(a) Amendments. A party may amend the party's pleading once as a matter of course at any time before a responsive pleading is served or, if the pleading is one to which no responsive pleading is permitted and the action has not been placed upon the trial calendar, the party may so amend the pleading at any time within twenty (20) days after the pleading is served. Otherwise a party may amend the party's pleading only by leave of court or by written consent of the adverse party; and leave shall be freely given when justice so requires. When filing a motion to amend in the EFS, the amended pleading shall be attached as an exhibit to the motion and filed in accordance with Rule 1(b)(3). Amendments shall be embodied in a fair copy of the whole paper as amended. A party shall plead in response to an amended pleading within the time remaining for response to the original pleading, or within ten (10) days after service of the amended pleading, whichever period may be the longer, unless the court otherwise orders.
Rule 15.Amended and Supplemental Pleadings.
Current through February 2024 · Last verified July 8, 2026
In one sentenceRule 15 lets a party amend a pleading once without permission within set time limits, allows later amendments with the court's leave or the other side's consent, lets pleadings be amended to match evidence at trial, and lets some amendments relate back to the date of the original pleading.
Full Text of Rule 15
(b) Amendments to Conform to the Evidence. When issues not raised by the pleadings are tried by express or implied consent of the parties, they shall be treated in all respects as if they had been raised in the pleadings. Such amendment of the pleadings as may be necessary to cause them to conform to the evidence and to raise these issues may be made upon motion of any party at any time, even after judgment; but failure so to amend does not affect the result of the trial of these issues. If evidence is objected to at the trial on the ground that it is not within the issues made by the pleadings, the court may allow the pleadings to be amended and shall do so freely when the presentation of the merits of the action will be promoted thereby and the objecting party fails to satisfy the court that the admission of such evidence would prejudice the objecting party in maintaining the party's action or defense upon the merits. The court may grant a continuance to enable the objecting party to meet such evidence.
(c) Relation Back of Amendments. Whenever the claim or defense asserted in the amended pleading arose out of the conduct, transaction, or occurrence set forth or attempted to be set forth in the original pleading, the amendment relates back to the date of the original pleading. An amendment changing or adding a plaintiff or defendant or the naming of a party relates back if the foregoing provision is satisfied and within the period provided by Rule 4(1) for service of the summons, complaint, Language Assistance Notice, and all other required documents, the party against whom the amendment adds a plaintiff, or the added defendant:
(1) Has received such notice of the institution of the action that the party would not be prejudiced in maintaining a defense on the merits; and
(2) Knew or should have known that but for a mistake the action would have been brought by or against the plaintiff or defendant to be added.
(d) Supplemental Pleadings. Upon motion of a party the court may, upon reasonable notice and upon such terms as are just, permit the party to serve a supplemental pleading, setting forth transactions or occurrences or events which have happened since the date of the pleading sought to be supplemented. Permission may be granted even though the original pleading is defective in its statement of a claim for relief or defense. If the court deems it advisable that the adverse party plead to the supplemental pleading, it shall so order, specifying the time therefor.
Amendment History
Rhode Island does not publish a per-rule amendment history inside the compiled rules text reproduced here. The text above is verified current through the source’s own February 2024 printing; for the underlying adopting orders and any later amendments, see the Rhode Island Judiciary’s compiled rules page.
Plain-English Summary
Rule 15 gives a party one free amendment. A pleading can be amended once as a matter of course any time before a responsive pleading is served; if no responsive pleading is allowed and the case hasn’t reached the trial calendar, the party can amend within twenty days after serving the original pleading. Beyond that, a pleading can only be amended with leave of court or the other side’s written consent — though the rule directs courts to give that leave freely when justice requires it. A party responding to an amended pleading gets whichever is longer: the time remaining to respond to the original pleading, or ten days after the amended pleading is served, unless the court sets a different deadline. When filing a motion to amend electronically, the proposed amended pleading has to be attached to the motion.
The rule also lets pleadings catch up to what happened at trial. If the parties try an issue that wasn’t raised in the pleadings — whether they realize it or not — the court treats it as if it had been pleaded all along, and either side can move to amend the pleadings to match, even after judgment; failing to amend doesn’t change the outcome of trying that issue. If a party objects to evidence as outside the pleadings, the court can allow amendment anyway, and should do so freely when it would help resolve the case on the merits and the objecting party can’t show real prejudice — the court can also grant a continuance to let that party respond to the new evidence.
Some amendments reach back in time. If the claim or defense in an amended pleading grew out of the same conduct, transaction, or occurrence described in the original pleading, the amendment relates back to the date the original pleading was filed. That relation-back rule extends to amendments that change or add a party, but only if, within the period Rule 4 allows for serving the summons and complaint, the new or changed party got enough notice of the case that a defense on the merits wouldn’t be prejudiced, and knew or should have known that but for a mistake, the action would have named that party from the start. Separately, a party can also ask the court for permission to file a supplemental pleading describing events that happened after the original pleading — even if that original pleading had its own defects — and the court can require the other side to respond to it on a schedule the court sets.
Frequently Asked Questions
Can I amend my complaint without asking the court?
Yes, once, as a matter of course — any time before a responsive pleading is served. If no response is required and the case hasn't reached the trial calendar, you can still amend within twenty days of serving the original pleading. After that, you need the court's leave or the other side's written consent.
What does it mean for an amendment to 'relate back'?
It means the amended pleading is treated as if it were filed on the date of the original pleading, as long as the new claim or defense arises from the same conduct, transaction, or occurrence already described. Adding or changing a party can also relate back, but only if that party got timely notice of the case and knew or should have known the suit belonged against them but for a mistake.
What happens if evidence at trial doesn't match the pleadings?
If both sides try the issue anyway, expressly or by implied consent, the court treats it as though it had been pleaded from the start, and the pleadings can be amended to match — even after judgment. If a party objects that the evidence goes beyond the pleadings, the court can still allow the amendment, and should do so freely when the objecting party can't show real prejudice to their case; that party can also ask for a continuance to respond.
Source & verification. The rule text is reproduced verbatim from the
official Rhode Island Superior Court Rules of Civil Procedure (R.I. Super. Ct. R. Civ. P. 15). Prescribed by the Supreme Court of Rhode Island (R.I. Gen. Laws § 8-6-2). The plain-English summary is original and written by us. Last verified July 8, 2026. ·
Official source
Also known as: amend a complaintamend a pleadingrelation back doctrinesupplemental pleadingamendment to conform to evidenceleave to amendchanging a party in a lawsuit