Post-Majority Child Support for Disabled Adult Children in Arizona: Understanding Mendoza v. Mendoza

Tue 27th Dec, 2016 Arizona Child Support Laws

When most parents think about child support in Arizona, they assume the obligation ends when a child turns 18 or graduates from high school. While that is generally true, Arizona law recognizes an important exception for adult children with mental or physical disabilities who cannot support themselves.

The Arizona Court of Appeals clarified this exception in Mendoza v. Mendoza. This landmark decision confirmed that Arizona courts may order post-majority child support for disabled adult children—even when a parent did not request that support during the original divorce proceedings.

If you have questions about child support for a disabled adult child, understanding the Mendoza decision can help you better understand your legal rights.

Does Child Support End at Age 18 in Arizona?

Under Arizona law, a parent’s legal obligation to pay child support generally ends when the child reaches the age of majority. In most cases, that means support terminates when the child turns 18 or graduates from high school if still attending.

Historically, Arizona courts lacked authority to order child support after a child reached adulthood.

However, the Arizona Legislature recognized that some adult children remain financially dependent because of significant physical or mental disabilities. As a result, lawmakers created an exception that allows courts to order continued support in appropriate cases.

Arizona’s Law on Post-Majority Support for Disabled Adult Children

Arizona Revised Statutes § 25-320(B) authorizes courts to order child support beyond the age of majority for mentally or physically disabled children when appropriate.

Originally, however, the statute was interpreted narrowly.

In Provinzano v. Provinzano, the Court of Appeals held that a court could only “continue” support if it had already acquired jurisdiction before the child turned 18. This interpretation prevented many families from seeking assistance after the child reached adulthood.

Recognizing this limitation, the Arizona Legislature amended A.R.S. § 25-320(B) in 1980.

The amended statute specifically provides that courts may order support for a disabled adult child even if the child has already reached the age of majority when the petition is filed or when the divorce decree is entered.

This legislative change became the central issue in Mendoza v. Mendoza.

The Facts of Mendoza v. Mendoza

Mr. and Mrs. Mendoza divorced in 1985 after having twin children during their marriage.

The divorce decree required Mr. Mendoza to pay child support until the twins reached age 18.

The twins turned 18 in 1991. Although Mr. Mendoza continued making occasional support payments for a period of time, the payments became irregular and eventually stopped altogether.

In 1992, Mrs. Mendoza filed a petition requesting additional support for the twins because of their disabilities.

Mr. Mendoza asked the court to dismiss the case, arguing that the family court no longer had jurisdiction because the children were already adults.

The trial court agreed and dismissed the petition.

Mrs. Mendoza appealed.

The Arizona Court of Appeals Expands Protection for Disabled Adult Children

The Arizona Court of Appeals reversed the trial court’s decision.

The appellate court carefully examined the Legislature’s 1980 amendment to A.R.S. § 25-320(B) and concluded that lawmakers intended to expand—not restrict—the court’s authority.

As a result, Arizona courts have jurisdiction to consider requests for post-majority support for disabled adult children even when:

The original divorce decree did not include post-majority support.
The child has already turned 18 before the petition is filed.
The request is made years after the divorce.

Why Mendoza v. Mendoza Still Matters Today

Mendoza v. Mendoza remains an important Arizona child support decision because it confirms that courts retain authority to order financial support for disabled adult children who remain financially dependent on a parent.

The decision ensures that families are not automatically denied support simply because:

A child has already reached adulthood.
The original divorce decree did not address post-majority support.
A petition is filed after the child turns 18.

Instead, Arizona courts focus on the child’s disability, ongoing needs, and the statutory factors governing child support.

Seeking Post-Majority Child Support in Arizona

Parents caring for disabled adult children often face significant financial challenges. Medical expenses, specialized care, housing, and ongoing supervision can continue long after a child reaches adulthood.

Arizona law recognizes these realities by allowing courts to order continued support in appropriate cases.

If you believe your adult disabled child may qualify for post-majority child support, it is important to consult with an experienced Arizona family law attorney who can evaluate your circumstances, explain your legal options, and guide you through the court process.

Arizona Child Support Attorneys

The attorneys at Hildebrand Law have extensive experience handling complex Arizona child support matters, including cases involving disabled adult children and post-majority support. If you have questions about your rights under Arizona law or need assistance pursuing or defending a child support claim, contact our office to schedule a consultation and discuss your legal options.

Our family law firm has earned numerous awards such as US News and World Reports Best Arizona Family Law Firm, US News and World Report Best Divorce Attorneys, “Best of the Valley” by Arizona Foothills readers, and “Best Arizona Divorce Law Firms” by North Scottsdale Magazine.

Call us today at (480)305-8300 or reach out to us through our appointment scheduling form to schedule your personalized consultation and turn your Arizona child support or family law case around today.

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