Many parents assume child support automatically ends when a child turns 18. In California, that’s not always the case.

There are several situations where child support may continue into adulthood.

1. High School Students Over 18

Child support continues if the child is:

• Unmarried
• A full-time high school student
• Not self-supporting

In this situation, support typically continues until:

• The child graduates high school, or
• Turns 19 (whichever comes first)

Importantly, courts do not require the child to graduate as quickly as possible—support continues as long as they meet the criteria.

2. Adult Children With Disabilities

Support may continue indefinitely if an adult child:

• Is unable to earn a living due to a physical or mental condition
• Does not have sufficient financial resources

In these cases, courts can order ongoing support to ensure the child’s needs are met.

3. Support by Agreement

Parents can also agree to extend support beyond legal requirements.

A common example is:

• Agreeing to help pay for college expenses

However, courts generally cannot order college support unless both parents agree to it.

Key Takeaway

Child support doesn’t always end at 18. The specific facts of your case—especially education and special needs—can significantly affect how long support lasts.

Get Legal Advice About Extended Child Support

If your child is approaching adulthood, it’s important to understand whether support will continue.

A family law attorney can help you:

• Determine if extended support applies
• Modify or enforce an existing order
• Navigate agreements for college or other expenses

If you have questions about your obligations or rights, professional guidance can help you avoid costly mistakes.