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Amending pleadings in Texas: the seven-day line and the substitute-pleading rule

Texas procedure · Last verified August 17, 2026

Texas is generous about amending pleadings and strict about how you do it. Both halves of that are in the rules, and people tend to learn the second half the hard way.

Free amendment, until seven days before trial

Rule 63 lets parties amend their pleadings, respond to pleadings on file, file suggestions of death and make representative parties, and file other pleas "by filing such pleas with the clerk at such time as not to operate as a surprise to the opposite party."

No motion. No leave. No numbered limit on amendments. File it.

Then the proviso, which sets the line:

provided, that any pleadings, responses or pleas offered for filing within seven days of the date of trial or thereafter, or after such time as may be ordered by the judge under Rule 166, shall be filed only after leave of the judge is obtained, which leave shall be granted by the judge unless there is a showing that such filing will operate as a surprise to the opposite party.

Two things are worth pulling out.

Seven days from trial, not from any other event. The line moves when the trial date moves. A continuance reopens the window.

Leave is not discretionary in form. Rule 63 says leave "shall be granted … unless there is a showing that such filing will operate as a surprise to the opposite party." The default is yes, and the burden of producing the showing sits with the party resisting the amendment.

Rule 63 also lets a judge move the line. A pretrial order under Rule 166 can set an earlier deadline, and if it does, amendments after that date need leave.

At Level 3, this becomes mandatory. Rule 190.4(b)(4) requires every court-ordered discovery control plan to include deadlines for joining additional parties, amending or supplementing pleadings, and designating expert witnesses.

An amendment is a replacement, not a patch

Rule 64 is short, procedural, and the source of a lot of avoidable trouble:

The party amending shall point out the instrument amended, as "original petition," or "plaintiff's first supplemental petition," or as "original answer," … and shall amend by filing a substitute therefor, entire and complete in itself, indorsed "amended original petition," … accordingly as said instruments of pleading are designated.

Texas doesn't do amendments by interlineation or by adding a paragraph. An amended pleading is a whole new document that stands alone, endorsed with the right label, that identifies which instrument it replaces.

Rule 65 explains why that matters:

Unless the substituted instrument shall be set aside on exceptions, the instrument for which it is substituted shall no longer be regarded as a part of the pleading in the record of the cause

The old pleading drops out. Anything left out of the amendment is out of the case. A party who files an "amended answer" containing only a new affirmative defense has, by the text of Rule 65, abandoned the general denial that was in the original.

Rule 65 preserves two narrow reasons to look back at a superseded pleading: a complaint that the court erred in deciding the necessity of the amendment or in superseding it, with an exception taken; and a question of limitation.

Amendment vs. supplement

Rule 64's list of labels distinguishes an "amended original petition" from a "first supplemental petition," and the difference isn't cosmetic. An amended pleading replaces. A supplemental pleading adds to what's on file, in response to the other side's last pleading. Rule 65's replacement rule applies to the instrument that was substituted — which is why using the wrong label can quietly delete a pleading a party meant to keep.

Amending during trial — Rule 66

Rule 66 handles the situation where the pleadings turn out to be wrong once the evidence starts.

If evidence is objected to at trial on the ground that it isn't within the issues made by the pleading, or if any defect, fault or omission in a pleading — of form or of substance — is called to the court's attention during trial, 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 subserved thereby and the objecting party fails to satisfy the court that the allowance of such amendment would prejudice him in maintaining his action or defense upon the merits.

Same structure as Rule 63: amendment is the default, and the objecting party carries the burden. Rule 66 also gives the court a middle path — it may grant a postponement to let the objecting party meet the new evidence.

Issues tried without pleadings — Rule 67

Rule 67 covers what happens when everyone tries an issue nobody pleaded. Issues not raised by the pleadings but tried by express or implied consent "shall be treated in all respects as if they had been raised in the pleadings."

A conforming amendment may be made by leave of court, on motion of any party, at any time up to submission of the case to the court or jury — and failing to amend doesn't affect the result of the trial of those issues.

There's one limit. Rule 67 preserves the requirement that written pleadings, before submission, are necessary to submit jury questions under Rules 277 and 279. Consent gets an issue tried; it doesn't get it into the charge without a pleading.

Defects nobody objects to are waived

Rule 90 is the reason exceptions get filed at all:

Every defect, omission or fault in a pleading either of form or of substance, which is not specifically pointed out by exception in writing and brought to the attention of the judge in the trial court before the instruction or charge to the jury or, in a non-jury case, before the judgment is signed, shall be deemed to have been waived by the party seeking reversal on such account

Rule 90 also abolishes general demurrers, and carries an important proviso: the waiver rule "shall not apply as to any party against whom default judgment is rendered." A defaulting defendant keeps complaints about the petition that an appearing defendant would have waived.

Amendments with their own deadlines

Some pleadings can be amended, but on a different clock.

Verified denials. Rule 93's list of matters that must be sworn ends with a provision for the matters in subdivisions (a) and (g): such a denial may be made in original or amended pleadings, "but if in amended pleadings the same must be filed not less than seven days before the case proceeds to trial."

Counterclaims that arise late. Rule 97(d): a claim that matured or was acquired by the pleader after filing may be presented as a counterclaim by amended pleading.

Pleadings that change the case's track. Rule 169(c) treats a pleading that seeks relief beyond the expedited-actions cap as removing the case from that process — and such a pleading may not be filed without leave unless it's filed before the earlier of 30 days after the discovery period closes or 30 days before trial. Leave may be granted only if good cause outweighs prejudice.

Discovery responses. Rule 193.5(b) governs amending discovery responses rather than pleadings, but shares the seven-day instinct in a stricter form: an amended or supplemental response made less than 30 days before trial is presumed not to have been made reasonably promptly.

Dropping a claim without amending

Rule 165 handles the smallest version of a change: "A party who abandons any part of his claim or defense, as contained in the pleadings, may have that fact entered of record, so as to show that the matters therein were not tried."

For dropping a whole claim, Rule 162 is the nonsuit rule. A plaintiff may dismiss or take a nonsuit at any time before introducing all evidence other than rebuttal evidence. Notice must be served under Rule 21a on any party who has answered or been served. But a nonsuit doesn't prejudice an adverse party's right to be heard on a pending claim for affirmative relief, doesn't excuse costs, and has no effect on a pending motion for sanctions, attorney fees or other costs.

Evictions don't follow these rules

Rule 510.1(b) excludes the other rules of civil procedure from eviction cases. Rule 510.12 is the whole of eviction amendment practice: a party may withdraw something from or add something to a pleading before trial; a party may move to require another party to clarify a pleading; if the court finds a pleading insufficient it must order an amendment and set a date, and may strike the pleading if the order isn't followed. One limit governs all of it — "A pleading amendment must not delay the trial date."

Where these rules live

For forms and step-by-step help, the Texas courts point to TexasLawHelp.org. This page explains what the rules say. It isn't legal advice.

How this guide is sourced. Every procedural statement here is drawn from the text of the rules named above, each of which is reproduced verbatim on its own page on this site. Quoted rule language appears in quotation marks or block quotes; everything else is original writing. Last verified August 17, 2026.
This page explains what the rules say. It is legal information, not legal advice, and it cannot tell you how a rule applies to your situation. Deadlines are often short and some are not extendable — if the outcome matters, talk to a lawyer or your court’s self-help center.