Dennis Quaid's $13,750 Child Support Filing Reveals a Costly California Trap
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 twins graduated high school. The case underscores a critical California rule: child support never ends automatically — the paying parent must file a motion to stop payments, or they keep accruing.
Key Facts
| Detail | Information |
|---|---|
| What happened | Dennis Quaid filed to terminate child support and prorate bonus support |
| When | Filed May 2026, after twins graduated May/June 2026 |
| Where | California (Los Angeles County family court) |
| Who's affected | Quaid, ex-wife Kimberly Buffington, their 18-year-old twins |
| Key statute | Cal. Fam. Code § 3901 (support termination age) |
| Practical impact | Reminder that support requires a motion to end, not automatic cutoff |
Source reporting via TMZ indicates Quaid sought to end the $13,750/month obligation and prorate income-based 'bonus' support to the graduation dates.
Why This Matters Legally
Child support in California does not terminate automatically when a child graduates or turns 18. The paying parent must file a motion with the court to formally end the obligation. Under Cal. Fam. Code § 3901, the duty to support a child continues until the child turns 18, or until 19 if the child is still a full-time high school student and not self-supporting — whichever comes first.
This distinction matters because an existing support order remains legally enforceable until a judge modifies or terminates it. If Quaid had simply stopped paying after the twins graduated, he would have continued accruing arrears that California courts cannot retroactively forgive. Under Cal. Fam. Code § 3651, a support order can only be modified or terminated as to amounts accruing after the date the modification motion is filed and served. Stopping payments without a court order creates a debt, not a clean exit.
For high earners like Quaid, support orders often include a base amount plus a percentage of bonus or fluctuating income — what California practitioners call a Smith-Ostler order. These income-based 'bonus' components require their own accounting and proration, which is why Quaid's filing reportedly sought to prorate that portion to the graduation dates rather than the calendar year-end.
How California Law Handles Support Termination
California treats child support termination as a court-driven process, not a self-executing event. Three statutes control the analysis.
First, Cal. Fam. Code § 3901 sets the termination age. Support ends when an unmarried child reaches 18, unless the child is a full-time high school student living at home and not self-supporting — in which case support extends to the earlier of high school graduation or age 19. For twins graduating in May or June 2026, this is the operative trigger Quaid is invoking.
Second, Cal. Fam. Code § 3651 governs modification timing. A California court cannot retroactively reduce or terminate support before the date a proper motion is filed and served on the other parent. This is the anti-arrears rule: if you wait six months after graduation to file, you may owe six months of support you never needed to pay.
Third, for parents with multiple children under one order, Cal. Fam. Code § 4055 — California's statewide guideline formula — does not automatically recalculate when one child ages out. With twins graduating together, Quaid's situation is cleaner. But where children age out at different times, the remaining support is not simply the per-child fraction; the court must run a new guideline calculation under the formula.
California courts apply the section 4055 guideline as a rebuttable presumption of the correct support amount. Roughly 70% of California child support cases resolve using this formula without significant deviation, according to California Department of Child Support Services data.
Practical Takeaways
If you are paying California child support and your child is approaching 18 or high school graduation, take these steps:
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File a termination motion before you stop paying. Under Cal. Fam. Code § 3651, support cannot be reduced retroactively before your filing date. Do not assume graduation ends the order.
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Calculate the correct termination date. Support runs to the earlier of graduation or the child's 19th birthday under Cal. Fam. Code § 3901. Confirm the exact graduation date in writing from the school.
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Address bonus or percentage income separately. If your order includes a Smith-Ostler component tied to bonuses or fluctuating income, prorate it to the termination date. This often requires a separate accounting motion.
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Recalculate, don't just subtract, when one of several children ages out. The Cal. Fam. Code § 4055 guideline does not split evenly per child. A new calculation is required for the remaining children.
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Keep paying until the judge signs the order. The existing order remains enforceable until modified. Unilateral stoppage creates arrears the court cannot forgive.
Frequently Asked Questions
Does California child support end automatically at 18?
No. California child support does not end automatically. Under Cal. Fam. Code § 3901, support continues until age 18, or until age 19 if the child remains a full-time high school student living at home. The paying parent must file a motion to terminate the order; otherwise it stays enforceable.
What happens if I stop paying after my child graduates without filing?
You accrue arrears. Under Cal. Fam. Code § 3651, California courts cannot retroactively forgive support that accrued before your modification motion was filed and served. Stopping payments without a court order converts the obligation into an enforceable debt, potentially with 10% statutory interest on unpaid amounts.
How is 'bonus' child support handled when a child ages out?
Bonus or percentage-based support, known as a Smith-Ostler order, must be prorated separately to the termination date. Dennis Quaid reportedly sought to prorate his income-based bonus support to the twins' 2026 graduation dates rather than year-end, requiring a distinct accounting calculation under his order.
What if I have multiple kids and only one graduates?
The court must recalculate support using the Cal. Fam. Code § 4055 statewide guideline. Support does not simply drop by one child's share. The formula considers both parents' incomes and timeshare, so the remaining amount per child often changes when one child ages out.
How quickly should I file to terminate California child support?
File before or immediately when the qualifying event occurs. Because Cal. Fam. Code § 3651 bars retroactive relief before the filing date, every month of delay can cost you a full month of unnecessary support — for Quaid, that delay could mean $13,750 per month.
Need California Family Law Guidance?
If you are facing a child support termination, modification, or arrears question in California, a qualified family law attorney can confirm your exact filing date, calculate any bonus support proration, and protect you from accruing avoidable arrears.
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.