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Yes! You can use AI to fill out Form FL-105/GC-120, Declaration Under Uniform Child Custody Jurisdiction and Enforcement Act (UCCJEA)

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Form FL-105/GC-120, Declaration Under Uniform Child Custody Jurisdiction and Enforcement Act (UCCJEA), page 1

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What this form asks for

The AI fills all of it, from your answers or your documents.

Form FL-105/GC-120 is a mandatory California Judicial Council form used in legal proceedings involving child custody, such as divorce, legal separation, or guardianship. It provides the court with essential information about a child's residence history for the past five years and details any other custody proceedings in any state, which is crucial for determining the proper court jurisdiction under the Uniform Child Custody Jurisdiction and Enforcement Act (UCCJEA). Today, this form can be filled out quickly and accurately using AI-powered services like Instafill.ai, which can also convert non-fillable PDF versions into interactive fillable forms.

The AI checks your answers before you download

13 checks built for this form, so a wrong date or a missing answer is caught before anyone else sees it.

Declarant Status Selection

Validates that in section 1, the user has selected exactly one checkbox, indicating whether they are a party to the proceeding or an authorized representative of an agency. This is a mandatory field to establish the declarant's standing. If no selection is made, the form is incomplete and cannot be processed.

Child Count Consistency

Ensures the number entered in the first sentence of section 2 matches the actual number of children listed in the table below (2a, 2b, 2c, etc.). This check prevents discrepancies between the stated number of children and the detailed information provided. A mismatch could lead to confusion and legal challenges regarding which children are subject to the proceeding.

Child's Age Verification

Validates that the 'Date of birth' provided for each child in section 2 results in an age of less than 18 years at the time of form submission. The UCCJEA applies specifically to minor children. This check confirms the court's jurisdiction under this act and prevents the inclusion of individuals who are legally adults.

Child Information Completeness

Verifies that for every child listed in section 2, all required fields ('Full Name', 'Date of birth', 'Place of birth') are filled out. Incomplete information for any child can delay proceedings, as the court requires full identification for all minors involved. This validation ensures each child's record is complete before submission.

Residence History Logic

Checks the logical consistency of selections in section 3. If the number of children in section 2 is one, box 3a must be checked. If the number of children is greater than one, either box 3a (if they lived together) or 3b (if they did not) must be checked, but not both. This ensures the correct residence history path is followed based on the case's specific circumstances.

Five-Year Residence Chronology

Validates the residence history provided in section 3a. It checks that the date ranges are sequential, do not have significant gaps, and collectively cover the last five years. It also ensures that for each entry, the 'From' date is chronologically before the 'To' date. This is critical for the court to establish the child's 'home state' and determine jurisdiction.

And 7 more checks
  • Conditional Other Case Details
  • Protective Order Expiration Date
  • Conditional Other Custody Claims
  • Custody Claim Type Selection
  • Attachment Count Consistency
  • Declaration Date Validity
  • Case Number Format

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How to Fill Out FL-105/GC-120 Online for Free in 2026

What the AI walks you through.

  1. Navigate to Instafill.ai and upload Form FL-105/GC-120 or select it from the form library.
  2. Provide your personal details, attorney information (if applicable), and the specific court and case information in the header section.
  3. List the full name, date of birth, and place of birth for each minor child subject to the proceeding.
  4. Detail the residence history for each child over the past five years, including dates, addresses, and the names of the people they lived with.
  5. Disclose any information about other court cases or custody proceedings concerning the children, including family law, probate, juvenile, or domestic violence restraining order cases.
  6. Identify any individuals not party to the case who have or claim to have custody or visitation rights with the children.
  7. Review all the information populated by the AI for accuracy, then electronically sign and date the declaration under penalty of perjury.

Common Mistakes in Completing FL-105/GC-120

The ones the AI is built to catch.

Providing an Incomplete 5-Year Residence History
In Item 3, filers often fail to provide a continuous, uninterrupted five-year address history for each child, leaving gaps between dates. The court requires a complete timeline to establish jurisdiction. Any gaps can lead to the form being rejected, causing significant delays in the case. To avoid this, carefully list every residence in chronological order, ensuring the 'From' date of a new residence immediately follows the 'To' date of the previous one, with no time unaccounted for.
Failing to Disclose All Other Court Cases
In Item 4, individuals frequently forget or neglect to list all prior or ongoing court cases concerning the children, including family law, juvenile dependency, guardianship, or adoption proceedings. This omission can be seen as a misrepresentation to the court and can negatively impact the filer's credibility. It is crucial to disclose every case, even if it was brief or dismissed, and provide all requested details like the case number and court location. AI-powered tools like Instafill.ai can help store and recall this information for future filings.
Forgetting the Signature and Date
The most critical and surprisingly common mistake is failing to sign and date the declaration at the bottom of page 2. An unsigned or undated form is legally invalid and will be immediately rejected by the court clerk, halting all progress on the case. Always double-check that you have physically or electronically signed and dated the form before submitting it. This simple oversight is the number one cause of preventable filing rejections.
Incorrectly Identifying the Case Parties
The form's header has separate sections for standard family law cases ('PETITIONER'/'RESPONDENT') and probate cases ('GUARDIANSHIP OF'). People often get confused and fill out the wrong section or both. This creates ambiguity and can lead to the document being filed incorrectly. Carefully identify the type of case you are in and only complete the relevant section for the case name.
Omitting Address Details for Persons Listed in Residence History
When completing the residence history in Item 3, filers must list the 'Person child lived with and complete current address.' A common error is to only write the person's name (e.g., 'Jane Doe') without their full current address. The court requires this address to potentially contact the person for verification. Leaving this information out renders the entry incomplete and can cause the form to be returned for correction.
Improperly Using or Labeling Attachments
The form requires specific attachments for certain situations, such as Form FL-105(A) for children with different residence histories (Item 3b) or labeled attachments for additional children (Item 2). People often submit information on a plain piece of paper without the required heading or fail to use the correct supplemental form. This can result in the attached information being disregarded or the entire filing being rejected for not conforming to the rules. Always use the specified form and label any attachments exactly as instructed.
Misunderstanding the 'Confidential Address' Option
In Item 3, filers sometimes check the 'Confidential' box for a child's address simply because they desire privacy, not because they meet the legal standard under Family Code section 3429, which is typically related to domestic violence or other safety concerns. Improperly claiming confidentiality can lead to judicial scrutiny or requests for justification. This box should only be checked when there is a genuine, legally recognized reason to protect the address information.
Incomplete Child Information in Item 2
People often make simple data entry errors in Item 2, such as forgetting a child's date of birth, omitting the place of birth, or ignoring the instruction to list the oldest child first. While seemingly minor, this incomplete or improperly ordered information slows down court processing as clerks may need to request clarification. Using a tool like Instafill.ai can help prevent these errors by validating that all required fields are filled out correctly before submission.
Failing to Provide Details for Other Parties with Custody Claims
In Item 6, when disclosing other people who have or claim custody/visitation rights, filers often provide a name but neglect to include a complete address. The question is also broadly about anyone who 'claims' rights, not just those with court orders. Omitting the address or failing to list a grandparent who acts as a primary caregiver, for example, makes the declaration incomplete and prevents the court from providing proper notice to all interested parties.
Using an Outdated Version of the Form
Judicial Council forms are updated periodically, as indicated by the revision date in the footer (e.g., '[Rev. January 1, 2025]'). Submitting an obsolete version of the FL-105/GC-120 is a common reason for administrative rejection by the court clerk. Always ensure you are using the most current version available from the official court website. This avoids unnecessary delays and ensures compliance with the latest legal requirements.
Illegible Handwriting on Non-Fillable PDFs
Many court forms are only available as non-fillable PDFs, forcing users to print and complete them by hand. This often results in illegible handwriting for names, dates, and addresses, which can lead to data entry errors by court staff or outright rejection of the form. To avoid this, use block capital letters or utilize a service like Instafill.ai, which can convert a flat PDF into a fillable form, allowing you to type your information clearly and professionally.

Frequently Asked Questions About FL-105/GC-120

 

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Can I fill other forms too?
This plan is for your FL-105/GC-120: your own AI agent fills it as often as 5 times a month. To fill other forms and upload your own, choose a Professional plan from your account.
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How does the AI fill out FL-105/GC-120?
You answer a few questions in plain words, or upload a document you already have. The AI reads what you give it and puts each answer into the right field of FL-105/GC-120, on every page, in seconds. It checks the answers against the form's own rules, and you review and change anything before you download, print or sign.
What happens to my information?
It is encrypted in transit and at rest, and it is never used to train AI.
What is the purpose of the UCCJEA Declaration (Form FL-105/GC-120)?
This form provides the court with essential information about the children in your custody case, including where they have lived for the past five years. It helps the court decide if it has the legal authority, or jurisdiction, to make orders about your children.
Who is required to fill out this form?
Every party in a court case involving child custody, such as a divorce, parentage action, or probate guardianship, must complete and file their own separate UCCJEA Declaration.
What information do I need to list for my child's residence history in Item 3?
You must provide a five-year history of every place the child has lived, starting with their current residence. For each location, you need to list the dates, the city and state, and the name and relationship of the person the child lived with.
What if I have more than one child and they didn't always live together?
If your children have not lived together for the entire past five years, you must check the box in Item 3b. You will then need to attach form FL-105(A)/GC-120(A) to provide the separate five-year residence history for each child.
How do I protect my child's address if I have safety concerns?
If your address is confidential due to safety concerns or a protective order, you can check the 'Confidential' box in Item 3. You will only need to provide the state where the child lives, not the full street address.
What should I do if I know about other court cases involving my child?
In Item 4, you must disclose any other court case concerning the child's custody, such as family, juvenile, or adoption proceedings, from any state. You should provide the case number and court information, and attach copies of any court orders if you have them.
Do I need to list restraining orders on this form?
Yes, in Item 5, you must report any active domestic violence restraining or protective orders involving you, the child, or the other party. Provide the case number and expiration date, and attach a copy of the order if possible.
What does it mean to have a 'continuing duty to inform the court'?
This is a legal requirement stating that after you file this form, you must notify the court if you learn any new information about other custody proceedings in any court that involve your child.
What if someone who isn't part of the case, like a grandparent, has the child?
In Item 6, you must list the name and address of any person not officially a party to the case who has physical custody of the child or claims custody or visitation rights.
Where do I file the completed UCCJEA Declaration?
You must file the signed, original form with the court clerk at the Superior Court where your case is filed. You also need to ensure a copy is served on the other party or their attorney.
Can AI help me fill out this form?
Yes, services like Instafill.ai use AI to help you accurately auto-fill form fields, which can save time and reduce errors. The AI can pull information from your case file or previous documents to populate the form.
How can I use Instafill.ai to fill out this form online?
Simply upload the FL-105/GC-120 form to the Instafill.ai platform. The service will make the form fillable and guide you through the questions, using AI to suggest information and ensure all required fields are completed correctly.
The PDF version of the form I found isn't fillable. What can I do?
If you have a non-fillable or 'flat' PDF, you can upload it to a service like Instafill.ai. Their technology can convert the static form into an interactive, fillable version that you can complete easily on your computer.
What do I do if I run out of space to list all my children or their addresses?
The form instructs you to use an attachment if you need more space. You can use a separate piece of paper, label it clearly (e.g., 'FL-105, Attachment 2'), include the case information, and attach it to your declaration.
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child custody forms: Form 12.995(c), Safety-Focused Parenting Plan, Form FL-341(E), Child Custody and Visitation (Parenting Time) Application Attachment, Florida Supreme Court Approved Family Law Form 12.902(d), Uniform Child Custody Jurisdiction and Enforcement Act (UCCJEA) Affidavit, Florida Supreme Court Approved Family Law Form 12.941(a), Petition for Enforcement of Out-of-State Custody Decree and for Order to Pick Up Minor Child(ren), Form DV-105, Request for Child Custody and Visitation Orders (Domestic Violence Prevention), Form DV-140, Child Custody and Visitation Order (Domestic Violence Prevention), form-fl-105gc-120-declaration-under-uniform-child-custody-jurisdiction-and-enforcement-act-uccjea-1, Uniform Child Custody Jurisdiction Enforcement Act Affidavit, Florida Supreme Court Approved Family Law Form 12.905(a), Supplemental Petition to Modify Parental Responsibility, Visitation or Parenting Plan / Time-Sharing Schedule and Other Relief, Florida Supreme Court Approved Family Law Form 12.995(a), Parenting Plan, Form DV-305, Request to Change Child Custody and Visitation Orders (Domestic Violence Prevention), Form ICWA-030, Notice of Child Custody Proceeding for Indian Child (Indian Child Welfare Act), Form FL-260, Petition for Custody and Support of Minor Children, Form FL-270, Response to Petition for Custody and Support of Minor Children, Affidavit Regarding Minor Children (Superior Court of Arizona in Maricopa County), Joint Legal Decision-Making Education Order, Sole Legal Decision-Making Education Order, Exhibit: Out-of-State Party Declaration (Form FM-OSP-302), Standard Possession Order, Counter-Petition to Modify the Parent-Child Relationship

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