starting points: open a case with your state’s child support enforcement agency, or file a motion to enforce directly in the court that issued the order. Both paths unlock the same collection tools — income withholding, tax refund interception, license suspension, passport denial, liens, credit reporting, and contempt of court — but they get there differently. The agency route is easier and free or nearly free; the court route is faster when a parent is deliberately hiding income and gives you access to contempt findings that can include jail time.
The Two Paths: Agency or Court
Every state runs a child support enforcement program, sometimes called a Title IV-D agency. You can apply online, by mail, or in person.1Administration for Children and Families. Three Steps to Sign Up for Child Support Services Once the case is open, agency staff use federal and state databases to locate the other parent, find their employer, and identify assets. They send income withholding orders, intercept tax refunds, report the debt to credit bureaus, and pursue license suspension without you having to file anything in court. For most people this is the simplest place to begin.
The court route means filing a motion to enforce or a motion for contempt with the clerk of the court that issued the original order. You (or a sheriff’s deputy or process server) then have to formally serve the paperwork on the other parent. At the hearing, both parents appear, you present evidence of missed payments, and the judge can enter a judgment for the full arrears, order a payment plan, and impose enforcement measures directly. This path is essential when a parent is deliberately hiding income or ignoring the agency, because a contempt finding is only available through the court.
Nothing stops you from doing both. Many parents open an agency case for routine collection and go to court separately when they need a contempt finding.
What You Need Before You Start
Whichever route you take, gather two things first: a certified copy of the child support order from the clerk of the court that issued it, and a detailed payment history showing every payment due and every payment received. The difference is your arrears figure, and it anchors every enforcement action.
Then collect as much identifying information about the other parent as you can — full name, date of birth, Social Security number, last known home and work addresses, and current employer.2Administration for Children and Families. What Documents Do I Need to Bring to the Child Support Office Employer information is especially useful for wage withholding. Don’t wait until you have everything. State agencies have locate tools that can fill in the gaps.
Income Withholding
Income withholding collects more child support than any other tool. The employer receives an official Income Withholding for Support order and is legally required to deduct the support amount from each paycheck and send it to the state disbursement unit.3Administration for Children and Families. Processing an Income Withholding Order or Notice Employers must honor a child support withholding order ahead of most other garnishments, with the only exception being an IRS tax levy that predates the underlying support order.4Administration for Children and Families. Income Withholding
Withholding isn’t limited to regular wages. It reaches commissions, bonuses, workers’ compensation, disability payments, pensions, and retirement income.4Administration for Children and Families. Income Withholding
How Much Can Be Withheld
Federal law caps withholding as a percentage of the paying parent’s disposable earnings. The cap depends on whether the parent supports other dependents and whether they are more than 12 weeks behind.5Office of the Law Revision Counsel. 15 US Code 1673 – Restriction on Garnishment
- 50% if the parent supports a spouse or other children and owes no arrears older than 12 weeks
- 55% if the parent supports a spouse or other children and does owe arrears older than 12 weeks
- 60% if the parent does not support other dependents and owes no arrears older than 12 weeks
- 65% if the parent does not support other dependents and owes arrears older than 12 weeks
Ordinary consumer debt garnishment is capped at 25%. Child support gets priority treatment because courts treat it as essential to the child’s welfare.
When the Other Parent Is Self-Employed
Withholding needs an employer, so it doesn’t work against a parent who works for themselves. Enforcement then shifts to bank account seizures, liens on property and business assets, tax refund interception, and license suspensions that hit the parent’s ability to operate. If you suspect underreported income, tell the court or your agency: they can subpoena financial records and tax returns to establish what the parent actually earns.
Tax Refund Interception
State and federal agencies can seize tax refunds through the Federal Tax Refund Offset Program. The past-due amount must be at least $150 in cases where the custodial parent has received public assistance, and $500 for families who have not.6GovInfo. 42 US Code 664 – Collection of Past-Due Support From Federal Tax Refunds The other parent gets a pre-offset notice and a chance to contest the amount before any money is taken.7Administration for Children and Families. How Does a Federal Tax Refund Offset Work
One wrinkle: if the parent filed jointly with a new spouse, the new spouse can file an injured spouse claim with the IRS to protect their share of the refund. Only the delinquent parent’s portion is intercepted, so the amount you actually collect can be smaller than the total refund.
License Suspension and Passport Denial
States can suspend a delinquent parent’s driver’s license, professional licenses, and recreational licenses like hunting or fishing permits. Losing the ability to drive or practice a licensed profession is real pressure, though it can backfire if the parent needs to drive to work to earn the money they owe. Some judges will issue a restricted license for work-related driving while keeping other suspensions in place.
At the federal level, a parent who owes $2,500 or more in past-due support faces denial of a U.S. passport. The State Department refuses new passports and can revoke or restrict an existing one when the parent surrenders it for service, such as adding pages or updating a photo.8Office of the Law Revision Counsel. 42 US Code 652 – Duties of Secretary State agencies submit qualifying names, and the federal Office of Child Support Services forwards them to the State Department.9Office of Child Support Services. Passport Denial Program 101 For a parent who travels internationally, this is often the fastest way to get their attention.
Liens and Credit Reporting
A lien can be placed on real estate, vehicles, bank accounts, or other property the parent owns. It doesn’t force a sale, but it prevents the parent from selling or refinancing without first satisfying the child support debt. When they eventually try to sell the house or the car, you get paid from the proceeds. State law governs how child support liens are filed and enforced, so the process varies.
Federal law also requires state agencies to report delinquent parents to consumer credit bureaus.10Administration for Children and Families. Credit Reporting Agencies A child support delinquency on a credit report affects the parent’s ability to get a mortgage, car loan, credit card, or apartment lease.
Medical Support
If the order requires the other parent to provide health insurance and they haven’t enrolled the child, the enforcement agency can send a National Medical Support Notice to the parent’s employer.11Office of Child Support Enforcement. National Medical Support Notice Forms and Instructions The employer must enroll the child in an available plan and withhold the parent’s share of the premiums from their paycheck. This is separate from cash support withholding, and the employer has to comply the same way.
Contempt of Court
When a parent can pay but deliberately won’t, contempt is the sharpest tool available. A finding of contempt means the judge has determined the parent willfully violated the court order. Consequences range from fines to jail, and the threat of jail often produces payment when nothing else has.
Contempt happens in court, not through the agency, though an agency can refer a case. You or your attorney file a motion asking the court to hold the other parent in contempt. At the hearing, once you show payments haven’t been made, the burden typically shifts to the parent to prove they couldn’t pay rather than chose not to. A parent who was laid off and genuinely has no income has a defense. A parent earning good money and spending it elsewhere does not.
Jail sentences for civil contempt in child support cases vary by state but commonly cap at six months. The parent can usually get out earlier by paying the arrears or agreeing to a payment plan, because the jail time is meant to coerce compliance, not punish. The parent holds the key to their own release.
Federal Criminal Charges
Most enforcement stays at the state level, but federal prosecution is available when a parent willfully fails to pay support for a child in another state. It becomes a federal crime when the debt has gone unpaid for more than one year or exceeds $5,000. A first offense is a misdemeanor with up to six months in prison.12Office of the Law Revision Counsel. 18 US Code 228 – Failure to Pay Legal Child Support Obligations
Penalties escalate when the obligation has been unpaid for more than two years, exceeds $10,000, or the parent crosses state lines to evade it. The charge then becomes a felony with up to two years in prison, plus mandatory restitution equal to the full unpaid balance at sentencing.12Office of the Law Revision Counsel. 18 US Code 228 – Failure to Pay Legal Child Support Obligations Federal prosecution is rare and reserved for egregious cases, but even the possibility of a felony record shifts negotiations.
When the Other Parent Lives in Another State
Interstate enforcement is more complicated but far from impossible. The Uniform Interstate Family Support Act, adopted in all 50 states, sets the framework. Only one state has jurisdiction to modify a support order, and every other state must recognize and enforce it.
Practically, your state agency coordinates with the agency in the state where the other parent lives. You don’t need to travel or hire a lawyer there. Your local agency sends the case over, and the other state uses its own tools — income withholding, license suspension, liens, whatever is available locally — to collect. If you’re working with the agency, this happens behind the scenes.
What the Debt Can and Can’t Do
Child support arrears are unusually hard to escape. They cannot be discharged in bankruptcy. Federal law exempts domestic support obligations from discharge in both Chapter 7 and Chapter 13.13Office of the Law Revision Counsel. 11 US Code 523 – Exceptions to Discharge Credit card debt and medical bills may go away in bankruptcy; every dollar of unpaid child support survives.
In most states there is no statute of limitations on collecting arrears. The obligation doesn’t vanish when the child turns 18. If a parent owes $30,000 at that point, enforcement can continue for years afterward. Roughly two-thirds of states also charge interest on unpaid child support, with rates typically running from 4% to 12% per year, so the balance grows over time.
One thing to keep in mind on the other side of the ledger: a parent who has genuinely lost income can petition the court to modify future payments. Modification is not retroactive and does not erase what’s already owed. And it only takes effect once the court approves it. A parent who simply stops paying after a job loss, without going back to court, keeps accruing arrears at the original rate.