When Does Child Support End in Louisiana: Age, Exceptions, and Disabilities

Child support in Louisiana ends automatically when the child turns 18 in most cases. The obligation can stretch to age 19 if the child is still a full-time high school student in good standing, to 22 for a developmentally disabled child who remains in secondary school, and potentially for life for a child with an intellectual or physical disability that appeared before 18. When child support ends in Louisiana depends less on your calendar and more on how your order was written and what the child is doing at the time.¹

The Default Rule: Age 18

Louisiana’s age of majority is 18.² If your support order sets a specific dollar amount per child, the obligation for each child ends automatically when that child turns 18 or becomes emancipated, whichever comes first. You do not need to file a motion. You do not need a new court order. Payment simply stops for that child.¹

This is where many paying parents get caught off guard. If your order is written “in globo,” meaning a single combined amount for two or more children rather than a separate figure for each, nothing comes off the top when the oldest child turns 18. The full amount keeps running until the youngest child covered by the order reaches 18 or is emancipated. Only then does the order terminate on its own.¹

If you have an in globo order and want it reduced as each child ages out, you have to file a motion to modify under Louisiana Revised Statutes 9:311 and show a material change in circumstances. Pull out your order and check how it’s written before you count on the per-child rule.

If the Child Is Still in High School

A child who turns 18 while still in high school does not age out of support that day. Louisiana extends the obligation for an unmarried child who is a full-time student in good standing at a secondary school, has not yet turned 19, and remains dependent on a parent. Support then ends at graduation or the 19th birthday, whichever comes first.¹

“Good standing” is doing work here. A child who has dropped out or been expelled does not qualify, and neither does one who has married. Either the custodial parent or the child can go back to court if the paying parent stops before the extension runs out.

Emancipation Ends Support Early

A minor who is legally emancipated before 18 is treated as an adult for support purposes, and the obligation terminates at that point. Louisiana recognizes two routes.

Judicial Emancipation

A court can grant full or limited emancipation to a minor who is at least 16, if there is good cause.³ The distinction matters for support. Full emancipation relieves the child of all the disabilities of minority and ends the support obligation. Limited emancipation grants only the specific rights listed in the judgment and may or may not end support, depending on what the order actually gives the minor.

Emancipation by Marriage

A 16- or 17-year-old who marries becomes fully emancipated by operation of law. This emancipation cannot be undone, even if the marriage later ends in divorce or annulment.⁴ Because the emancipation is full, child support terminates automatically under the same provision that ends support at majority.¹

Extensions for Children With Disabilities

Louisiana has two separate provisions for extending support past 18 when a child has a disability. They cover different situations and have different limits. Both generally require a motion filed with the court before the child reaches majority or is emancipated, though the second one has an exception.

Developmental Disability: To Age 22, While in School

If a child has a developmental disability as defined in Louisiana law, the court can order continued support until the child turns 22, as long as the child remains a full-time student in a secondary school. The custodial parent or legal guardian can enforce the order.¹ Once the child graduates or leaves secondary school, this extension no longer applies.

Intellectual or Physical Disability: Potentially Indefinite

A broader extension exists for an unmarried child with an intellectual or physical disability that appeared before age 18. If the child cannot support themselves and needs substantial care and personal supervision because of that disability, the court can order continued support with no age cap.⁵ The statute explicitly excludes substance abuse and addiction from counting as qualifying disabilities.

Unlike the other extensions, an initial support action under this provision can be filed regardless of the child’s current age. A parent can seek a first-time order even after the child has turned 18. The court can also consider the child’s eligibility for public benefits and can direct that support be paid into a trust.⁵

College Does Not Extend Support

Louisiana courts cannot order a parent to pay child support through college. The high school extension references “a secondary school or its equivalent,” and no separate statute authorizes court-ordered support for university or college expenses.¹

Parents can voluntarily agree to split college costs, and a court can enforce a written agreement that includes higher education. Without that agreement, a Louisiana judge has no power to make one parent fund the other’s college tuition through a support order. If college funding matters, build it into the divorce agreement rather than counting on a judge to add it later.

Unpaid Support Survives the End Date

Termination of the ongoing obligation does not wipe out what you already owe. If arrears exist when support ends, that debt remains fully enforceable, and the court keeps its power to collect and to hold a delinquent parent in contempt.⁶

Federal law tightens this further. Under the Bradley Amendment, 42 U.S.C. § 666(a)(9), every past-due child support payment becomes a judgment by operation of law on the date it was originally due, and no state court can retroactively reduce or cancel it.⁷ The only narrow exception is that a court may adjust the amount for periods during which a modification petition was already pending, and only from the date notice of that petition was served. If you’ve fallen behind, the balance will follow you regardless of how old the child is now.

Changing the Amount Before It Ends

Circumstances shift. A parent can file to modify support with the court that issued the original order, but Louisiana requires proof of a material change in circumstances that is both substantial and continuing since the last award.⁸ Job loss, a significant pay change, serious illness, or a major shift in the child’s needs can all qualify.

When the Louisiana Department of Children and Family Services is providing enforcement, there is a rebuttable presumption of a material change if applying the current guidelines would yield at least a 25 percent swing from the existing amount. The court can still deny the modification if applying the guidelines would not serve the child’s best interest.⁸

One thing courts will not accept as a reason to lower support going forward: a judgment for past-due amounts. Falling behind is not itself grounds for a reduction.

1
Justia. Louisiana Revised Statutes Title 9 RS 9-315.22 – Termination of Child Support Upon Majority or Emancipation; Exceptions
2
Justia. Louisiana Civil Code Article 29 – Age of Majority
3
Louisiana State Legislature. Louisiana Civil Code Article 366 – Judicial Emancipation
4
Louisiana State Legislature. Louisiana Civil Code Article 367 – Emancipation by Marriage
5
Justia. Louisiana Revised Statutes Title 9 RS 9-315.22.1 – Support for Disabled Children
6
Louisiana State Legislature. Louisiana Revised Statutes Title 46 – Child Support Enforcement
7
Office of the Law Revision Counsel. 42 USC 666 – Requirement of Statutorily Prescribed Procedures to Improve Effectiveness of Child Support Enforcement
8
Justia. Louisiana Revised Statutes Title 9 RS 9-311 – Modification or Suspension of Support