When child support ends, by state

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The court can order support for an adult child with a disability under A.R.S. 25-320(E). Support also ends if the child marries, is adopted or dies.

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Support can continue for an adult child who is disabled and cannot support himself or herself, or if the parents agree. Support also ends if the child marries, enters a domestic partnership, joins the military, is emancipated or dies.

Support can continue past 19 for a child with a mental or physical disability, or if the parents agree in writing. Support ends earlier if the child marries, enters a civil union, joins active military duty or is found emancipated.

A court can order support for an adult child with an intellectual, mental or physical disability who lives with and depends on a parent: up to age 26 for orders entered on or after October 1, 2023, or up to 21 for earlier orders.

Support can also end if custody of all the children is transferred to the paying parent by court order or written agreement.

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A court can order support past 18 for a child whose mental or physical incapacity began before age 18.

Support also ends if the child marries, dies or is emancipated.

Orders usually also end support on death, emancipation or other listed events. For an adult child in school, the custodial parent must send CSEA proof of full-time enrollment every term, or CSEA stops collecting current support.

The guidelines do not cover support for education after high school (I.R.F.L.P. 120(a)).

Support can continue past 18 for a child found permanently disabled before age 18. A court can order help with college expenses under a separate law, but CSS does not handle college-expense orders.

Support continues for an incapacitated child during the incapacity, by court order. A court may end support earlier if the child joins active military duty, is not under a parent's care, or is at least 18, out of school for 4 months and able to self-support.

Support can be ordered for a child of any age who is dependent because of a physical or mental disability. Iowa courts can no longer order a postsecondary education (college) subsidy for orders entered or pending on or after July 1, 2025.

Parents can agree in a court-approved written agreement to pay support past 18. In a Kansas order, support automatically goes down as each child emancipates (for example, by one-third when one of three children turns 18).

Support can last longer if the parents agree in writing or the decree says so. Unpaid support that built up before the child was emancipated is still owed.

Support continues to age 22 for a child with a developmental disability who is a full-time high school student. Support can continue indefinitely for a child who cannot support themselves because of an intellectual or physical disability that showed up before age 18; the motion must be filed before the child turns 18 for a minor child.

An order also ends if the child marries or joins the armed services.

Maryland law requires a parent who has or can earn enough money to provide food, shelter, care and clothing for a destitute adult child, meaning an adult child with no means of support who can't support themselves because of a mental or physical infirmity.

The court may order support from 18 to 21 if the child lives in a parent's home and depends mainly on that parent, and from 21 to 23 if the child also is enrolled in an educational program (not beyond an undergraduate degree).

Support after 18 beyond this is enforceable only if the parents agreed to it. The order must name the last month of support.

Support can continue for a child who cannot support themselves because of a physical or mental condition.

Support ends automatically earlier if the child marries, joins the military full time, or is sentenced to two or more years for a felony.

Support can continue past 18 for a child who is physically or mentally unable to support themselves and is insolvent and unmarried.

Support can continue past 19 for a child with a disability who is financially dependent on the custodial parent, when that parent is the primary caregiver.

Support also ends if the child marries, dies, or is emancipated by a court, unless the order specifically extends it. Past-due support is still owed after support ends.

A parent must support a child with a handicap (a disability that began before adulthood and prevents substantial gainful activity) beyond 18 until the child is no longer handicapped or becomes self-supporting.

New Hampshire
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Support can continue past 19 (but generally not past 23) if the child is still in high school, attends full-time college, vocational or graduate school, or has a disability.

Support can continue past the usual age for a severely disabled child; courts decide case by case.

Parents can agree to support beyond 21. A parent can also be ordered to support an adult child with a developmental disability up to age 26 if the child lives with and depends mainly on the parent asking for support.

Support ends earlier if the child is emancipated (for example by marriage, military service or court order). A child in a cooperative innovative high school program can be supported until the later of age 18 or completing the fourth year.

The court may order support past 18 if the parents agree or the court finds it appropriate. The receiving parent files a declaration with Child Support to continue support for a high school student; there is no fee.

A court can order support past 18 (and past 19) for a child with a mental or physical disability who cannot self-support, or when the parents agreed to it in a divorce or dissolution agreement.

A court can order support for an indefinite period for an adult child with a mental or physical disability that began before 18 and who cannot support himself or herself.

Support also ends if the child marries or is emancipated. A Child Attending School must notify the program and the paying parent and can lose support if a paying parent's objection is not answered.

Support can continue for an adult child who cannot care for himself or herself (for example, because of special needs), or when the parents agreed to pay longer.

The court may order support past that point for a child with a severe physical or mental impairment who still lives with or is cared for by a parent, if the disability began before emancipation.

Support can continue past 18 under an earlier agreement or order, or at the court's discretion for a child with a physical or mental disability or other exceptional circumstances.

If the court decides support survives a parent's death, the amount can be changed or turned into a lump sum.

A court can continue support for a child with a disability (as defined by the Americans with Disabilities Act) until age 21, and for a severely disabled child who lives with a parent, for as long as the court finds is in the child's best interest, if the disability began before 18.

Support can continue indefinitely for a disabled child who needs substantial care and cannot support themself, if the disability existed before age 18.

Support can continue at any age for a child who is incapacitated from earning a living and cannot support themself. Support ends earlier if the child marries, joins the U.S. armed forces, becomes self-supporting or is emancipated.

Parents can agree to add an amount for college (postsecondary education) to the order; the court does not order it on its own.

The court may order support past 18 for a child who is severely and permanently disabled (disability began before 18, or before 19 for a high school student), cannot live independently and lives with the parent receiving support.

The court may order postsecondary (college or vocational) support for a dependent child, usually not past the 23rd birthday except for exceptional circumstances such as disability; the child must stay enrolled and in good standing and share grades with both parents.

Support for a disabled adult child is governed by existing West Virginia case law. College support cannot be ordered for orders entered after March 14, 1994.

Past-due support can still be enforced up to 20 years after the youngest child turns 18.

A parent's duty continues past 18 for a child who is mentally or physically disabled and cannot support themself. Support also ends if the parents marry each other, or the child dies or is emancipated.