Actor Dennis Quaid, 72, filed a petition in May 2026 to terminate his $13,750 monthly child support to ex-wife Kimberly Buffington after their 18-year-old twins, Zoe and Thomas, graduated high school in late May and early June 2026, according to TMZ. The case underscores a rule every California parent should know: child support never terminates automatically — a formal court motion is always required, even when the legal basis for ending support is clear.
Key Facts
| Detail | Summary |
|---|---|
| What happened | Dennis Quaid petitioned a California court to end $13,750/month child support |
| When | Filed May 2026, after twins graduated late May/early June 2026 |
| Where | California (jurisdiction over the 2018 dissolution) |
| Who's affected | Quaid, ex-wife Kimberly Buffington, twins Zoe and Thomas (age 18) |
| Key statute/rule | Cal. Fam. Code § 3901 — support continues to age 19 or 12th-grade completion |
| Impact | Confirms California support requires a formal motion to terminate |
Why this matters legally
California child support does not end on its own — a parent must file a formal motion to terminate or modify the obligation, and the support continues accruing until a court signs an order changing it. This is the single most expensive misunderstanding in California family law. Dennis Quaid's 2026 petition, reported by TMZ, illustrates the procedure precisely: even though his twins reached the legal endpoint for support by graduating high school at 18, his $13,750 monthly obligation does not stop until a judge enters an order. A paying parent who simply stops sending payments — assuming the duty has ended — accumulates enforceable arrears that cannot be retroactively erased.
How California law handles this
Under Cal. Fam. Code § 3901, a parent's duty to support a child continues until the child turns 18, or until 19 if the child is a full-time high school student and not self-supporting — whichever comes first. The statute terminates support upon the earlier of the child's 19th birthday or completion of 12th grade. Quaid's 2018 settlement mirrored this statute by tying termination to each twin completing 12th grade while remaining under 19 and enrolled full-time.
The enforcement mechanism comes from Cal. Fam. Code § 3651, which allows courts to modify or terminate support orders but generally prohibits retroactive modification before the date a motion is filed and served. This is why timing matters: support can only be terminated back to the filing date, not the graduation date. If Quaid had waited months to file after his twins graduated, he would have remained liable for every monthly payment in the interim. Filing promptly in May 2026, as the graduations occurred, protected him from accumulating obligations he no longer legally owed.
California courts calculate child support using the statewide guideline formula in Cal. Fam. Code § 4055, which weighs each parent's net income and timeshare. High-earner cases like Quaid's often involve negotiated amounts above guideline, set by stipulation in the dissolution judgment. The $13,750 monthly figure reflects a high-income arrangement, but the termination rules apply identically regardless of the dollar amount — the same § 3901 endpoint governs a $500 order and a $13,750 order alike.
Practical takeaways
If your child support obligation is approaching its legal endpoint, treat the Quaid case as a checklist:
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File a motion before you stop paying. Never assume support ends automatically. Continue payments until a judge signs a termination order, because unpaid amounts become arrears under Cal. Fam. Code § 3651.
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Calendar the graduation and 19th-birthday dates. Support ends at the earlier of high school completion or age 19 under Cal. Fam. Code § 3901. Know both dates for each child.
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File promptly to preserve your termination date. Courts generally cannot modify support retroactively before your filing date, so a delayed motion costs you money for every month you wait.
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Account for staggered children. If you have multiple children on one order, support does not drop when the oldest ages out — the order must be recalculated or the obligation continues at the full amount until you file.
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Keep proof of enrollment. The age-19 extension applies only to full-time high school students. Retain school records documenting graduation or enrollment status.
Frequently Asked Questions
Does child support automatically end when a child graduates high school in California?
No. California child support never ends automatically. Under Cal. Fam. Code § 3901, a parent must file a formal motion to terminate the obligation. Support continues accruing until a judge signs an order, even after the child turns 18 or completes 12th grade in 2026.
When exactly does child support end under California law?
Child support ends at the earlier of the child's 19th birthday or completion of 12th grade, per Cal. Fam. Code § 3901. For an 18-year-old high school graduate, support terminates upon graduation. The extension to age 19 applies only to full-time, non-self-supporting high school students.
Can a California court terminate child support retroactively to the graduation date?
No. Under Cal. Fam. Code § 3651, California courts generally cannot modify support before the date the motion was filed and served. Support terminates back to the filing date, not the graduation date, which is why prompt filing protects paying parents from unnecessary arrears.
What happens if I stop paying child support without a court order?
Unpaid child support becomes enforceable arrears that accumulate interest at 10% annually under California law and cannot be retroactively erased. Even if your child has graduated, stopping payments before a court signs a termination order exposes you to collection actions, wage garnishment, and license suspension.
Does child support drop automatically when the oldest of multiple children ages out?
No. With multiple children on a single California order, support does not decrease automatically when one child ages out. The paying parent must file a motion to recalculate under Cal. Fam. Code § 4055, or the full obligation continues until a court modifies the order.
Need help with a California support termination?
If your child support obligation is nearing its legal endpoint, an experienced California family law attorney can file the termination motion correctly and protect you from accumulating arrears. Browse our directory to find an exclusive family law attorney in your county.
This article discusses recent news and provides general legal commentary. It does not constitute legal advice. Every case is unique. Consult a qualified family law attorney for advice specific to your situation.