Judicial Council of California · United States

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Form FL-100: Petition—Marriage/Domestic Partnership (Family Law)

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Quick answer

Form FL-100 is the Petition—Marriage/Domestic Partnership adopted for mandatory use by the Judicial Council of California. It is the document that starts a divorce, legal separation or annulment for married couples and registered domestic partners, and it identifies every issue you want included in the judgment: custody and parenting time, child support, spousal support, separate property, community property and other requests such as restoring a former name. With JustFill you upload the blank FL-100 PDF, the AI auto-detects every field and checkbox, and you download the completed petition free.

Form
FL-100
Issued by
Judicial Council of California
Country
United States
Cost to fill
Free

What is FL-100?

Starting a California divorce? FL-100 is the first paper you file, and JustFill turns the official three-page Judicial Council PDF into a fillable form in your browser. It rests on Family Code sections 297, 299, 2320, 2330 and 3409. Item 1 states your legal relationship. Item 2 covers the residence requirement — six months in California and three months in the county. Item 3 records the statistical facts: date of marriage or registration, date of separation, and the time between them in years and months. Item 4 lists minor children. Item 5 states the legal grounds. Items 6 to 11 are your actual requests: custody, child support, spousal support, separate property, community property, attorney fees and a former name. Item 12 confirms you have read the restraining orders printed on the back of the summons.

Who fills out FL-100?

  • A spouse starting a divorce, legal separation or annulment in California
  • A registered domestic partner ending a partnership registered in California
  • Same-sex couples married in California who now live where the marriage will not be dissolved
  • Self-represented petitioners filing without a lawyer
  • Anyone amending an earlier petition — the form has an AMENDED checkbox

Field-by-field breakdown

What each section of FL-100 asks for. JustFill’s AI will detect these fields automatically when you upload the PDF — review the breakdown below so you know what to enter.

Item 1 — legal relationship

Whether you are married, domestic partners registered in California, or domestic partners registered elsewhere. Check all that apply — the answer changes which residence rule applies to you.

Item 2 — residence requirements

That the petitioner or respondent has lived in California at least six months and in the county at least three months immediately before filing. If your domestic partnership was registered in California, neither of you has to be a California resident to dissolve it here.

Item 3 — statistical facts

Date of marriage or of registering the partnership, date of separation, and the elapsed time stated in years and months. Two separate blocks, one for marriage and one for registration.

Item 4 — minor children

Each child’s name, birthdate and age, or a statement that there are none. A child not yet born is checked separately. If there are minor children, a completed UCCJEA declaration (form FL-105) must be attached.

Item 5 — legal grounds

Divorce or legal separation on irreconcilable differences or permanent legal incapacity to make decisions; or nullity of a void marriage (incest, bigamy) or a voidable one (age at registration, prior existing marriage, unsound mind, fraud, force, physical incapacity).

Items 6–8 — custody, child support, spousal support

Legal custody, physical custody and parenting time, each assigned to petitioner, respondent, joint or other, with the detail set out in FL-311, FL-312, FL-341(C), FL-341(D), FL-341(E) or an attachment. Then child support, and spousal or partner support: payable to, terminated, or reserved for later determination.

Items 9–11 — property and other requests

Separate property to be confirmed and community and quasi-community property to be divided, either listed on the form or on a Property Declaration (form FL-160); then attorney fees, restoration of a former name, and anything else.

Common mistakes to avoid

  • 1Filing before meeting the residence requirement. Six months in the state and three months in the county, immediately preceding the filing.
  • 2Leaving the date of separation blank or approximate. It drives what counts as community property.
  • 3Forgetting to attach the UCCJEA declaration (form FL-105) when there are minor children — item 4 says it must be attached.
  • 4Listing children on the form and nowhere else. If they do not fit, the form directs you to Attachment 4b.
  • 5Checking both irreconcilable differences and a nullity ground. Item 5 asks you to check one basis.
  • 6Skipping item 12. It confirms you have read the standard restraining orders on the back of the summons, and they bind you from the moment you file.
  • 7Leaving Social Security numbers visible. The form notes you may black them out on anything except a support-collection form.

How JustFill helps you complete FL-100

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Frequently asked questions

The summons (form FL-110), and — if there are minor children — the UCCJEA declaration (form FL-105). If you cannot afford the filing fee, add a fee waiver request (form FW-001).
For a divorce, at least one of you must have lived in California for six months and in the county for three months immediately before filing. A domestic partnership registered in California is an exception.
Item 3 asks for it because it marks the end of the period in which earnings and debts are generally community property.
Yes. Item 12 confirms you have read them, and the standard family law restraining orders bind both parties from filing until the judgment or a further order.
The form has an AMENDED checkbox at the top for filing an amended petition.

Official source: FL-100 on Judicial Council of California’s website

Form FL-100 is published by the Judicial Council of California. JustFill is not affiliated with the Judicial Council or any California court.

JustFill is an independent product and is not affiliated with, endorsed by, or sponsored by Judicial Council of California or any government agency. Always verify your completed form on the official version before signing or submitting.