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FL-100Mandatory

Petition—Marriage/Domestic Partnership (Family Law)

California · Judicial Council of California · Effective January 1, 2020

This form is used to start a case asking the court to end a marriage, domestic partnership, or to legally separate. It asks the filer to state the facts about the relationship and what orders they want the court to make.

The court describes it as: Start a divorce, legal separation, or annulment case if you are married, registered domestic partners, or both. This identifies all the issues you want to include in a judgment.

Open the official PDFfrom Judicial Council of California

Where this fits in a case

Start a case

Stage: Start a case

This form is used when a person wants to start a legal case to end a marriage, domestic partnership, or to legally separate from a spouse or partner.

Usually filed by the person starting the case.

Official instructions

How-to guides published by the court for this form.

Common questions

What is this form for?
This form is a Petition used to start a case for divorce, legal separation, or annulment of a marriage or domestic partnership.
Who fills out this form?
The form is filled out by the petitioner, which is the person starting the case.
Does this form cover everything?
It asks the petitioner to list all the issues they want included in the final court judgment.

Revision history

No changes recorded since we started tracking this form on October 9, 2026. The current version took effect January 1, 2020.

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