Declaration Of Mailing – Fill Out and Use This PDF

Updated: Nov 11, 2026

The Declaration Of Mailing form is a document used to officially confirm that copies of legal documents have been mailed to the relevant parties in accordance with specific legal requirements. This form must be filled out and signed by an individual who is at least 18 years of age, is not part of the ongoing legal action, and has followed the established procedures for sending mail through the United States Postal Service. Emphasizing the importance of this form, it serves not only as a record of mailing but also warns that falsifying the document could lead to felony charges, underscoring its significance in legal proceedings. If you need to complete a Declaration Of Mailing, make sure you follow the guidelines carefully and click the button below to fill out the form.

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Declaration Of Mailing PDF Details

In the realm of legal and official communications, the procedure to serve documents correctly holds critical importance, and the Declaration of Mailing form serves as a pivotal component within this process. Primarily, this form is utilized by individuals who are at least 18 years old and are not directly involved in the action at hand, ensuring an impartial handling of the document mailing. This stipulation is in line with the requirements outlined in the Code of Civil Procedure, section 1013a, showcasing the form's adherence to legal standards. The process mandates that an unsigned copy of this declaration accompanies the mailed documents, effectively affirming that the process adheres to stipulated guidelines. Upon mailing, the sender is required to complete and sign the Declaration of Mailing form, signifying the completion of the mailing phase. This step is not merely procedural but carries legal weight, as falsification of this document is considered a felony, with penalties that can include imprisonment. The form necessitates the provision of detailed information about the sender, the mailed documents, and the mailing process itself, ensuring transparency and accountability in document delivery within the legal framework.

Question	Answer
Form Name	Declaration Of Mailing
Form Length	1 pages
Fillable?	No
Fillable fields	0
Avg. time to fill out	15 sec
Other names	ca laciv143 of, california 143 declaration, form declaration of mailing fill, form declaration mailing

How to Fill Out Form LACIV 143

Form LACIV 143 at a glance

What it is: Form LACIV 143 (Rev. 09/08) is the Declaration of Mailing under Code Civ. Proc., § 1013.

Who signs: An unsigned copy of this Declaration of Mailing must be attached to and mailed with the copies. After the copies are deposited in the mail, the person who mailed them must fill out and sign this form attached as the last page of the originals for filing.

Only a person who is age 18 years or older and not a party to this action can serve document copies by mail.

A filled-in Form LACIV 143 example: a person mails one document for a party

Form LACIV 143 example filled out, example: a person mails one document for a party — Alex Sample, not a party, fills out the Declaration of Mailing. Alex mails one document on March 14, 2026 from a business address, so the residence box stays empty. The picture shows the filled form, and its names and figures are sample values. Alex places the envelope for collection, so the personally sealing and mailing box stays empty.

How to fill out Form LACIV 143, box by box

Short title and case number

Enter the SHORT TITLE and the CASE NUMBER.

Your residence or business address and telephone number

Enter your address, city, state and zip code and telephone number.

At the time of mailing, you were at least 18 years of age or older.

You are employed in, or a resident of, the county in which this mailing occurred, and not a party to this action.

The party, personally sealing and mailing or placing for collection, and the date and place

Enter the name of party on whose behalf you served the document(s), and mark how you did it: personally sealing and mailing with postage prepaid, or placing for collection and mailing following ordinary business practices.

True copies are addressed as shown, in envelope(s) sealed, or to be sealed in the ordinary course of business.

Enter the DATE MAILED and the PLACE OF MAILING (City and state).

Exact title(s) of document(s) served

Write the exact title(s) of document(s) served.

Signing the declaration

Fill in DATED, TYPE OR PRINT NAME OF PERSON WHO DID MAILING and the SIGNATURE OF PERSON WHO DID MAILING.

Declare under penalty of perjury, under the laws of the State of California, that it is true and correct.

Common questions about Form LACIV 143

Is there a penalty?

Falsifying this form can be a felony, punishable by imprisonment in state prison.

Sources

[1] Form LACIV 143 (Rev. 09/08), Declaration of Mailing, Superior Court of California, County of Los Angeles (the Official source link on this page).