What child support is and who decides the amount

Child support is a court order requiring one parent to pay money to the other parent (or guardian) to help cover a child's living costs. A judge sets the amount based on state law, not on what the parents agree to or what feels fair. The paying parent is called the obligor; the receiving parent is called the obligee.

Every state has a formula that calculates child support from the parents' incomes, the number of children, and custody time. The formula varies by state — some start with combined parental income and divide it by percentage; others calculate each parent's share separately. A judge can adjust the amount up or down if there are unusual circumstances (very high income, special needs, significant travel costs for visitation), but the formula is the starting point, not a suggestion.

The order covers basic living expenses: food, housing, utilities, clothing, school costs. It does not automatically cover medical insurance, childcare, or extracurricular activities, though a judge can order those separately. The order stays in place until the child turns 18 or graduates high school (whichever is later in most states), or until a parent asks the court to change it.

Key Takeaways

  • A judge calculates child support using your state's formula based on both parents' incomes and custody time, not on what either parent wants to pay.
  • The paying parent must continue payments until the child turns 18 or finishes high school, even if custody or income changes, unless the court modifies the order.
  • Payments go to the receiving parent directly, or through your state's child support enforcement agency if the court routes them that way.
  • If the paying parent loses a job or income drops significantly, they can ask the court to lower the amount, but they must file a motion — the order does not automatically adjust.
  • If payments fall behind, the state can intercept tax refunds, garnish wages, suspend licenses, or file a contempt case against the paying parent.

How the court sets the amount

The process starts with both parents filing financial documents: recent tax returns, pay stubs, bank statements, and a list of other children they support. The court uses these to calculate each parent's gross income (before taxes). Some states include overtime, bonuses, and self-employment income; others do not. Some count benefits like food stamps or housing assistance; most do not.

Once the court has the income figures, it applies the state formula. In an income shares model (used by most states), the court adds both parents' incomes, looks up the combined amount in a table, and divides the resulting child support obligation by each parent's percentage of the total income. In an income percentage model (used by a few states), the court takes the paying parent's income and multiplies it by a set percentage per child — typically 17 percent for one child, 25 percent for two, and so on.

After the formula produces a number, the judge considers whether to adjust it. Reasons for adjustment include: one parent has significantly higher income than the other, the child has special needs, one parent pays for health insurance or childcare, or the parents have roughly equal custody time. The judge must write down the reason for any adjustment. If the judge deviates from the formula by more than 10 percent in most states, the order must explain why.

Who collects the money and how it gets paid

The paying parent can send money directly to the receiving parent, but most courts route payments through the state's child support enforcement agency (sometimes called the IV-D agency, after the federal law that funds it). The enforcement agency acts as a middleman: it receives the payment, records it, and forwards it to the receiving parent. This creates an official record of every payment, which protects both parents if there is a dispute later.

The paying parent can pay by check, money order, automatic bank transfer, or through the state's online payment portal. Some states charge a small fee (usually $1 to $3 per transaction) for certain payment methods. If the paying parent uses the state portal, there is usually no fee. The receiving parent should never accept cash or personal checks without also reporting the payment to the enforcement agency, because cash payments do not create a record.

Payments are due on the date set in the order — usually the first or fifteenth of the month. If the paying parent misses a payment, it becomes arrears (back pay owed). Arrears accrue interest in most states, typically 6 to 10 percent per year. The receiving parent can ask the court to enforce the order, and the state can take action without waiting for the receiving parent to ask.

What happens if the paying parent cannot pay or income changes

If the paying parent's income drops — due to job loss, illness, or reduced hours — the order amount does not automatically change. The paying parent must file a motion to modify with the court, usually through the child support enforcement agency or a family law attorney. The motion must include current financial documents showing the income change and a request for a new amount.

The court will not reduce the order retroactively (going back in time) unless the paying parent filed the motion before falling behind. If a parent waits six months to file after losing a job, the court will usually set a new amount going forward, but the arrears from those six months still owed. Some states allow a temporary reduction if the paying parent can show the income loss is temporary (a seasonal job, a temporary layoff), but the order reverts to the original amount when the job returns.

If the paying parent simply does not pay and does not file to modify, the state can enforce the order. The enforcement agency can garnish wages (take money directly from paychecks), intercept tax refunds, place a lien on property, suspend a driver's license or professional license, or file a contempt of court case. Contempt can result in fines or jail time. The paying parent has the right to a hearing before most enforcement actions, but must request it.

How the receiving parent gets the money

If payments go through the state enforcement agency, the receiving parent receives a check or direct deposit on a set schedule — usually within one to three business days after the state receives the payment. The receiving parent gets a statement showing all payments received and any arrears still owed. If the paying parent pays directly to the receiving parent (which is rare and not recommended), the receiving parent should still report those payments to the enforcement agency so they appear in the official record.

The receiving parent cannot refuse a payment or ask the paying parent to stop paying. If the receiving parent wants to stop collecting child support, they must ask the court to terminate the order. The court will usually grant this only if both parents agree or if the child has reached the age of majority in that state.

Modifying or ending a child support order

Either parent can ask the court to change the amount if there has been a substantial change in circumstances. This usually means a change in income of 10 percent or more, a change in custody time, or a significant change in the child's needs. The parent asking for the change must file a motion and provide current financial documents. The court will recalculate using the current formula and decide whether to modify.

Some states allow parents to modify the order every three years automatically, even without a change in circumstances, if they both agree. Other states require a substantial change. The process takes several weeks to several months, depending on whether both parents agree and how busy the court is.

The order ends automatically when the child turns 18 or graduates high school (whichever is later), unless the child is still in high school after turning 18. In some states, if the child is disabled and cannot support themselves, the order can continue past 18. If the child dies, the order ends immediately. If the paying parent dies, the order usually ends, though some states allow the receiving parent to make a claim against the paying parent's estate for arrears owed.

What happens if the paying parent moves to another state

Child support orders are enforceable across state lines under the Uniform Interstate Family Support Act (UIFSA). If the paying parent moves, the receiving parent can ask their state to enforce the order in the new state without filing a new case. The receiving parent's state sends the order to the paying parent's new state, which registers it and can enforce it using that state's methods (wage garnishment, license suspension, and so on).

If the paying parent moves and the receiving parent wants to modify the amount, the case can stay in the original state or move to the new state, depending on which state has jurisdiction. This is complicated and usually requires an attorney. The key point is that moving does not stop the obligation to pay.

Frequently Asked Questions

Can I get child support if the parents were never married?

Yes. If paternity is established (either through a voluntary acknowledgment or a court order based on a DNA test), the father has the same obligation to pay child support as a divorced parent. The process is the same: the court calculates income, applies the formula, and issues an order. If paternity is disputed, the receiving parent can ask the court to order a DNA test.

What if the paying parent is self-employed or has irregular income?

The court uses tax returns and business records to calculate average income over the past two to three years. If income is very irregular, the judge may average it or use the most recent year. Self-employed parents must provide business tax returns, profit-and-loss statements, and bank statements. The court can also order an accountant to review the records if there is suspicion of underreporting income.

Does child support cover college or extracurricular activities?

No, not automatically. Child support covers basic living expenses until high school ends. College, sports, music lessons, and camps are extras. A parent can ask the court to order the other parent to contribute to these costs, but it requires a separate motion and is not may provide. Some courts order contributions based on the parents' ability to pay; others do not.

What if the receiving parent remarries or moves in with someone?

The paying parent's obligation does not change. Child support is based on the biological or adoptive parents' incomes, not on whether the receiving parent has a new partner or spouse. A new partner's income does not reduce the paying parent's obligation, and the receiving parent's remarriage does not end the order.

Can I stop paying if I lose custody or the child refuses to see me?

No. Child support and custody are separate. Even if a parent has no custody or visitation, they still owe child support. If a parent believes the custody arrangement should change, they must ask the court to modify it. Until the court changes the order, the obligation to pay remains.