People searching for California's divorce laws often want a simple answer to a simple question: does someone have to be at fault to get divorced here. The short answer is no. This guide covers what "no-fault" actually means under California law and what it does not mean.
Key Takeaway: California is a no-fault divorce state. Under Family Code Section 2310, a divorce can be granted for "irreconcilable differences," without either spouse proving the other did anything wrong. You do not need your spouse's agreement, and there are no separate forms or a different process for a "fault-based" case, because California does not have one.
Is California a No-Fault Divorce State?
Yes. Under Family Code Section 2310, dissolution of marriage or legal separation can be granted based on either of two grounds, both of which are pleaded generally on the Petition, without a factual trial over who caused the breakup:
- Irreconcilable differences, which have caused the irremediable breakdown of the marriage
- Permanent legal incapacity to make decisions
Irreconcilable differences is the ground used in the overwhelming majority of California cases. It does not require either spouse to show the other was unfaithful, cruel, or otherwise at fault.
Because California is a no-fault state, you also do not need your spouse's agreement to file. One spouse can start a divorce case even if the other spouse does not want the marriage to end, and the case can proceed to a final judgment even if the other spouse never responds.
What Does "Irreconcilable Differences" Mean as Legal Grounds?
"Irreconcilable differences" is intentionally broad. It covers any reasons the marriage has broken down beyond repair, without the court examining or ruling on who was to blame. You state on the Petition (Form FL-100) that the marriage should end because of irreconcilable differences, and the court does not require proof of specific misconduct like adultery or abandonment to grant the divorce on that basis. There is no checklist of qualifying reasons you have to match; the standard is simply that the marriage has broken down beyond repair, in your own assessment as the filing spouse.
This is different from older fault-based systems, where a spouse historically had to prove grounds like cruelty or desertion before a court would grant a divorce. California moved away from that model in favor of the no-fault standard used today.
The current text of Family Code Section 2310, including its exact grounds language, was last amended effective January 1, 2015. That update did not change the underlying no-fault standard. It refined the wording around the second, much rarer ground, permanent legal incapacity to make decisions, which is used far less often than irreconcilable differences.
Do You Have to Prove Fault to File?
No. Because irreconcilable differences is a no-fault ground, you do not need to present evidence of wrongdoing, such as an affair or abuse, simply to get the divorce granted. You also do not need your spouse's consent, since one spouse filing is enough to start the case regardless of whether the other spouse wants the marriage to continue.
That does not mean conduct never matters anywhere in a California family law case. Facts like domestic violence can still affect separate issues, such as custody and restraining orders, and financial misconduct, like hiding assets, can affect how property is divided or how a court orders reimbursement. None of that changes the grounds for the divorce itself, which remain irreconcilable differences whether or not either spouse's conduct comes up elsewhere in the case.
What This Means for Filing Your Case
Practically, being a no-fault state means every California dissolution case follows the same starting point, regardless of why the marriage ended:
- You file the same Petition, Form FL-100, and check irreconcilable differences as the ground
- You still need to meet California's residency requirement: 6 months in the state and 3 months in your filing county, with some exceptions for registered domestic partnerships
- The court filing fee is the same regardless of the stated ground, generally $435 to $450 depending on the county, with a fee waiver available if you qualify
- The same no-fault standard applies to a request for legal separation, not just a full divorce
- Your spouse does not have to sign anything or respond for your case to move forward; if they do not respond, the case can proceed by default
None of this changes based on why the marriage ended. Whether the case is straightforward or contested over property, support, or custody, every California dissolution follows the same four-part structure: starting the case, sharing financial information, making decisions about property and children, and finalizing the judgment. The no-fault ground you check on the Petition does not add or remove any of those steps.
Frequently Asked Questions
Is California a no-fault divorce state?
Yes. Under California Family Code Section 2310, a divorce (dissolution) can be granted based on irreconcilable differences that have caused the irremediable breakdown of the marriage, without either spouse having to prove the other did anything wrong. California does not require fault-based grounds like adultery or cruelty to get divorced.
What are the legal grounds for divorce in California?
Family Code Section 2310 lists two grounds: irreconcilable differences, which have caused the irremediable breakdown of the marriage, and permanent legal incapacity to make decisions. Irreconcilable differences is the standard, no-fault ground used in the vast majority of California divorce filings.
Does my spouse have to agree to the divorce?
No. Because California is a no-fault state, you do not need your spouse's agreement or consent to file for divorce, and you do not need to prove they did anything wrong. One spouse can start the case even if the other does not want the marriage to end.
Does California's no-fault rule apply to legal separation too?
Yes. The same grounds under Family Code Section 2310, including irreconcilable differences, apply to a request for legal separation, not just a divorce (dissolution). Legal separation and divorce use the same court forms and the same no-fault standard; the difference is that legal separation keeps the marriage legally intact.
Are there California no-fault divorce forms, or different forms for fault-based cases?
There are no separate "fault" divorce forms in California. Every dissolution case starts with the same Petition, Form FL-100, where you select irreconcilable differences (or, rarely, permanent legal incapacity) as the ground. You do not attach evidence of wrongdoing to start the case.
Does a no-fault divorce cost less than a fault-based one?
California does not offer a fault-based alternative, so there is no cost comparison to make. Every dissolution case pays the same court filing fee, generally $435 to $450 depending on the county, regardless of the reason stated on the Petition. A fee waiver is available for those who qualify.
How Virdix Helps
Because California is a no-fault state, every dissolution case starts the same way: the same Petition, the same grounds, and the same forms. Virdix walks you through filling out Form FL-100 and the rest of your California divorce paperwork in plain language, so you do not have to figure out the process on your own. Visit the California divorce hub for the full process overview.
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This article is for informational purposes only and does not constitute legal advice. Virdix is a document preparation service, not a law firm, and does not provide legal advice. For advice about your specific situation, consult a licensed California family law attorney.
Sources: California Family Code Section 2310 (leginfo.legislature.ca.gov), California Courts Self-Help Center (selfhelp.courts.ca.gov).