Starting in 2025, California family courts will adopt a major change in how parenting time is handled: a new legal presumption that equal or significantly shared custody is in a child’s best interest. For many families navigating divorce or separation, this could reshape expectations—and legal strategies—around child custody.
What changed in California custody law?
Under the previous law, judges had broad discretion to determine custody based on the child’s best interest, with no legal preference for shared parenting time. But effective January 1, 2025, California Family Code § 3040 has been amended to include a rebuttable presumption that joint physical custody is in a child’s best interest.
This means courts must start with the assumption that children benefit from spending substantial time with both parents—unless evidence proves otherwise.
Why this shift toward shared parenting?
The law reflects a growing body of research showing that children thrive emotionally, socially, and academically when both parents remain actively involved in their lives. California joins a national trend favoring co-parenting frameworks that prioritize ongoing relationships with both parents.
What does this mean for custody cases?
If you’re preparing for a custody hearing or filing a parenting plan in 2025 or later, here’s what the new presumption means:
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Shared physical custody is the default arrangement unless there’s strong evidence that another arrangement better serves the child’s best interests.
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Evidence of abuse, neglect, or substance misuse can still rebut the presumption of equal time.
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Judicial discretion still exists—courts will examine the unique facts of each case before finalizing any orders.
Families with complex dynamics may require additional documentation or expert input to support their parenting time requests.
For context, refer to our guide on modifying child custody orders in California.
How should parents prepare for this change?
If you’re going through a divorce or revisiting your custody arrangement, consider:
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Proactively proposing a shared custody plan that reflects the new standard.
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Demonstrating parental fitness through consistent involvement in the child’s life.
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Mediating or negotiating a co-parenting agreement before trial.
The new law doesn’t eliminate conflict—but it encourages parents to collaborate in ways that align with the child’s developmental needs.
To learn more, visit our Child Custody & Visitation page.
FAQ: CA Shared Custody Law in 2025
Does 50/50 custody mean exactly equal time?
Not necessarily. Courts aim for substantial time with both parents, but schedules may vary based on logistics, age, and schooling.
Can I still get sole custody?
Yes, but you must present compelling reasons—such as evidence of harm or instability by the other parent.
Does this affect existing orders?
No, but parents can petition to modify current orders based on the new legal presumption.
📞 Have questions about these new California family law changes?
• Our team is here to help you understand how these reforms might impact your case.
• Contact Cullen Family Law Group today to schedule your confidential consultation.