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Rule 215.Amended Pleadings

Part II. Pleadings · Last amended July 1, 2021 · Last verified September 4, 2026

In one sentenceRule 215 allows one amendment as a matter of right within 21 days, requires a redline or particularized statement of changes otherwise, and treats issues tried by consent as though pleaded.

Full Text of Rule 215

Text sizeJump to: (a) (b)

(a) Amendments Before Trial.
(1) Amending as a Matter of Right. A party may amend its pleading once as a matter of right within:
(A) 21 days after serving it; or
(B) if the pleading is one to which a responsive pleading is required, 21 days after service of a responsive pleading or 21 days after service of a motion under Rule 206(b), (e), or (f), whichever is earlier.
(2) Other Amendments. In all other cases, a party may amend its pleading only with the opposing party's written consent or the court's leave. The court should freely give leave when justice so requires.
(A) Request to Amend Pleading. Whether by stipulation or motion, the request to amend must:
(i) attach a copy of the unsigned proposed amended pleading setting forth the entire pleading as an amended without incorporating the prior pleading by reference; and
(ii) include a statement with particularity of what amendments are being requested, or in the alternative, a “redline” or comparison version of the proposed amended pleading that shows the changes to the current pleading.
(B) Proposed Order. A proposed order allowing the amendment of the pleading must be submitted by the party seeking to amend a pleading.
(C) Amended Pleading Must be Filed. Once the order to amend is granted by the court, the moving party must file the amended pleading and serve a copy to the opposing party.
(3) Time to Respond. Unless the court orders otherwise, any required response to an amended pleading must be made within the time remaining to respond to the original pleading or within 14 days after service of the amended pleading, whichever is later.
(b) Amendments During and After Trial.
(1) Based on an Objection at Trial. If, at trial, a party objects that evidence is not within the issues raised in the pleadings, the court may permit the pleadings to be amended. The court should freely permit an amendment when doing so will aid in presenting the merits and the objecting party fails to satisfy the court that the evidence would prejudice that party's action or defense on the merits. The court may grant a continuance to enable the objecting party to meet the evidence.
(2) For Issues Tried by Consent. When an issue not raised by the pleadings is tried by the parties’ express or implied consent, it must be treated in all respects as if raised in the pleadings. A party may move, at any time, even after judgment, to amend the pleadings to conform them to the evidence and to raise an unpleaded issue. But failure to amend does not affect the result of the trial of that issue.
End

Rule History

(Adopted March 29, 2021, effective July 1, 2021.)

Plain-English Summary

Rule 215 governs changing a pleading.

Once, as a matter of right

A party may amend once within 21 days after serving the pleading — or, where a responsive pleading is required, within 21 days after service of a responsive pleading or of a Rule 206(b), (e) or (f) motion, whichever is earlier.

Otherwise, consent or leave

Any other amendment needs the opposing party's written consent or the court's leave, and the court should freely give leave when justice so requires.

The procedural requirements are specific. Whether by stipulation or motion, the request must attach an unsigned copy of the proposed amended pleading setting out the entire pleadingwithout incorporating the prior pleading by reference — and must state with particularity what amendments are requested, or alternatively supply a redline or comparison version showing the changes. A proposed order must be submitted, and once granted the moving party must file the amended pleading and serve a copy.

Responding

Any required response to an amended pleading is due within the time remaining to respond to the original, or 14 days after service of the amended pleading, whichever is later.

At trial

If a party objects that evidence falls outside the pleadings, the court may permit amendment — and should freely permit it where doing so aids presentation of the merits and the objecting party fails to satisfy the court that the evidence would prejudice its action or defense. The court may grant a continuance to let the objecting party meet the evidence.

Where an unpleaded issue is tried by express or implied consent, it must be treated in all respects as if raised in the pleadings. A party may move to amend to conform at any time, even after judgment — and failure to amend does not affect the result of the trial of that issue. What was actually litigated is what was decided, whether or not the paperwork ever caught up.

Frequently Asked Questions

Can I amend my petition without permission?

Once. Rule 215(a)(1) allows amendment as a matter of right within 21 days after serving the pleading, or where a responsive pleading is required, within 21 days after service of a responsive pleading or of a Rule 206(b), (e) or (f) motion, whichever is earlier.

What must I attach to a motion to amend?

Rule 215(a)(2)(A) requires an unsigned copy of the proposed amended pleading setting out the entire pleading without incorporating the prior one by reference, plus a statement with particularity of the amendments requested or a redline comparison version.

How long do I have to respond to an amended pleading?

Rule 215(a)(3) allows the time remaining to respond to the original pleading or 14 days after service of the amended pleading, whichever is later.

What if an issue was tried that nobody pleaded?

Rule 215(b)(2) treats an issue tried by the parties' express or implied consent as if raised in the pleadings, allows a motion to amend at any time even after judgment, and provides that failure to amend does not affect the result of the trial of that issue.

What standard applies to a request to amend?

Rule 215(a)(2) provides that the court should freely give leave when justice so requires.

Source & verification. Rule text and Rule History reproduced verbatim from the Idaho Rules of Family Law Procedure as published by the Idaho Supreme Court, current through amendments effective July 1, 2026. Promulgated by the Supreme Court of Idaho (Idaho Const. art. V, sec. 25). Last verified September 4, 2026. · Official text
Also known as: amended pleadingsamendingleave to amendredline21 daystried by consentconform to the evidence