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Yes! You can use AI to fill out Form POS-010, Proof of Service of Summons

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Form POS-010, Proof of Service of Summons, page 1

Basic · 45/100Form Complexity Index

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What this form asks for

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California Form POS-010, Proof of Service of Summons, is a legal document filed in court to formally declare that a party in a lawsuit has been successfully served with a summons and complaint. This form is crucial as it provides the court with evidence that the defendant has been properly notified of the legal action, which is a requirement for the case to 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 fields89

Pages2

Form Complexity IndexBasic, 45/100

The AI checks your answers before you download

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

Exclusive Method of Service Selection

This validation ensures that exactly one method of service from section 5 (a, b, c, or d) is selected. Service can only be legally accomplished through one defined method per proof of service form. If zero or multiple options are selected, the form is ambiguous and legally invalid, which would lead to rejection by the court clerk.

Personal Service Date and Time Completeness

Checks that if '5a. by personal service' is selected, both the date (5a(1)) and time (5a(2)) of service are filled in. This information is the core evidence of when service was legally completed. Missing this data makes the proof of service incomplete and invalidates the claim of personal service.

Substituted Service Mailing Date Logic

Verifies that if '5b. by substituted service' is selected, the mailing date in 5b(4) is on or after the date of leaving the documents. The law requires that the mailing happens after the physical delivery to complete the substituted service. An earlier mailing date would indicate a procedural error, invalidating the service attempt.

Registered Process Server Details Requirement

Ensures that if the server identifies as a 'Registered California process server' (7e(3)), then the Registration Number and County fields are mandatory. This information is required for the court to verify the server's credentials and authority. Failure to provide these details when claiming registered status would cast doubt on the server's legitimacy and could lead to rejection of the proof.

Server Identity and Signature Consistency

This check confirms that the name of the person who served the papers listed in section 7a is identical to the name printed on the signature line at the end of the form. This is crucial for establishing accountability and confirming that the person making the declaration is the same person who performed the service. A mismatch would imply a fraudulent or erroneous filing.

Documents Served Selection

Validates that at least one checkbox is marked in section 2, indicating which documents were served. The purpose of the form is to prove service of specific legal documents, so this information is fundamental. If no documents are indicated, the form has no legal meaning and will be rejected.

And 8 more checks

Conditional 'Other' Field Completion
Case Number Consistency Across Pages
Service Address Completeness
Notice to Person Served Specification
Fictitious Name Specification
Declaration or Certification Selection
Logical Signature Date
Party Served Name Requirement

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How to Fill Out POS-010 Online for Free in 2026

What the AI walks you through.

Navigate to Instafill.ai and upload your POS-010 form, or select it from their library of official documents.
Enter the case details, including the court information, case number, and the names of the plaintiff/petitioner and defendant/respondent.
Check the boxes for all the documents that were served, such as the summons, complaint, and any other specified papers.
Provide the full name of the party served, the person who received the documents (if different), and the complete address where service occurred.
Select the appropriate box to indicate the method of service (e.g., personal, substituted, mail) and fill in the required date, time, and other relevant details for that method.
Complete the server's information, including their name, address, and status (e.g., registered process server), and then sign the declaration under penalty of perjury.
Review all the entered information for accuracy, then download the completed, ready-to-file Form POS-010.

Common Mistakes in Completing POS-010

The ones the AI is built to catch.

Incorrect Case Number or Party Names

Users often mistype the case number or misspell the names of the plaintiff or defendant in the header section. This error can occur from simple typos or by copying information from an outdated draft. An incorrect case number can cause the proof of service to be filed in the wrong case or rejected by the court clerk, while incorrect party names can give the defendant grounds to challenge the service's validity, causing significant delays.

Confusing the Party Served with the Person Served

A frequent error is entering the name of the individual who received the papers (e.g., a receptionist) in section 3a, which is reserved for the legal party named in the lawsuit (e.g., 'ABC Corporation'). Section 3b is the correct place for the individual's name and relationship. This mistake can invalidate service against the intended corporate or entity defendant, as it fails to properly identify who was legally served. To avoid this, the official defendant name from the complaint must be in 3a.

Incomplete Steps for Substituted Service

Substituted service (Section 5b) is complex and often done incorrectly. Servers frequently forget that they must both leave the documents with a qualified person AND mail a separate copy to that same address. A common failure is neglecting to fill in the mailing date in 5b(4) or, critically, failing to attach the required 'declaration of diligence' (5b(5)) that proves personal service was attempted first. Any one of these omissions makes the service defective and subject to being thrown out by the court.

Incorrectly Identifying the Capacity of the Person Served

Section 6 specifies the capacity in which the defendant was served, which is crucial when serving a business. A major error is serving a corporate officer but checking box 6a ('as an individual defendant') instead of 6d ('On behalf of') and selecting the appropriate Code of Civil Procedure section (e.g., 416.10 for a corporation). This mistake means the business entity itself was not properly served, which can nullify the service and force the plaintiff to start over.

The Wrong Person Signing the Declaration

The declaration in Section 8 must be signed by the person who actually performed the service and whose information is listed in Section 7. It is a serious and common error for an attorney, paralegal, or supervisor to sign the form when they did not personally deliver the documents. This constitutes a false declaration under penalty of perjury and renders the proof of service void. The name in Section 7 must always match the signature.

Premature or Missing Signature Date

The signature date must be on or after the final act required for service. For substituted service, this means the form cannot be dated and signed until after the follow-up copy has been mailed (the date in 5b(4)). Signing the form before all steps are complete, or simply forgetting to enter a date, are common oversights that create a defect in the proof of service and can be used to challenge its validity.

Failing to File a Separate Proof for Each Party Served

The form header clearly states, '(Separate proof of service is required for each party served.)' Despite this warning, filers sometimes try to list multiple defendants on one form or serve several parties but only file a single proof. This procedural error will result in the court only recognizing service for the one party properly documented, leaving the other defendants legally un-served and potentially leading to a partial dismissal.

Incomplete List of Served Documents

In Section 2, the server must check a box for every single document that was delivered to the defendant. People often forget to check a required item, such as the 'ADR package,' or fail to specify all documents when using the 'other' category. If a document was served but not indicated on the proof, there is no legal evidence it was provided, which can cause disputes and force a re-service of the missing papers.

Missing Server Status and Registration Information

Section 7 requires the server to declare their status (e.g., not a registered process server, exempt, or registered). If the server is a registered California process server, they must provide their registration number and county. This section is frequently left incomplete, especially by individuals who serve papers infrequently and are unsure of their status. This omission can lead to the form being scrutinized or rejected by the clerk for being incomplete.

Using a Non-Fillable PDF Incorrectly

Many court forms are distributed as flat, non-fillable PDFs, which can lead to illegible handwritten entries or formatting problems when people try to type over the lines. These issues can cause a court clerk to reject the filing. AI-powered tools like Instafill.ai can prevent this by converting the non-fillable PDF into an interactive, fillable version, ensuring all data is entered clearly, legibly, and in the correct fields.

Frequently Asked Questions About POS-010

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Can I fill other forms too?

This plan is for your POS-010: 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 POS-010?

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 POS-010, 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 POS-010 to fill out?

POS-010 has a Form Complexity Index of 45 out of 100, in the basic tier: 89 fillable fields across 2 pages. Instafill.ai's AI fills it in under a minute, with every field there for you to review before you download.

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Other forms like this one

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

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 DE-120(P), Proof of Personal Service of Notice of Hearing—Decedent's Estate or Trust, 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)

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