What child support is and who pays it
Child support is a court-ordered payment from one parent to the other to help cover a child's living expenses. The parent who pays is called the obligor; the parent who receives it is called the obligee. The payment goes toward food, housing, clothing, school costs, and medical care.
Child support exists because both parents have a legal duty to support their children, even if they do not live together. When parents separate or divorce, a court decides how much the paying parent owes based on their income, the custody arrangement, and state law. The amount is not negotiable between parents — it is set by statute and calculated using a formula that varies by state.
Child support continues until the child reaches the age of majority in that state, usually 18, or sometimes until age 19 or 21 if the child is still in high school or has special needs. The obligation ends when the child marries, joins the military, or becomes self-supporting, depending on state rules.
Key Takeaways
- Child support is calculated using a state-specific formula based on both parents' income, custody time, and other factors — not by agreement between the parents.
- The paying parent's income includes wages, self-employment earnings, bonuses, and sometimes unemployment or disability benefits, depending on state law.
- Payments are typically deducted from the obligor's paycheck through wage withholding, or paid directly to the state's child support agency, which forwards them to the receiving parent.
- A parent can request a modification if income changes significantly or custody changes, but the order remains in effect until a court changes it.
- Failure to pay child support can result in wage garnishment, tax refund interception, driver's license suspension, and in some cases criminal charges.
How child support amounts are calculated
States use one of three models to calculate child support: the income shares model, the percentage of income model, or the Melson formula. Most states use income shares, which considers both parents' gross income and divides the support obligation based on each parent's share of total income.
The calculation includes the obligor's gross income — wages, salary, bonuses, self-employment income, rental income, and sometimes unemployment or disability benefits. It excludes means-tested benefits like TANF or SNAP. The court also factors in the number of children, the amount of time each parent spends with the children, childcare costs, health insurance costs, and extraordinary expenses like special education or medical needs.
Once the court calculates the basic child support obligation, it adjusts for custody time. If the obligor has the children 50 percent of the time, the obligation is lower than if they have them 10 percent of the time. The final order states a monthly payment amount and the date it is due.
How payments are collected and transferred
Most child support payments are collected through wage withholding, which means the obligor's employer deducts the payment from each paycheck and sends it to the state's child support agency. The employer is required by law to comply with the withholding order, and the obligor cannot refuse or opt out.
The state's child support agency (sometimes called the Title IV-D agency) receives the payment, records it, and forwards it to the receiving parent. This process usually takes a few days to a week. If the obligor is self-employed or does not have a regular employer, they may be required to pay the state agency directly, usually by check or electronic transfer on a set date each month.
Some obligors pay through the state's online payment portal, by phone, or by automatic bank transfer. Paying through the state agency creates an official record of payment, which protects the obligor if a dispute arises later. Paying the receiving parent directly, without going through the agency, is not recommended because there is no proof of payment.
Modifying a child support order
A child support order can be changed if there is a substantial change in circumstances. This usually means the obligor's income has increased or decreased by 10 percent or more, custody has changed, or a child has aged out of the order. The parent seeking the change must file a motion with the court and show proof of the change — recent pay stubs, tax returns, or a new custody agreement.
The court will recalculate the obligation using the new income or circumstances and issue a modified order. Until the court issues the new order, the original order remains in effect and payments must continue at the original amount. A parent cannot stop paying because they believe the amount is unfair or because they plan to request a modification.
Some states allow parents to request a modification review every three years, even without a change in circumstances, if the calculated amount would differ by a certain percentage — often 10 to 15 percent. This is called a periodic review and is meant to keep orders current with inflation and wage growth.
What happens if child support is not paid
If the obligor falls behind on payments, the state child support agency can take enforcement action. The first step is usually a notice of arrearage, which informs the obligor of the amount owed and gives them time to pay. If payment is not made, the agency can pursue several remedies.
Wage garnishment increases the amount withheld from the obligor's paycheck to recover arrears. Tax refund interception allows the state to seize federal and state income tax refunds to pay down the debt. The obligor's driver's license, professional license, or recreational license can be suspended. Bank accounts can be frozen, and liens can be placed on property.
In cases of willful non-payment, the obligor can face contempt of court charges, which may result in fines or jail time. However, jail is typically a last resort and is used only when the obligor has the ability to pay but refuses. A parent who is unemployed or underemployed and cannot pay should contact the court or the child support agency to request a modification rather than ignore the debt.
Child support and custody changes
If custody changes — for example, the child moves to live primarily with the obligor — the child support obligation changes. The parent who now has primary custody may become the obligor, and the previous obligor may become the obligee. The parent seeking the change must file a motion to modify custody and child support with the court.
Custody changes are common as children age and express preferences, or as parents' circumstances change. The court will consider the child's best interests and may order a new custody arrangement and a recalculated child support amount. Until the court issues a new order, the existing order remains in effect.
Child support and other benefits
Child support is separate from other financial arrangements between parents. It is different from alimony or spousal support, which is paid to an ex-spouse, not a child. It is also separate from property division in a divorce.
If a parent receives TANF (Temporary information for Needy Families) or other means-tested benefits, the state may pursue child support on behalf of the family to reduce the cost of the benefit. In these cases, some or all of the child support collected goes to the state to reimburse the benefit program, and the receiving parent may not see the full amount. This is called assignment of support rights.
Frequently Asked Questions
Can child support be waived or forgiven by the parents?
No. Child support is a legal obligation set by the court, not a private agreement between parents. Even if both parents agree to waive it, the court will not enforce that agreement. Only a judge can modify or terminate a child support order through a formal motion and hearing.
What if the obligor loses their job?
The obligor should contact the court or the child support agency when ready and request a modification. If they stop paying without requesting a modification, they will accumulate arrears and face enforcement action. A temporary reduction or suspension may be granted while the obligor is unemployed, but they must show proof of job loss and efforts to find new work.
Does child support cover college expenses?
In most states, child support ends when the child turns 18 or graduates high school. College expenses are not automatically included in the child support order. However, some states allow parents to agree to extend support through college, or a parent can request that the court order the obligor to contribute to college costs as part of a modification.
Can a parent refuse visitation if child support is not paid?
No. Child support and custody are separate legal issues. A parent cannot withhold visitation or custody time as punishment for non-payment, and a parent cannot refuse to pay child support because they are denied visitation. If either parent violates the order, the other parent must file a motion with the court to enforce it.
How long does child support last if the child has special needs?
If a child has a disability or special needs, child support may continue past the age of majority. Some states extend the obligation until age 21 or 23, or indefinitely if the child cannot become self-supporting. The court will consider the child's condition and needs when setting the duration of support.