Missed child support payments become permanent debt. Learn how states collect it through wages, tax refunds, licenses, passports, and contempt.
Best for the Children Editorial·9 min read·December 4, 2025·Updated October 21, 2026
You check the account on the day the child support is due, and the payment isn't there. Maybe it's the second month in a row. Or you're the parent who owes it, you've lost hours at work, and you're wondering how much trouble you're in. Here's the short answer. Unpaid support doesn't fade away. Each missed payment becomes a legal debt that can't be forgiven after the fact, and in some states it collects interest. State agencies can take it from wages, tax refunds, and bank accounts. They can also report it to credit bureaus and suspend licenses and passports. When nonpayment is willful, it can lead to jail.
The most important rule is one most parents have never heard of. Under the federal Bradley Amendment, enacted in 1986, each child support payment becomes a judgment by operation of law on the day it's due. Once that date passes, the amount is locked in. State judges are prohibited from going back and reducing or forgiving arrears that have already built up. A sympathetic story in court won't change that.
In some states the debt also grows. California charges simple interest of 10% per year on unpaid child support, and family court judges there have no authority to waive or reduce it. Texas charges 6% per year on arrears judgments entered before January 1, 2026. Under Texas House Bill 4213, new judgments rendered on or after that date carry 3%.
Once a payment is a judgment, the question is how it gets collected. The answer is that most collection happens automatically, without anyone going back to court.
Income withholding is the workhorse of child support enforcement. The federal Consumer Credit Protection Act sets a ceiling on how much of a paycheck can be taken, based on "disposable earnings" (pay after legally required deductions):
These limits are much higher than the limits for ordinary consumer debts. Falling behind makes the bite larger, not smaller.
When withholding isn't enough, or there is no regular paycheck to withhold from, the government looks for money elsewhere.
Federal tax refunds. State agencies submit delinquent parents to the federal Treasury Offset Program, which intercepts federal tax refunds. The thresholds are low:
A refund someone was counting on in spring can go straight to the other parent.
Bank and investment accounts. Under a system called the Financial Institution Data Match, state child support programs run automated matches with banks, credit unions, and brokerage houses. The goal is to find accounts belonging to parents who owe support and levy them. A parent who stops paying doesn't need to tell anyone where the money is, because the data match is designed to find it.
Credit reports. Federal law requires states to report past-due support to credit bureaus periodically, after giving the parent notice and a chance to contest it. Many states use a $1,000 threshold. A support debt on a credit report can affect apartment applications, car loans, and mortgages long after the original missed payment.
Some of the most effective tools don't take money at all. They take away something the parent needs.
Driver's and professional licenses. States set their own rules, and the details vary widely:
Passports. Passport denial is a federal action, not a state one. When past-due support exceeds $2,500, the state agency certifies the case to the federal child support office. That office sends the record to the U.S. Department of State, which then refuses to issue or renew a passport or provide other passport services. For anyone who travels or works abroad, $2,500 is a low bar.
If administrative tools don't work, the parent owed support (or the state agency) can ask a judge to hold the nonpaying parent in civil contempt. Contempt can end in jail, but there are constitutional limits.
In Turner v. Rogers (2011), the U.S. Supreme Court ruled on these limits. A parent facing jail for civil contempt over child support doesn't automatically get a court-appointed lawyer, at least when the other parent is also unrepresented. However, the state must provide other procedural safeguards. The court must also make an express finding that the parent actually has the present ability to pay before jailing them.
In practice, contempt is aimed at people who can pay and won't. A parent who has no money is not supposed to be jailed for having none.
A separate and more serious path applies when the child lives in a different state from the parent who owes. Under the federal Deadbeat Parents Punishment Act of 1998 (18 U.S.C. § 228), willfully failing to pay interstate child support is a crime. The penalties depend on how long the debt has gone unpaid and how large it is:
This is the U.S. Department of Justice's role in child support. Federal prosecutors handle these criminal cases. They don't run routine collection or help individual parents with everyday enforcement. That work belongs to state agencies.
Some parents with large arrears hope bankruptcy will reset things. It won't. Federal bankruptcy law classifies child support as a "domestic support obligation," and that type of debt can't be discharged in either Chapter 7 or Chapter 13. The debt survives the bankruptcy, and so do the collection tools described above.
Because of the Bradley Amendment, timing is everything. A change to a support order generally applies only from the date formal notice of the modification request was served on the other parent. Every month spent waiting adds a payment that becomes a judgment and can never be reduced.
So if your income drops, request a modification right away, either through your state child support agency or the court. Don't wait for things to improve, and don't stop paying on your own.
When an order is recalculated, most states use what's called the Income Shares Model. It combines both parents' incomes to estimate the total cost of raising the child, then divides that cost between them. A change in either parent's finances can change the result.
One protection matters especially for parents facing a jail or prison sentence. Federal rules issued in 2016 prohibit states from treating incarceration as "voluntary unemployment" when setting or modifying support. An incarcerated parent can therefore seek a modification instead of leaving prison with a mountain of arrears.
Every state runs a child support program under Title IV-D of the Social Security Act. These programs do the day-to-day work:
Hiring a private family lawyer is also an option, especially for contempt hearings. Most of the enforcement machinery, though, runs through the state agency.
Enforcement requires an order, and for unmarried parents an order generally requires legal paternity. Paternity can be established through genetic testing or through a Voluntary Acknowledgment of Paternity, often signed at the hospital. Federal law gives either parent 60 days to rescind that acknowledgment. After that, it carries the same legal force as a court judgment. With paternity and an order in place, every tool in this article becomes available, and the debt grows each month a payment is missed.
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