A child support judgment is a court-recognized debt for unpaid child support, and under federal law it forms automatically the moment a scheduled payment is missed, carrying the same legal force as any judgment a judge signs from the bench. That automatic status is what makes child support arrears so dangerous to ignore: wages, bank accounts, tax refunds, property, licenses, and even passports are all on the table, and the debt can follow a parent across state lines and, in many states, for life.
How a Missed Payment Becomes a Judgment
Child support begins with a court order setting the amount, the schedule, and any extras like health insurance. When the paying parent falls behind, the unpaid balance is called arrears.
Federal law requires every state to treat each missed payment as a judgment by operation of law on the date it comes due. No separate hearing. No new filing. The judgment exists the moment the payment is late, and it is entitled to full faith and credit in every other state, so a move across state lines changes nothing.1Office of the Law Revision Counsel. 42 USC 666 – Requirement of Statutorily Prescribed Procedures
Arrears also do not expire when the child grows up. They remain collectible long after the child turns 18.
What the Judgment Document Says and How Interest Grows It
When a court formalizes arrears into a single judgment document, it names both parents, references the original case number, states the confirmed principal, and records the entry date. That date matters because it drives interest calculations and enforcement deadlines.
Interest is where the number can get away from a parent. States set their own rates, and the range is wide. Some charge as little as 4% a year. Others go as high as 12%. California, Arizona, Iowa, and Arkansas charge 10% annually. Kentucky and Washington are at 12%. Some states compound the interest, so you pay interest on prior interest. A $20,000 principal balance can grow by thousands within a few years before any new missed payment is added in.
What Collectors Can Do Once a Judgment Exists
A child support judgment opens a collection toolkit that is broader and more aggressive than what applies to most other debts.
Wage and Benefit Garnishment
Wage garnishment is the most common tool. The court orders the employer to withhold a share of each paycheck and send it directly to the child support collection unit. Federal caps on how much can be taken:
- 50% of disposable earnings if the parent is supporting another spouse or child.
- 60% of disposable earnings if the parent is not supporting another spouse or child.
- An additional 5% on top of either limit when the arrears are more than 12 weeks overdue.
A parent with no other dependents who is significantly behind can lose up to 65% of take-home pay.2Office of the Law Revision Counsel. 15 USC 1673 – Restriction on Garnishment The same caps apply to Social Security retirement and disability benefits.3Social Security Administration. How Garnishment Withholding Is Calculated Supplemental Security Income is generally exempt because it is a needs-based program.
Bank Levies and Property Liens
Enforcement agencies can seize funds directly out of a bank account. A levy freezes the account and transfers money to cover arrears, often with little advance warning.
Federal law also requires states to impose automatic liens on real and personal property when child support is overdue. The lien attaches to a house, land, or vehicles the parent owns in the state, and it must be satisfied before the property can be sold or refinanced.1Office of the Law Revision Counsel. 42 USC 666 – Requirement of Statutorily Prescribed Procedures States must honor liens from other states, so owning property somewhere else does not help.
Tax Refund Intercepts
The federal government can intercept tax refunds through the Treasury Offset Program and redirect them to arrears.4Internal Revenue Service. Reduced Refund The trigger thresholds are low: $150 in arrears if the custodial parent receives public assistance, $500 in all other cases.5Administration for Children and Families. When Is a Child Support Case Eligible for the Federal Tax Refund Offset Program State agencies submit the parent’s name and Social Security number to Treasury, and the offset happens automatically when a refund is processed.6Administration for Children and Families. How Does a Federal Tax Refund Offset Work Some states also intercept lottery winnings.
License Suspensions and Passport Denial
Most states suspend driver’s licenses, professional licenses, and recreational licenses like hunting and fishing permits when a parent falls behind. The specific delinquency threshold varies by state. This is one of the most effective pressure tactics because it hits the parent’s ability to earn and move.
At the federal level, once arrears cross $2,500, the State Department will deny any new passport application. The law also authorizes the department to revoke, restrict, or limit an existing passport, though in practice revocation most often happens when a parent surrenders the passport for routine service like adding pages or updating a photo.7Office of the Law Revision Counsel. 42 USC 652 – Duties of Secretary8Administration for Children and Families. Passport Denial Program 101
Contempt of Court
When a parent has the ability to pay but refuses, a judge can hold them in civil contempt. The usual results are a lump-sum “purge payment” to avoid further consequences, probation, or jail. The pivotal question is willfulness. A parent who genuinely cannot pay because of job loss or disability has a defense. A parent hiding income or spending freely while ignoring the obligation does not.9National Conference of State Legislatures. Procedural Justice – Alternatives to Civil Contempt in Child Support Cases
Federal Criminal Charges in Interstate Cases
Most enforcement is state-level, but federal criminal charges enter the picture when the child lives in a different state from the paying parent. Willfully failing to pay in that situation is a crime if the debt has gone unpaid for more than one year or exceeds $5,000. A first offense carries up to six months in prison. If the debt exceeds $10,000 or has been unpaid for more than two years, the maximum rises to two years. Courts must also order full restitution upon conviction.10Office of the Law Revision Counsel. 18 USC 228 – Failure to Pay Legal Child Support Obligations
Can the Judgment Be Reduced or Wiped Out?
This is where many parents hit a wall. Federal law prohibits any state from retroactively reducing or erasing child support arrears that have already become a judgment. The only narrow exception: if a parent has filed a petition to modify the support order and given proper notice to the other parent, modification can apply to the period after that notice.1Office of the Law Revision Counsel. 42 USC 666 – Requirement of Statutorily Prescribed Procedures A court cannot lower what you already owe. It can only lower what you owe going forward, and only from the day you formally asked.
Bankruptcy is not a way out. Child support is classified as a domestic support obligation, and federal bankruptcy law bars discharging it in every chapter, including Chapter 7 and Chapter 13.11Office of the Law Revision Counsel. 11 USC 523 – Exceptions to Discharge
What a parent can do is petition to modify future payments when circumstances substantially change: job loss, disability, a significant drop in income, or a change in how much time the child spends with each parent. File immediately. Every payment that comes due before the petition is filed locks in as a judgment that cannot be reduced later. Waiting a few months can mean thousands of dollars in permanent arrears.
How Long the Judgment Stays Enforceable
There is no single federal clock. States set their own timelines, and the variation is dramatic. California, Connecticut, Florida, Georgia, and Iowa impose no statute of limitations at all, meaning the debt stays enforceable until every dollar is paid. Other states set deadlines ranging from a few years after the child reaches adulthood to 20 years from the date each payment came due. Assuming the debt will quietly expire is a bad bet. In many jurisdictions, it never does.
How to Clear a Child Support Judgment
Satisfying a judgment means paying the full amount, principal plus accrued interest, as a lump sum or through a court-approved payment plan. One trap catches people constantly: buying the child clothes, paying tuition directly, or covering household bills does not count. Payments must go through the official child support collection channels to be credited.
Once the balance reaches zero, get a satisfaction of judgment signed by the receiving parent or the state agency. The paying parent is responsible for filing it with the court clerk and paying any filing fee. That filing is what removes liens from property records and gives you legal proof the debt is resolved. Skip it and the judgment stays on the books indefinitely, surfacing years later when you try to sell a house or pass a background check.