Form POS-040 at a glance
What it is: POS-040 Proof of Service-Civil (Proof of Service) is designed to be used to show proof of service of documents by (1) personal service, (2) mail, (3) overnight delivery, (4) messenger service, or (5) fax.
Who signs: The person who served the documents must complete the Proof of Service.
A person must be over 18 years of age to serve the documents.
A party to the action cannot serve the documents.
A filled-in Form POS-040 example: a proof of personal service

How to fill out Form POS-040, box by box
Check method of service (only one)

Fourth box, left side: Check the method of service that was used. You should check only one method of service and should show proof of only one method on the form. If you served a party by several methods, use a separate form to show each method of service.
Certain documents must be personally served. For example, an order to show cause and temporary restraining order generally must be served by personal delivery. You must determine whether a document must be personally delivered or can be served by mail or another method.
The law may require that documents be served in a particular manner (such as by personal delivery) for certain purposes. Service by fax generally requires the prior agreement of the parties.
First box, left side, the person for whom you served
Second box, left side, the county and the court address
Plaintiff/Petitioner and Defendant/Respondent
Case number, judge and department
Second box, right side: Print the case number in this box. The case number should be the same as the case number on the documents that you served.
Third box, right side: State the judge and department assigned to the case, if known.
First box, top of form, right side: Leave this box blank for the court's use.
Your address and the fax number from which you served
Item 4, the documents you served
Item 5, the persons served

Provide the names, addresses, and other applicable information about the persons served. If more than one person was served, check the box on item 5, complete the Attachment to Proof of Service-Civil (Persons Served) (form POS-040(P)), and attach it to form POS-040.
(Complete if service was by personal service, mail, overnight delivery, or messenger service.) Business or residential address where person was served:
(Complete if service was by fax.) Fax number where person was served:
Item 6a, by personal service
Check the box before the method of service that was used, and provide any additional information that is required.
By personal service. I personally delivered the documents to the persons at the addresses listed in item 5. (1) For a party represented by an attorney, delivery was made (a) to the attorney personally; or (b) by leaving the documents at the attorney's office, in an envelope or package clearly labeled to identify the attorney being served, with a receptionist or an individual in charge of the office; or (c) if there was no person in the office with whom the notice or papers could be left, by leaving them in a conspicuous place in the office between the hours of nine in the morning and five in the evening. (2) For a party, delivery was made to the party or by leaving the documents at the party's residence with some person not younger than 18 years of age between the hours of eight in the morning and eight in the evening.
Item 6b, by United States mail
By United States mail. I enclosed the documents in a sealed envelope or package addressed to the persons at the addresses in item 5 and (specify one):
deposited the sealed envelope with the United States Postal Service, with the postage fully prepaid.
The envelope or package was placed in the mail at (city and state):
Item 6c, by overnight delivery
By overnight delivery. I enclosed the documents in an envelope or package provided by an overnight delivery carrier and addressed to the persons at the addresses in item 5.
I placed the envelope or package for collection and overnight delivery at an office or a regularly utilized drop box of the overnight delivery carrier.
Item 6d, by messenger service
By messenger service. I served the documents by placing them in an envelope or package addressed to the persons at the addresses listed in item 5 and providing them to a professional messenger service for service.
A declaration by the messenger must accompany this Proof of Service or be contained in the Declaration of Messenger.
Item 6e, by fax transmission
By fax transmission. Based on an agreement of the parties to accept service by fax transmission, I faxed the documents to the persons at the fax numbers listed in item 5.
No error was reported by the fax machine that I used.
A copy of the record of the fax transmission, which I printed out, is attached.
Declaration of Messenger
If item 6d is checked, the declaration must be completed or a separate declaration from a messenger must be attached.
I personally delivered the envelope or package received from the declarant to the persons at the addresses listed in item 5.
I am over 18 years of age and not a party to the legal proceeding.
Date and signature
You must sign and date the proof of service form.
By signing, you are stating under penalty of perjury that the information that you have provided on form POS-040 is true and correct.
More rules for Form POS-040
The Proof of Service should be typed or printed.
If you have Internet access, a fillable version of this proof of service form is available at www.courts.ca.gov/forms.htm.
Common questions about Form POS-040
When is this form not the right one?
This proof of service form should not be used to show proof of service of a summons and complaint. For that purpose, use Proof of Service of Summons (form POS-010). Also, this proof of service form should not be used to show proof of electronic service. For that purpose, use Proof of Electronic Service (form POS-050).
Sources
[1] Form POS-040 (Rev. January 1, 2020), Proof of Service-Civil, Judicial Council of California (the Official source link on this page).





