Form FL-100: Petition—Marriage/Domestic Partnership (Family Law)
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Form FL-100, Petition—Marriage/Domestic Partnership (Family Law), is the Judicial Council of California form that starts a divorce, legal separation or annulment for married couples and registered domestic partners. The current revision is January 1, 2020, and it is filed together with a Summons (form FL-110) — plus a UCCJEA declaration (FL-105) when there are minor children — for a $435 first-paper fee on the 2026 statewide schedule, or with a fee waiver (FW-001). It records the residence requirement, the dates of marriage and separation, the children, the legal grounds and every order you are asking for: custody and parenting time, child support, spousal support, separate and community property, attorney fees and a former name. With JustFill you open the official three-page PDF in your browser, type into every field and checkbox, and the first clean completed download is included at no charge; you then file it with the court yourself.
Starting a California divorce? FL-100 (current revision January 1, 2020) is the first paper you file, always paired with the Summons (FL-110), and JustFill turns the official three-page Judicial Council PDF into a fillable form in your browser. Filing also starts the clock: the earliest a divorce can be final is six months and one day after the respondent is served with the Summons and Petition (or files a Response), while legal separation has no waiting period. 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.
The official FL-100 PDF (revision January 1, 2020, three pages) is free from the Judicial Council of California at courts.ca.gov/documents/fl100.pdf; every county court's self-help center links the same file. There is no separate FL-100 instruction booklet — the guidance sheet is Legal Steps for a Divorce or Legal Separation (form FL-107-INFO), and the items are explained on this page. The court PDF is fillable in Acrobat; if you would rather not install anything, upload it to JustFill to complete every item and checkbox on screen, download the finished petition (the first clean completed download is included at no charge), print it and file it with the Summons (FL-110) at the superior court of the county where you meet the residence requirement.
Get the official FL-100 PDF from Judicial Council of CaliforniaWhat 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.
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.
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.
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.
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.
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).
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.
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.
A self-represented petitioner in Sacramento County files for divorce after a ten-year marriage with one minor child. Both spouses have lived in California and in the county for years. She asks for joint legal custody, guideline child support, spousal support reserved, community property divided on a Property Declaration, and her former name restored.
Dissolution (Divorce) of: ☑ Marriage · 1a ☑ We are married.
Tick one line at the top (divorce, legal separation or nullity) and then the relationship in item 1. Items 1b and 1c are only for registered domestic partners.
2a ☑ Petitioner ☑ Respondent — resident of California for at least six months and of Sacramento County for at least three months before filing
For a divorce at least one spouse must meet it (unless the partnership was registered in California, item 1b). Checking both is fine when both qualify.
(1) Date of marriage: 06/20/2015 · (2) Date of separation: 03/01/2026 · (3) Time from marriage to separation: 10 Years 8 Months
The date of separation fixes when community property stops accruing, so give the actual date rather than an approximation. Item 3b is the equivalent block for a domestic partnership.
4b ☑ Sam Doe · 09/12/2018 · Age 7 · 4d: Declaration Under UCCJEA (form FL-105) attached
Item 4d requires a completed FL-105 whenever there are minor children of both parties. Give the age on the filing date; use Attachment 4b if the children do not fit.
5a ☑ Divorce · (1) ☑ irreconcilable differences
The no-fault ground almost every California divorce uses. Check one basis only; 5b and 5c are nullity grounds for void or voidable marriages.
6a Legal custody: Joint · 6b Physical custody: Petitioner · 6c Parenting time to: Respondent · As requested in ☑ form FL-311
The petition only names who gets what; the actual schedule goes on FL-311 or one of the FL-341 attachments.
7a–7c are notices, nothing to tick · 7d Other: blank · 8c ☑ Reserve for future determination the issue of support payable to ☑ Petitioner
Child support is set later on request with financial forms (FL-150); the petition just keeps the issue open. Reserving spousal support keeps the court's power to award it; ticking 8b instead ends that right for good.
9a ☑ There are no such assets or debts that I know of to be confirmed · 10b ☑ Determine rights to community and quasi-community assets and debts, listed in ☑ Property Declaration (form FL-160)
Assets can go on the form itself, on FL-160 or on an attachment; FL-160 is the usual choice once a house, cars and retirement accounts are involved.
11b ☑ Petitioner's former name be restored to: JANE M ROE · 11a and 11c blank
Asking here means the judgment restores the name without a separate proceeding. 11a is where you would ask the other side to pay attorney fees.
12 read and acknowledged · Date 09/14/2026 · JANE M DOE typed, signed on the petitioner line; attorney line blank
Item 12 confirms you have read the standard family law restraining orders on page 2 of the Summons (FL-110); they bind both parties from filing. Self-represented petitioners leave the attorney signature empty.
These values are made up. They are here to show what belongs on each line, not to be copied — every name, number, and address on your own FL-100 has to be your own.
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Form FL-110: Summons (Family Law)
Form FL-120: Response—Marriage/Domestic Partnership (Family Law)
Form FL-150: Income and Expense Declaration
Form FW-001: Request to Waive Court Fees
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Official source: FL-100 on Judicial Council of California’s website
Edition checked: FL-100 [Rev. January 1, 2020] — Form Adopted for Mandatory Use, Judicial Council of California, 3 pages. Verified against the official source on .
Form FL-100 is published by the Judicial Council of California. JustFill is not affiliated with the Judicial Council or any California court.
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