Instafill.ai
7 days free
AI form filling · 45 fields · 1 page · done in seconds

Yes! You can use AI to fill out Form DE-120(P), Proof of Personal Service of Notice of Hearing—Decedent's Estate or Trust

Don't type 45 fields by hand. Tell our AI about yourself, or upload a document you already have, and it fills every field in seconds. You check it, then download, print or sign.

7 days free, then $19.99/month · Cancel anytime
AI fills it, no typingEncrypted, never used to train AICancel in two clicks
Form DE-120(P), Proof of Personal Service of Notice of Hearing—Decedent's Estate or Trust, page 1
Basic · 40/100Form Complexity Index

The AI does the filling. You just check it.

No typing into boxes, nothing to install.

Tell the AI about youAnswer a few questions in plain words, or upload a document you already have. That is all the typing there is.
AI fills every field in secondsIt puts each answer in the right box on every page, checkboxes included.
Check it and downloadReview every field, change anything, then download, print or sign the PDF.

What this form asks for

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

Form DE-120(P), Proof of Personal Service of Notice of Hearing, is a critical legal document used in California probate courts to formally declare that notice of a court hearing has been personally delivered to interested parties in a decedent's estate or trust case. This sworn statement, made under penalty of perjury, confirms the details of the service, ensuring that all legal requirements for notification have been met and that the court proceedings can move forward. 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.
Fillable fields45
Pages1
Form Complexity IndexBasic, 40/100

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.

Case Number Presence and Format

Checks that the 'CASE NUMBER' field is not empty and conforms to the standard format used by California courts. This unique identifier is essential for associating the proof of service with the correct legal case file. A missing or incorrectly formatted case number will cause the document to be rejected or misfiled by the court clerk.

Case Name Completeness

Verifies that a name has been entered in either the 'ESTATE OF' field or the 'IN THE MATTER OF' field. This identifies the specific decedent, trust, or other matter the hearing pertains to. Without this information, the document is ambiguous and cannot be correctly processed for the intended case.

Minimum One Person Served

Ensures that the details for at least one person served (name, address, date, and time) are entered in Section 2. The entire purpose of the form is to provide proof of service, so it is meaningless without at least one recipient listed. A blank service list would render the form invalid and require resubmission.

Valid Service Date

Validates that each 'Date' of service entered in Section 2 is a real, past or present calendar date, and not a future date. This is critical for establishing that service was completed in a timely manner as required by law. An invalid or future date would invalidate the proof of service for that individual.

Valid Service Time Format

Checks that the 'Time' of service for each person served is entered in a recognizable time format (e.g., HH:MM AM/PM). Accurate time documentation is part of a complete proof of service and can be crucial in legal disputes over when service occurred. An invalid format can lead to ambiguity and rejection.

Complete Service Address

Checks that the 'Address where served' field for each person listed in Section 2 is not empty and contains plausible address components like a street, city, and state. A complete address is required to prove that service was made at a specific, verifiable location. An incomplete or missing address undermines the credibility and legality of the service claim.

And 7 more checks
  • Server Status Selection
  • Server Contact Information Presence
  • Server Telephone Number Format
  • Conditional Process Server Registration Details
  • Signature Date Presence and Validity
  • Logical Consistency of Service and Signature Dates
  • Signature Presence Check

Let AI fill out your DE-120(P)

No typing. Every field filled in seconds, checked, ready to sign.

7 days free, then $19.99/month · Cancel anytime

How to Fill Out DE-120(P) Online for Free in 2026

What the AI walks you through.

  1. Navigate to Instafill.ai and upload or select Form DE-120(P) from their library of official documents.
  2. Provide the court case information, including the case number and the name of the decedent's estate or trust.
  3. Enter the server's information, including their name, address, and their status (e.g., registered process server, sheriff, etc.).
  4. List the full name, service address, and the exact date and time of service for each person who was personally served with the notice.
  5. Confirm whether a copy of the petition or other related documents was served along with the Notice of Hearing.
  6. Review all the information populated by the AI for complete accuracy, then have the server e-sign and date the declaration under penalty of perjury.
  7. Download the completed form to print and file with the appropriate California Superior Court handling the probate case.

Common Mistakes in Completing DE-120(P)

The ones the AI is built to catch.

Using an Ineligible Person to Serve Documents
The form's first line states the server must be over 18 and not a party to the cause, meaning they cannot be the petitioner, a beneficiary, or have a direct interest in the estate or trust. This rule is often overlooked, leading people to have a party to the case serve the documents. This mistake renders the service invalid, requiring the process to be repeated correctly, causing significant delays.
Omitting or Incorrectly Stating Case Information
The top-right section for the Case Number and the Estate/Trust Name is critical for the court clerk to file the document in the correct legal case. People often forget to fill this in or copy the information incorrectly from other documents. An incomplete or incorrect case header will lead to the clerk rejecting the filing, halting progress until a corrected form is submitted.
Providing Incomplete Service Details
Section 2 requires the full name, the complete address where service occurred, and the exact date and time of service for each person. A common error is omitting the time of service or providing a vague address. Since personal service can be challenged, this precise information is legally required to prove the service was properly executed, and its absence can weaken the proof or lead to its rejection.
Failing to Sign or Date the Declaration
An unsigned or undated declaration is legally invalid, as it constitutes an unsworn statement. This is one of the most common and critical errors, often happening in the final rush to file paperwork. The court will not accept an unsigned Proof of Service, making it a fatal flaw that requires re-submission and can jeopardize legal deadlines.
Incorrectly Identifying the Server's Status
In Section 4, the server must identify their legal status, such as 'not a registered California process server' or 'a registered California process server'. A friend or non-professional assisting with the service often misunderstands these categories and may check the wrong box. This misrepresentation, even if unintentional, can be problematic on a document signed under penalty of perjury.
Forgetting to Confirm Service of All Documents
Section 3 is a checkbox to confirm that a copy of the petition or other relevant document was served along with the Notice of Hearing. Forgetting to check this box implies that only the notice was served, which is typically insufficient and constitutes improper service. This oversight can force a continuance of the hearing until proper service of all required documents is proven.
Omitting the Server's Personal Information
Section 5 requires the server to provide their own name, address, and telephone number. This information is necessary to identify the person making the sworn declaration. Failing to complete this section makes the form incomplete and can lead to its rejection by the court, as it prevents the court and other parties from being able to identify or contact the server if necessary.
Improperly Using or Referencing Attachments
When more people are served than can fit on the main form, an attachment is necessary. Common mistakes include failing to check the box indicating an attachment is used, or checking the box but forgetting to physically include the attachment (Form DE-120(PA)). This creates a discrepancy where the proof of service is incomplete, which can cause the entire filing to be rejected for not properly accounting for all served parties.
Submitting an Illegible, Handwritten Form
Legal forms demand clarity, but handwritten submissions are often difficult to read. Illegible names, addresses, or dates in Section 2 can lead to data entry errors by the court clerk or challenges to the validity of the service itself. To avoid this, it is best to use a fillable PDF version of the form. If the form is only available as a flat PDF, AI-powered tools like Instafill.ai can convert it into a fillable version, ensuring all entries are clear and legible.
Incorrect Date and Time Formatting
The fields for 'Date and time service made' require specific and accurate information. People sometimes enter just the date, forget to specify AM/PM, or use an inconsistent format. This lack of precision can be a basis to challenge the validity of the service. Using a consistent format like 'MM/DD/YYYY' and 'HH:MM AM/PM' is crucial for creating a clear and defensible record. AI form-filling tools like Instafill.ai can help by automatically formatting dates and times correctly, reducing the risk of human error.

Frequently Asked Questions About DE-120(P)

 

Is it really free for 7 days?
Yes. You pay $0 today. Cancel before Nov 1 and you are never charged. Keep it, and it is $19.99 a month for 5 fills of your DE-120(P).
Can I fill other forms too?
This plan is for your DE-120(P): 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.
How do I cancel?
From your account, in two clicks, any time. No email, no call.
How does the AI fill out DE-120(P)?
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 DE-120(P), 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.
How complex is DE-120(P) to fill out?
DE-120(P) has a Form Complexity Index of 40 out of 100, in the basic tier: 45 fillable fields across 1 page. Instafill.ai's AI fills it in under a minute, with every field there for you to review before you download.
What is the purpose of Form DE-120(P)?
This form, the 'Proof of Personal Service,' is used to prove to the court that a 'Notice of Hearing' for a decedent's estate or trust was successfully hand-delivered to the required individuals. It serves as official evidence that parties were properly notified of an upcoming court date.
Who is supposed to fill out and sign this form?
The person who personally delivered the documents, known as the 'server,' must complete and sign this form. The server must be at least 18 years old and cannot be a party involved in the legal case.
Can I serve the notice myself if I am the petitioner in the estate case?
No, as a party to the case, you cannot serve the legal documents yourself. You must have a neutral third party who is over the age of 18 perform the service and complete this form.
What does 'personal service' mean?
Personal service means the physical, in-person delivery of the court documents directly to the individual being notified. You cannot simply leave it in their mailbox or with a neighbor.
What information do I need for Section 1 of the form?
In Section 1, you must list the full name of each person served, the complete address where the service took place, and the exact date and time the documents were delivered.
What should I do if I served more people than there are lines for on the form?
If you need to list more people than the form allows, check the box in Section 2 and use an attachment. You can use the official 'Attachment to Notice of Hearing Proof of Personal Service' (Form DE-120(PA)/GC-020(PA)) for this purpose.
What does the checkbox in Section 3 mean?
You should check the box in Section 3 if you served a copy of the 'petition or other document' along with the 'Notice of Hearing.' This is often required, as it gives the person the full context for the hearing.
How do I know which box to check in Section 4 about my status?
Select the option that describes your role. If you are an individual serving papers as a favor for a friend or family member, you would likely check 'not a registered California process server.' The other options are for professionals like sheriffs or registered process servers.
What do I do with Form DE-120(P) after it is signed?
After the server signs the form, it must be filed with the court clerk where the probate case is being heard. It should be attached to the original Notice of Hearing as proof of its delivery.
If different people served notices, do we all sign one form?
No, each person who served documents must complete and sign their own separate DE-120(P) form. A single form can only be used to list all the individuals served by one specific server.
Can AI tools help me fill out Form DE-120(P)?
Yes, services like Instafill.ai use AI to accurately auto-fill form fields, which can save time and reduce errors. This is particularly useful for entering repetitive case information.
How can I use Instafill.ai to fill this form out online?
To use Instafill.ai, you upload the DE-120(P) form to their platform. The AI will identify the fillable fields, allowing you to enter the information once and have it populated correctly throughout the document.
The PDF of this form I downloaded is not fillable. What can I do?
If you have a non-fillable or 'flat' PDF, you can use a tool like Instafill.ai. It can convert the document into an interactive, fillable form so you can easily type your information into the fields before printing.
Where do I find the 'ESTATE OF' name and 'CASE NUMBER'?
This information must be copied exactly from other official court documents related to the case, such as the initial petition. It should be entered in the top right section of the form to link it to the correct court file.
Encrypted in transit and at restNever used to train AIDelete your forms any time

Get your DE-120(P) filled out by AI

$0 today. Cancel before Nov 1 and you pay nothing.

Other forms like this one

California state forms: Judicial Council of California Form DE-111, Petition for Probate (Probate—Decedents Estates), DS 1891, Applicant/Vendor Disclosure Statement (State of California Department of Developmental Services), Judicial Council of California Form DE-120, Notice of Hearing—Decedent's Estate or Trust, Judicial Council of California Form DE-120, Notice of Hearing—Decedent's Estate or Trust, Murrieta Police Department Citizen Complaint Form (California Penal Code § 148.6 Advisory Statement), California Department of Social Services, Sworn Statement, State of California Department of Transportation California Civil Rights Laws Certification, State of California Department of Transportation Darfur Contracting Act Certification, Form DOT ADM-0077, State of California Department of Transportation, Contract Requirements, State of California Department of Transportation Subcontractor List, State of California Department of Transportation, Certified DVBE Summary, Bidder Declaration GSPD-05-105, State of California Level of Care Rate Determination Protocol Matrix, State of California Accessible Form, State of California Form SOC 321, Request for Order and Consent - Paramedical Services, State of California Darfur Contracting Act Certification, State of California Department of Veterans Affairs COMMERCIALLY USEFUL FUNCTION (CUF) CERTIFICATION FORM, Form ADR-100, Statement of Agreement or Nonagreement, Civil Appeal Case Information Statement, Form APP-014, Appellant's Proposed Statement on Appeal (Unlimited Civil Case)

California court forms: Judicial Council of California Form SC-105, Request for Court Order and Answer (Small Claims), Judicial Council of California Form SC-120, Defendant’s Claim and ORDER to Go to Small Claims Court (Small Claims), Judicial Council of California Form SER-001, Request for Sheriff to Serve Court Papers, Judicial Council of California Form SER-001, Request for Sheriff to Serve Court Papers, Affidavit for Collection of Personal Property California Probate Code Section 13100, Form POS-040, Proof of Service—Civil, Declaration of Facts of Death (California Superior Court), declaration-of-marriage-for-court-proceeding-california-family-law, ADOPT-200, Adoption Request, ADOPT-200, Stepparent Adoption Request, ADOPT-210, Adoption Agreement, ADOPT-310, Contact After Adoption Agreement, Judicial Council of California Form ADOPT-200, Adoption Request, Form ADR-107, Mediation Attendance Sheet, Form ADR-110, Order Appointing Referee, Form ADR-109, Stipulation or Motion for Order Appointing Referee, Form ADR-102, Request for Trial De Novo After Judicial Arbitration, Form ADR-108, Referee's Report (Code Civ. Proc., §§ 638, 639), Form ADR-106, Petition to Confirm, Correct, or Vacate Contractual Arbitration Award, Form ADR-104, Rejection of Award and Request for Trial After Attorney-Client Fee Arbitration

California probate forms: Judicial Council of California Form DE-111, Petition for Probate (Probate—Decedents Estates), Affidavit for Collection of Personal Property California Probate Code Section 13100, Form DE-142/DE-111(A-3e), Waiver of Bond by Heir or Beneficiary (Probate—Decedents Estates), Form DE-140, Order for Probate, Form DE-150, Letters (Probate), Form DE-154/GC-035, Request for Special Notice (Probate), Form DE-157, Notice of Administration to Creditors, Form DE-131, Proof of Subscribing Witness (Probate), Form DE-172, Creditor's Claim (Probate), Form DE-174, Allowance or Rejection of Creditor's Claim, Form DE-221, Spousal or Domestic Partner Property Petition (Probate—Decedents Estates), Form DE-270 / GC-070, Ex Parte Petition for Authority to Sell Securities and Order, Form DE-315, Order Determining Succession to Primary Residence, Form DE-351/GC-101, Order Appointing Guardian Ad Litem—Probate, Form DE-115/GC-015, Notice of Hearing on Petition to Determine Claim to Property, Attachment to Notice of Hearing Proof of Service by Mail (Probate—Decedents' Estates and Guardianships and Conservatorships), Attachment to Notice of Hearing Proof of Personal Service (Probate—Decedents' Estates and Guardianships and Conservatorships), Form DE-125, Summons (Probate), Form DE-147, Duties and Liabilities of Personal Representative, Form DE-147S, Confidential Supplement to Duties and Liabilities of Personal Representative (Probate)

proof of service forms: Form POS-040, Proof of Service—Civil, Judicial Council of California Form SC-104, Proof of Service (Small Claims), Judicial Council of California Form SC-104, Proof of Service (Small Claims), Form DV-200, Proof of Personal Service (CLETS) (Domestic Violence Prevention), Illinois Circuit Court Eviction Summons and Proof of Service of Eviction Summons & Eviction Complaint (Form E-S 3507.3), proof-of-electronic-service-appellate, Form APP-009, Proof of Service (Appellate Division), Form APP-109, Proof of Service (Appellate Division), Form GC-020(P), PROOF OF PERSONAL SERVICE OF NOTICE OF HEARING— GUARDIANSHIP OR CONSERVATORSHIP, Form APP-109E, Proof of Electronic Service (Appellate Division), Proof of Personal Service of Notice of Initial Appearance—CARE Act Proceedings, Form CARE-116, Proof of Personal Service of Notice of Hearing—CARE Act Proceedings, Form CR-106, Proof of Service — Criminal Record Clearing, CARE-107, Proof of Personal Service of Notice of Order for CARE Act Report, Form CIV-120, Notice of Entry of Dismissal and Proof of Service, Form DAL-012, Proof of Service—Disability Access Litigation, Form EA-200, Proof of Personal Service (Elder or Dependent Adult Abuse Prevention), Form EA-260, Proof of Service of Order After Hearing by Mail (Elder or Dependent Adult Abuse Prevention), Form FL-115, Proof of Service of Summons (Family Law—Uniform Parentage—Custody and Support), Form CR-401, Proof of Service for Petition/Application Under Health and Safety Code Section 11361.8—Adult Crimes

7 days free, then $19.99/month · Cancel anytime