Who may serve a summons and complaint in Idaho?

An officer authorized by law to serve process may serve it, or any person over 18 who is not a party, under Idaho Rule of Civil Procedure 4(c)(2).

Can a party serve their own summons in Idaho?

No. Idaho Rule of Civil Procedure 4(c)(2) limits service of the summons and complaint to an officer authorized by law or a non-party over 18. The Idaho Court Assistance Office's own instructions confirm that the person filing the complaint is not permitted to serve the documents and must have someone else do so.

Is ordinary mail enough to serve an Idaho summons?

No. Idaho Rule of Civil Procedure 4(d)(1) gives an individual defendant only three service methods: personal delivery, leaving copies at the dwelling with a resident who is 18 or older, or delivery to an authorized agent. Registered or certified mail applies only to a corporation through an unavailable statutory agent, or as the required follow-up mailing when service is by court-ordered publication.

Does an Idaho proof of service need to be notarized?

Not the ordinary Affidavit of Service. A non-officer proves service with an unsworn certification declared true under penalty of perjury under Idaho Code Section 9-1406(1), and form CAO Cv 2-4X carries no notary block. The separate Acknowledgment of Service, used when a defendant agrees to accept service, still needs a notary, because Section 9-1406(2) excludes acknowledgments from that substitute.

How long do I have to serve a summons in Idaho?

182 days after the complaint is filed. If the defendant is not served by then, the court must dismiss the action without prejudice after 14 days' notice to the plaintiff, unless the plaintiff shows good cause for an extension (Idaho Rule of Civil Procedure 4(b)(2)).

Is there a deadline to file the proof of service in Idaho?

No specific day count. Idaho Rule of Civil Procedure 4(g)(1) requires only that the proof of service be filed with the court unless the party served has already filed an appearance.

How do I serve later papers like motions in an Idaho case?

If a party has an attorney, Idaho Rule of Civil Procedure 5(b)(1) requires service on the attorney unless the court orders service on the party. Rule 5(b)(2) allows hand delivery, leaving a copy at the person's office with whoever is in charge, or, if there is no office or it is closed, at the dwelling with a resident 18 or older, mailing to the last known address, or electronic means if the person consented in writing. Unlike the summons, a party may serve these papers, and proof is a certificate stating the date and manner of service and the name and address of the person served (Rule 5(e)(1)).

What happens if service of an Idaho summons is defective?

If a defendant is not properly served within 182 days after the complaint is filed, the court must dismiss the action without prejudice after 14 days' notice, unless good cause is shown (Idaho Rule of Civil Procedure 4(b)(2)). Follow Rule 4(c) through 4(e) exactly, and never certify a proof of service that misstates how or when service occurred, since a non-officer's certification is made under penalty of perjury.

Does this Idaho proof of service cover federal court, service abroad, or a government defendant?

No. Service on the federal government, a foreign country, or under the Hague Service Convention, and service in federal court under the Federal Rules of Civil Procedure, follow separate rules not covered on this page.

Idaho Proof of Service

Q: Does Idaho have an official proof of service form?

Only the Summons itself is mandated by rule, and it must substantially follow Appendix B to the Idaho Rules of Civil Procedure. The Idaho Court Assistance Office's Affidavit of Service, form CAO Cv 2-4X, is a self-help convenience form, not one required by rule, so the issuing court's own version controls if that court requires one.

Idaho lets an officer authorized by law to serve process, or any non-party over 18, serve a summons, but an individual defendant may be served only three ways under Rule 4(d)(1), with no independent mail option and no follow-up mailing required after leaving papers at the dwelling.

Find out where you stand in Idaho

Where are you with service?

DocDraft provides document preparation, not legal advice.

Introduction

Idaho lets an officer authorized by law to serve process serve a summons, or any person over 18 who is not a party, under Idaho Rule of Civil Procedure 4(c)(2). A party cannot serve their own summons. The Summons must substantially follow Appendix B to the IRCP; the Affidavit of Service, form CAO Cv 2-4X, is a self-help form, not one mandated by rule, so the issuing court's own version controls if required. An officer's return needs no oath. A non-officer instead proves service with an unsworn certification under penalty of perjury under Idaho Code Section 9-1406(1), not a notarized affidavit; only the Acknowledgment of Service, used for consent, needs a notary, since Section 9-1406(2) excludes acknowledgments. An individual defendant may be served only three ways under Rule 4(d)(1): personal delivery, leaving copies at the dwelling with a resident 18 or older, with no follow-up mailing required, or delivery to an authorized agent. Ordinary mail alone never serves an individual; registered or certified mail applies only to a corporation through an unavailable agent, or as the required follow-up mailing for publication. If not served within 182 days after filing, the court must dismiss without prejudice after 14 days' notice to the plaintiff, unless good cause is shown. Idaho sets no day count to file the proof, but it must be filed unless the party served already filed an appearance. Later papers under Rule 5 may be served by a party, unlike the summons. Federal, foreign, and government service follow other rules. Attorney review is available before you file.

Key Things to Know

1
An officer authorized by law to serve process may serve the summons and complaint, or any person over 18 who is not a party, under Idaho Rule of Civil Procedure 4(c)(2). The Idaho Court Assistance Office's Affidavit of Service, form CAO Cv 2-4X, is a self-help convenience form, not one mandated by rule, so the issuing court's own version controls if required.
2
An officer's certificate needs no oath under Rule 4(g)(1)(A). A non-officer instead proves service with an unsworn certification declared true under penalty of perjury under Idaho Code Section 9-1406(1), using the exact wording: I certify (or declare) under penalty of perjury pursuant to the law of the State of Idaho that the foregoing is true and correct.
3
The separate Acknowledgment of Service, used when a defendant agrees to accept service, still needs a notary, because Idaho Code Section 9-1406(2) excludes acknowledgments from the unsworn-certification substitute. The ordinary Affidavit of Service, CAO Cv 2-4X, carries no notary block at all.
4
An individual defendant may be served only three ways under Rule 4(d)(1): personal delivery, leaving copies at the dwelling or usual place of abode with a resident who is at least 18, or delivery to an authorized agent. Unlike many states, no follow-up mailing is required after leaving the copies at the dwelling.
5
Ordinary mail alone never serves an individual defendant in Idaho. Registered or certified mail applies only to a corporation through a statutory agent that cannot be found (Rule 4(d)(3)), or as the required follow-up mailing to the defendant's last known address when service is by court-ordered publication (Rule 4(e)).
6
If a defendant is not served within 182 days after the complaint is filed, the court must dismiss the action without prejudice after 14 days' notice to the plaintiff, unless the plaintiff shows good cause, in which case the court must extend the time for service (Rule 4(b)(2)).
7
Idaho sets no specific day count to file the proof of service; it must be filed unless the party served has already filed an appearance (Rule 4(g)(1)). Later papers under Rule 5 may be served by a party, unlike the summons, and proof is a certificate stating the date and manner of service and the name and address of the person served (Rule 5(e)(1)).

Key decisions before you file

Before you file a Proof of Service in Idaho, a few decisions shape the document: which option to choose and what each one means. The Proof of Service guide walks through them.

Open the Proof of Service guide

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IN THE DISTRICT COURT OF THE [JUDICIAL DISTRICT] JUDICIAL DISTRICT OF THE STATE OF IDAHO, IN AND FOR THE COUNTY OF [COUNTY]

[PLAINTIFF NAME], Plaintiff, v. Case No. [CASE NUMBER] [DEFENDANT NAME], Defendant.

PROOF OF SERVICE

The Idaho Court Assistance Office's Affidavit of Service, form CAO Cv 2-4X, is a self-help convenience form, not one mandated by rule. This proof states the content IRCP 4(g)(1) requires. If the issuing court requires its own version, that court's form controls instead.

I served [NAME OF PERSON OR ENTITY SERVED] with a copy of the Summons and Complaint, together with [LIST OF ADDITIONAL PAPERS SERVED, IF ANY], on [DATE OF SERVICE] at [TIME OF SERVICE], at [ADDRESS OR OTHER PLACE OF SERVICE].

METHOD OF SERVICE

[IF APPLICABLE: PERSONAL DELIVERY. I delivered the documents to [NAME OF PERSON SERVED] personally, as IRCP 4(d)(1)(A) requires.]

[IF APPLICABLE: LEFT AT DWELLING. I left the documents at the individual's dwelling with [NAME OF RESIDENT], who resides there and is at least 18, as IRCP 4(d)(1)(B) requires.]

[IF APPLICABLE: AUTHORIZED AGENT. I delivered the documents to [NAME OF AUTHORIZED AGENT], authorized to accept service for [NAME OF DEFENDANT], as IRCP 4(d)(1)(C) requires.]

[IF APPLICABLE: MAIL TO UNAVAILABLE STATUTORY AGENT. No statutory agent could be found for [NAME OF CORPORATE DEFENDANT], so I mailed the documents by registered or certified mail to [ADDRESS], as IRCP 4(d)(3) requires.]

[IF APPLICABLE: PUBLICATION. Under the order of [COURT] dated [DATE OF ORDER], the Summons was published in [NAME OF NEWSPAPER], and a copy was also mailed to [DEFENDANT'S LAST KNOWN ADDRESS], as IRCP 4(e) requires. The publisher's affidavit stating the dates of publication, with a true copy of the publication, is attached, as IRCP 4(g)(1)(E) requires.]

OFFICER CERTIFICATE

[IF APPLICABLE: I certify that I am a sheriff, deputy sheriff, peace officer, or court marshal, and that the foregoing is a true statement of how service was made, as IRCP 4(g)(1)(A) requires.]

NON-OFFICER CERTIFICATION

[IF APPLICABLE: I certify that I am over 18 and not a party to this action. I certify (or declare) under penalty of perjury pursuant to the law of the State of Idaho that the foregoing is true and correct, as Idaho Code Section 9-1406(1) and IRCP 4(g)(1)(B) require.]

[IF APPLICABLE: MAILING DETAILS. I mailed the documents on [DATE MAILED] to [ADDRESS MAILED TO], as IRCP 4(g)(1)(C) requires. If sent by registered or certified mail, the postal receipts are attached, as IRCP 4(g)(1)(D) requires.]

[SIGNATURE] [NAME OF SERVER] [ADDRESS OF SERVER] [CITY, IDAHO ZIP] Official capacity, if any: [OFFICIAL CAPACITY OF SERVER]

ACKNOWLEDGMENT OF SERVICE

The Idaho Court Assistance Office's Acknowledgment of Service, form CAO Cv 2-1X, is used for service by consent. If the issuing court requires that form, it controls instead.

[IF APPLICABLE: [NAME OF DEFENDANT] acknowledges receipt of the Summons and Complaint on [DATE].

[SIGNATURE OF DEFENDANT]

Acknowledged before me on [DATE] by [NAME OF DEFENDANT].

[SIGNATURE OF NOTARY PUBLIC] Notary Public in and for the State of Idaho My commission expires: [DATE]]

CERTIFICATE OF SERVICE OF LATER PAPERS

[IF APPLICABLE: I certify that on [DATE], I served a copy of [NAME OF DOCUMENT] on [NAME OF PERSON SERVED, OR THE PARTY'S ATTORNEY IF REPRESENTED], whose address is [ADDRESS OF PERSON SERVED], by [HAND DELIVERY, LEAVING A COPY AT THE OFFICE WITH THE PERSON IN CHARGE, LEAVING A COPY AT THE DWELLING WITH A RESIDENT 18 OR OLDER BECAUSE THERE IS NO OFFICE OR IT WAS CLOSED, MAIL TO THE LAST KNOWN ADDRESS, OR ELECTRONIC MEANS CONSENTED TO IN WRITING], at [ADDRESS, EMAIL, OR FAX NUMBER], as IRCP 5(b) and 5(e)(1) require.

I certify (or declare) under penalty of perjury pursuant to the law of the State of Idaho that the foregoing is true and correct.

[SIGNATURE] [NAME]]

Idaho Requirements for Proof of Service

Party Barred From Serving the Summons
A party cannot serve their own summons and complaint. Service must come from an officer authorized by law to serve process, or any non-party over 18 (Idaho Rule of Civil Procedure 4(c)(2)).
182-Day Service Deadline With Good-Cause Extension
If a defendant is not served within 182 days after the complaint is filed, the court must dismiss the action without prejudice after 14 days' notice to the plaintiff, unless the plaintiff shows good cause, in which case the court must extend the time for service (Rule 4(b)(2)).
Only Three Ways to Serve an Individual
An individual defendant may be served only by personal delivery, by leaving copies at the dwelling with a resident who is 18 or older, or by delivery to an authorized agent, with no independent mail option (Rule 4(d)(1)).
No Follow-Up Mailing After Dwelling Service
Unlike many states, Idaho Rule of Civil Procedure 4(d)(1)(B) requires no follow-up mailing after copies are left at the individual's dwelling or usual place of abode with a qualifying resident.
Unsworn Certification, Not a Notarized Affidavit
A non-officer proves service with an unsworn certification declared true under penalty of perjury under Idaho Code Section 9-1406(1), not a notarized affidavit. Only the separate Acknowledgment of Service, used for service by consent, needs a notary, because Section 9-1406(2) excludes acknowledgments.
No Rule-Mandated Proof of Service Form
Only the Summons is mandated by rule and must substantially follow Appendix B to the Idaho Rules of Civil Procedure. The Affidavit of Service, form CAO Cv 2-4X, is a self-help convenience form, and the issuing court's own version controls if required.
No Fixed Deadline to File the Proof
Idaho Rule of Civil Procedure 4(g)(1) sets no specific day count to file the proof of service, but it must be filed unless the party served has already filed an appearance.
Party May Serve Later Papers Under Rule 5
Unlike the summons, a party to the case may serve later papers such as motions under Idaho Rule of Civil Procedure 5(b), but a represented party must be served through their attorney unless the court orders otherwise (Rule 5(b)(1)). Proof is a certificate stating the date and manner of service and the name and address of the person served (Rule 5(e)(1)).

Find out where you stand in Idaho

Introduction

Key Things to Know

Key decisions before you file

Customize your Proof of Service Template with DocDraft

Idaho Requirements for Proof of Service

Party Barred From Serving the Summons

182-Day Service Deadline With Good-Cause Extension

Only Three Ways to Serve an Individual

No Follow-Up Mailing After Dwelling Service

Unsworn Certification, Not a Notarized Affidavit

No Rule-Mandated Proof of Service Form

No Fixed Deadline to File the Proof

Party May Serve Later Papers Under Rule 5

Frequently Asked Questions