If you're thinking about divorce in California, you may have heard that something changed on January 1, 2026. California now offers a Joint Petition for divorce — and at West Coast Family Mediation, we've already made it our default starting point for mediation clients. Here's what it is, how it differs from the traditional process, and why it matters for couples who want to move forward together.
What Is the Joint Petition?
For a very long time, the only way to start a divorce in California was through what I’m now going to refer to as the Traditional Petition. One spouse — the Petitioner — files the paperwork, and the other spouse — the Respondent — gets formally "served." Even if you and your spouse have agreed to divorce amicably, the traditional process still requires this formal service of process, which can feel unnecessarily adversarial. It's a holdover from an era when divorces were contested by default. Even though in mediation we usually did service by mail, it still felt like the antithesis of what mediation is.
The Joint Petition changes that. Starting January 1, 2026, both spouses can file together as Co-Petitioners. There's no Petitioner and no Respondent. There's no one being "served." You're simply two people who have decided to end their marriage and are filing that paperwork together.
Both paths lead to the same legal destination — a Dissolution of Marriage or Legal Separation — but the experience of getting there can be meaningfully different.
The Key Differences
The most practical difference is timing. Under the traditional process, California's mandatory six-month waiting period doesn't begin until the Respondent has been formally served. Depending on how quickly that happens, you could lose weeks or months before the clock even starts.
With the Joint Petition, the six-month clock begins the moment the petition is filed. Because both spouses are filing together, there's nothing to serve and no response required. That waiting period — which is the minimum time before a divorce can be finalized in California — starts immediately.
Here's a quick comparison on the key differences
| Traditional Petition | Joint Petition | |
|---|---|---|
| Who files | One spouse against the other | Both spouses together |
| Tone | Formal; can feel adversarial | Collaborative; signals agreement to work together |
| When the clock starts | After Respondent is served | Immediately upon filing |
| Timeline impact | Potentially weeks or months slower | As fast as the court can file |
Why We Use the Joint Petition as Our Default
At West Coast Family Mediation, we've made the Joint Petition our default starting point for a simple reason: it reflects what mediation actually is.
When two people come to us, they've already decided to work together toward a resolution. They're not adversaries. Requiring one of them to formally "serve" the other on a process they've both agreed to participate in doesn't make sense — and it can introduce an unnecessary emotional sting at an already tender moment. I've seen clients who were doing beautifully in mediation become suddenly tense after the service of process step because they feel like it’s become a fight and they’re unsure whether they need an attorney. It can feel like the beginning of a fight, even when it isn't.
The Joint Petition removes that friction entirely. It starts where mediation starts: with the understanding that you're on the same side of the table.
The Benefits of Filing Together
Beyond the symbolic shift, the Joint Petition offers real practical advantages:
The process moves faster. By skipping formal service and the waiting period before the clock starts, couples who use the Joint Petition can reach finalization sooner — assuming the mediation itself proceeds efficiently.
It can be less expensive. Fewer procedural steps mean fewer billable hours spent on logistics. In a flat-fee mediation process like ours, you still pay the same — but for clients working with attorneys outside of mediation, they’ll have less court documents to review since there’s no response that has to be filed.
It sets a better tone. How you begin a divorce affects how you navigate it. Starting with a Joint Petition signals to both of you — and to the legal system — that this is a cooperative process. That mindset tends to carry through the harder conversations about property, support, and parenting.
A Note on Who This Is For
The Joint Petition works well for couples who are both committed to the mediation process and are filing in good faith together. It may not be appropriate in high-conflict situations or where one spouse has concerns about the other's transparency or cooperation. If you're unsure whether this approach is right for your situation, that's exactly the kind of question to bring into your first meeting — it's one of many places where having an attorney-mediator in your corner makes a real difference.
California's new Joint Petition is a meaningful step toward making divorce less adversarial by design. If you and your spouse are ready to move forward together, it's one more tool that makes the mediation path not just the more collaborative choice — but the faster, more efficient one too.
If you have questions about the Joint Petition or how it fits into the mediation process, reach out to us at West Coast Family Mediation. We're happy to walk you through what to expect.