Child Support Age Limits: When Does Support End in Each State?

The General Rule: Age 18

In the majority of U.S. states, child support obligations end when the child reaches the age of majority, which is 18 years old. This reflects the legal principle that a person becomes an adult at 18, with the rights and responsibilities that come with adulthood. However, this general rule comes with significant exceptions that vary widely from state to state.

It is critical to understand that child support does not automatically stop when your child turns 18 (or whatever the age limit is in your state). In virtually every state, you must take affirmative steps to terminate the support order. If you simply stop paying, you will accumulate arrears that can result in enforcement actions, including liens, wage garnishment, and even contempt of court charges. See our guide on child support liens for more on enforcement consequences.

The age of emancipation is just the starting point. Many states extend support beyond the age of majority for children who are still in high school, attending college, or who have disabilities. Understanding the specific rules in your state is essential for proper planning.

States Where Support Ends at 18

The following states generally terminate child support at age 18, without automatic extensions for high school enrollment (though some may allow court-ordered extensions in specific cases):

• Alaska — Age 18, unless the child is still in high school and expected to graduate before age 19
• Arizona — Age 18, or until the child graduates from high school if still attending at 18
• Colorado — Age 19, but the obligation can end at 18 in certain circumstances
• Delaware — Age 18
• Hawaii — Age 18, unless the child is still in high school
• Idaho — Age 18, or until the child graduates from high school
• Kentucky — Age 18, or until the child graduates from high school if still attending
• Louisiana — Age 18, or until the child graduates from high school or turns 19
• Maine — Age 18, or until the child graduates from high school if still attending
• Michigan — Age 18, or until the child graduates from high school (up to age 19 and 6 months)
• Minnesota — Age 18, or until the child graduates from high school (up to age 20 if still in secondary school)
• Missouri — Age 18, or until the child graduates from high school or turns 21 if enrolled in college
• Montana — Age 18, or until the child graduates from high school if attending at 18
• Nevada — Age 18, or until the child graduates from high school if still attending
• Oklahoma — Age 18, or until the child graduates from high school
• Oregon — Age 18, or until the child turns 21 if still in school or a training program
• South Dakota — Age 18, or until the child graduates from high school or turns 19
• Utah — Age 18, or until the child graduates from high school if still attending
• Vermont — Age 18
• Washington — Age 18, or until the child graduates from high school
• West Virginia — Age 18, or until the child graduates from high school if attending at 18
• Wisconsin — Age 18, or until the child graduates from high school or turns 19
• Wyoming — Age 18, or until the child graduates from high school if still attending

States With Age 19 or Graduation Provisions

Many states extend child support to age 19 or until the child graduates from high school, whichever comes first. This is the most common extension and reflects the reality that many children do not turn 18 until after their senior year of high school has begun.

• Alabama — Age 19
• Arkansas — Age 18, or until the child graduates from high school or turns 20 if still in high school
• California — Age 18, or until the child graduates from high school, turns 19, or marries/dies, whichever occurs first
• Florida — Age 18, or until the child graduates from high school or turns 19, whichever occurs first
• Georgia — Age 18, or until the child graduates from high school, turns 20, marries, dies, or joins the military
• Iowa — Age 18, or until the child graduates from high school or turns 21 if in college (limited circumstances)
• Kansas — Age 18, or until the child graduates from high school if still attending
• Mississippi — Age 21, unless the child is emancipated earlier
• Nebraska — Age 19
• New Hampshire — Age 18, or until the child graduates from high school or turns 21 for post-secondary education
• North Carolina — Age 18, or until the child graduates from high school
• North Dakota — Age 18, or until the child graduates from high school or turns 19 if still in school
• Ohio — Age 18, or until the child graduates from high school if attending at 18
• Rhode Island — Age 18, or until the child graduates from high school
• South Carolina — Age 18, or until the child graduates from high school
• Tennessee — Age 18, or until the child graduates from high school, unless still in high school and making satisfactory progress toward graduation
• Texas — Age 18, or until the child graduates from high school. Support also ends if the child marries, joins the military, or is emancipated.
• Virginia — Age 18, or until the child graduates from high school, turns 19, or is emancipated

States Where Support Extends to 21

A smaller number of states extend child support well beyond the age of majority, typically to age 21. These states may provide for college support or continued support for children who are still in school.

• Connecticut — Age 18, or until the child graduates from high school. Courts may order support through age 23 for post-secondary education.
• District of Columbia — Age 21
• Indiana — Age 19, but courts may order support for college expenses through age 23
• Maryland — Age 18, or until the child graduates from high school. Courts may extend support through age 21 for certain circumstances.
• Massachusetts — Age 18, but courts commonly order support through age 21, and up to age 23 if the child is enrolled in an educational program
• Mississippi — Age 21, unless the child is emancipated earlier through marriage, military service, or court order
• New Jersey — Age 19, but support can extend to age 23 if the child is a full-time student
• New Mexico — Age 18, or until the child graduates from high school or turns 19. Courts may extend support through age 21 for post-secondary education.
• New York — Age 21. New York is one of the few states where the default age of support termination is 21.
• Pennsylvania — Age 18, or until the child graduates from high school. Support can extend to age 23 for post-secondary education in some circumstances.

Graduation-Based Termination

Many states use a hybrid approach where support continues until the child either reaches a specified age or graduates from high school, whichever comes first. This ensures that a child who turns 18 during their junior or senior year of high school does not lose financial support before completing their basic education.

States with graduation-based provisions typically require the child to be enrolled full-time and making satisfactory academic progress. If the child drops out of high school, support may terminate at age 18 regardless. Some states also require the child to be living with a parent or guardian and not emancipated.

The burden of proving that the child is still in school usually falls on the custodial parent who is receiving support. If you are the paying parent and believe the child has dropped out or is not making satisfactory progress, you can request verification from the school or file a motion to terminate support.

Exceptions and Special Circumstances

College and Post-Secondary Education

While most states do not automatically require parents to pay college expenses, a significant number allow courts to order post-secondary educational support. States like Connecticut, Indiana, Massachusetts, New Hampshire, New Jersey, New York, Oregon, Pennsylvania, and Washington have provisions for college support orders. In other states, parents can agree to pay college expenses as part of their divorce or custody settlement, and that agreement is enforceable by the court.

College support orders typically cover tuition, room and board, books, and fees. Courts usually limit the obligation to a specific amount (such as the cost of a state university) or a specific duration (such as four years of undergraduate study). The child is generally required to maintain a minimum GPA and enroll as a full-time student.

Disabled Children

Children with physical, mental, or developmental disabilities may be entitled to child support indefinitely. If the disability prevents the child from becoming self-supporting, courts in virtually every state can order continued support beyond the age of majority. The specific standard varies: some states require that the child be "incapacitated" or "incompetent," while others use a broader standard of inability to be self-supporting.

For disabled children, the court will typically consider the nature and severity of the disability, the child's earning capacity, the availability of government benefits, and both parents' financial resources. Support orders for disabled adult children may be reviewed periodically to assess whether circumstances have changed.

Emancipation

A child may become emancipated before the age of majority, which can terminate the child support obligation early. Emancipation typically occurs when the child:

• Gets married
• Joins the military on active duty
• Is declared emancipated by a court (usually based on financial independence)
• Moves out and becomes self-supporting

Emancipation is not automatic in most situations. The paying parent must typically file a motion to declare the child emancipated and provide evidence supporting the claim. The court will hold a hearing and make a determination based on the evidence presented.

Extending Support Beyond the Age Limit

If you are a custodial parent and believe support should continue beyond the standard age limit, you must take action before the existing order expires. Options include:

1. File a motion for extension: Request that the court extend the support order based on applicable grounds, such as the child's continued enrollment in school or a disability.
2. Negotiate an agreement: Work with the other parent to reach an agreement on continued support. If the other parent agrees, the court can incorporate the agreement into a new order.
3. Seek college support: If your state allows it, file for post-secondary educational support before the current order terminates.

Timing is critical. Once a support order terminates by its own terms, it can be very difficult to reinstate. Consult with a family law attorney well in advance of the termination date to preserve your options.

Terminating Support Early

If you are a paying parent and believe support should end before the standard age limit, you may be able to file for early termination under certain circumstances:

• Emancipation: If the child has moved out, is self-supporting, married, or joined the military
• Failure to enroll in school: If continued support is conditioned on school enrollment and the child has dropped out
• Reconciliation: If the child has moved in with you full-time
• Death of the child: Support terminates upon the death of the child

Do not simply stop making payments. You must obtain a court order terminating or modifying the support obligation. Until the court modifies the order, you remain legally obligated to pay, and failure to pay will result in arrears. For more information about what happens when payments stop, see our article on what happens if child support is not paid.

How to File for Termination

To terminate child support, follow these general steps:

1. Review your support order: Check the specific terms of your existing order. It may include a termination date or conditions for termination.
2. Gather documentation: Collect evidence supporting termination, such as the child's birth certificate (showing age), high school diploma or graduation records, marriage certificate, military enlistment records, or other relevant documents.
3. File a motion with the court: Submit a motion or petition to terminate child support with the court that issued the original order. Many states have specific forms for this purpose.
4. Serve the other parent: The other parent must be served with notice of your motion and given an opportunity to respond.
5. Attend the hearing: Be prepared to present your evidence at a hearing. If the other parent contests the termination, the judge will hear both sides.
6. Obtain the court order: If the court grants your motion, make sure you receive a written order terminating support. Provide a copy to your employer (if your wages are garnished) and to the state child support enforcement agency.

Some states allow for administrative termination through the child support enforcement agency without a court hearing, particularly when the termination date is clearly stated in the original order. Contact your local child support office to find out if this option is available.

For a detailed understanding of how child support is calculated in your state, visit our state-specific pages for Texas, California, Florida, and New York, or use our child support calculator to estimate your obligation.