Effective January 1, 2026, California couples pursuing collaborative or amicable divorces can file a single Joint Petition for Dissolution under the Judicial Council's new FL-100-JOINT form, eliminating the traditional petitioner/respondent designation. The change, announced by Collaborative Divorce California, applies statewide across all 58 Superior Courts and reframes uncontested dissolutions as cooperative legal events rather than adversarial proceedings.
Key Facts
| Item | Detail |
|---|---|
| What happened | California adopted a Joint Petition for Dissolution procedure |
| Effective date | January 1, 2026 |
| Jurisdiction | All 58 California Superior Courts |
| Who's affected | Spouses and registered domestic partners pursuing collaborative/amicable divorces |
| Key statute | Cal. Fam. Code § 2330; Judicial Council Form FL-100-JOINT |
| Practical impact | Eliminates petitioner/respondent labels; reduces filing fees and default-risk pitfalls |
Why This Matters Legally
The Joint Petition fundamentally changes the procedural posture of uncontested California divorces. Under the prior rule, one spouse had to file a Petition (FL-100) as "Petitioner" and serve the other as "Respondent," triggering a 30-day response deadline under Cal. Fam. Code § 2020 and creating default-judgment risk if the respondent failed to answer. The new joint procedure removes that adversarial framing entirely — both spouses sign the same petition, eliminating service requirements and the 30-day response clock.
This matters because roughly 70% of California divorces are uncontested by the time judgment is entered, yet the current forms force couples into litigation-style labels that contradict the cooperative reality of their case. The Judicial Council's 2024 invitation-to-comment memo identified this mismatch as a driver of unnecessary conflict, legal fees, and procedural errors, particularly among self-represented litigants who make up approximately 80% of California family law filers.
How California Law Handles Joint Dissolution
California is a no-fault community property state under Cal. Fam. Code § 2310, which authorizes dissolution based solely on "irreconcilable differences." The new joint petition preserves every substantive requirement of a standard dissolution: the six-month waiting period under Cal. Fam. Code § 2339 still applies, meaning the earliest judgment date remains six months plus one day after both spouses sign. Community property must still be divided equally (50/50) under Cal. Fam. Code § 2550, and mandatory financial disclosures under Cal. Fam. Code § 2104 and § 2105 remain in effect — both spouses must exchange a Preliminary Declaration of Disclosure (Form FL-140) within 60 days of filing.
The procedural streamlining is significant. Instead of paying two filing fees (currently $435–$450 in most counties, depending on local surcharges), joint petitioners pay a single filing fee. There is no service of process, no proof of service required, no default entry, and no separate Response form (FL-120). The case proceeds directly to judgment once the six-month clock runs and the parties submit their Marital Settlement Agreement and Judgment packet (FL-180).
Joint petitions are available only where both spouses agree on every material issue: property division, debts, spousal support, child custody, and child support. If a disagreement emerges mid-case, either spouse can convert the joint petition back to a contested petition under the Judicial Council's conversion procedure, preserving the original filing date for statute-of-limitations purposes.
Practical Takeaways for California Couples
- Confirm full agreement before filing. The joint petition works only when both spouses agree on property division, support, and any custody arrangements. Partial agreement is not enough — file a traditional petition instead.
- Complete financial disclosures anyway. The Cal. Fam. Code § 2104 Preliminary Declaration of Disclosure requirement has not changed. Both spouses must exchange Schedule of Assets and Debts (FL-142) and Income and Expense Declaration (FL-150) within 60 days.
- Budget for the six-month wait. Cal. Fam. Code § 2339 still prohibits entry of judgment until six months plus one day after the petition is filed. Plan health insurance, tax filing status, and housing decisions around that window.
- Use the new form correctly. File FL-100-JOINT (not the original FL-100) with your county Superior Court starting January 1, 2026. Earlier filings must use the traditional petitioner/respondent structure.
- Consider collaborative or mediated divorce. The joint petition pairs naturally with collaborative practice under the California Collaborative Practice Act and with private mediation, both of which produce the full agreement the form requires.
- Get the Marital Settlement Agreement right. Because there is no service, no default, and no separate response, the MSA attached to your judgment is the entire record of what you agreed to. Have it reviewed by a family law attorney before signing.
Frequently Asked Questions
Can we use the Joint Petition if we have minor children?
Yes. California's Joint Petition for Dissolution, effective January 1, 2026, is available to couples with minor children, provided both spouses agree on legal custody, physical custody, parenting time, and child support calculated under the statewide guideline in Cal. Fam. Code § 4055. Disagreement on any custody issue requires a traditional contested petition.
Does the six-month waiting period still apply to joint petitions?
Yes. Cal. Fam. Code § 2339 imposes a mandatory six-month-and-one-day waiting period between the filing date and the earliest possible judgment date, and the new joint procedure does not shorten it. A joint petition filed on January 2, 2026, cannot result in a final judgment before July 3, 2026, regardless of how quickly the paperwork is completed.
How much does filing a Joint Petition cost in California?
Joint petitioners pay a single Superior Court filing fee, typically $435 to $450 in 2026, depending on local surcharges. That saves roughly $435 to $450 compared to the prior procedure, which required the respondent to pay a separate first-appearance fee. Fee waivers under Form FW-001 remain available for low-income filers.
What if we disagree on something after filing the joint petition?
Either spouse may convert the joint petition to a traditional contested case if a disagreement emerges. The original January 2026 filing date is preserved for jurisdictional and statute-of-limitations purposes under Cal. Fam. Code § 2330, and the case continues under standard petitioner/respondent procedures from that point forward.
Do we still need to exchange financial disclosures?
Yes. Both spouses must exchange a Preliminary Declaration of Disclosure — including Schedule of Assets and Debts (FL-142) and Income and Expense Declaration (FL-150) — within 60 days of filing under Cal. Fam. Code § 2104. Failure to disclose community assets can void the judgment years later under Cal. Fam. Code § 2122.
Talk to a California Family Law Attorney
If you and your spouse are considering a joint petition under California's new 2026 procedure, an exclusive family law attorney in your county can review your Marital Settlement Agreement and confirm your financial disclosures meet statutory requirements before you file.
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.