Changing testimony after a deposition is possible, but only through a formal correction process with a short deadline and real trade-offs. Under Federal Rule of Civil Procedure 30(e), the witness (the “deponent”) can review the transcript and submit written changes within 30 days, but the right to do so must be requested before the deposition ends.1Legal Information Institute. Federal Rules of Civil Procedure Rule 30 – Depositions by Oral Examination Miss that request or that deadline and the transcript stands as-is. And even when a correction is submitted properly, the original answer stays in the record and can be used against you at trial.
Ask for Transcript Review Before the Deposition Ends
This is the step most witnesses don’t know about, and it controls everything that follows. Rule 30(e) only applies if the deponent or a party asks for transcript review before the deposition wraps up. If no one makes that request on the record, the right to submit corrections is waived.1Legal Information Institute. Federal Rules of Civil Procedure Rule 30 – Depositions by Oral Examination The court reporter notes in the official certificate whether review was requested, so there’s no arguing later that you meant to ask.
A well-prepared attorney will make the request as a matter of routine before closing. If you’re the witness and your lawyer hasn’t raised it, ask. Once the deposition is over without that request on the record, this route to changing your testimony is closed.
The 30-Day Window and the Errata Sheet
Once the court reporter tells the witness the transcript is available for review, a 30-day clock starts. Within that window, the witness must review the transcript, complete the errata sheet, sign it, and return it.1Legal Information Institute. Federal Rules of Civil Procedure Rule 30 – Depositions by Oral Examination Missing that deadline generally forfeits the right to make any changes at all, including obvious transcription errors.
The errata sheet is the formal document for submitting corrections. The court reporter provides it along with the finished transcript. For each correction, the sheet must identify:
- The page and line number of the testimony being changed
- The original text as the transcript records it
- The proposed corrected text
- The reason for the change
The witness signs the completed sheet, and the court reporter attaches it to the official transcript. The original answers are not deleted or overwritten. Both versions become part of the permanent record, and the trier of fact decides which to credit.1Legal Information Institute. Federal Rules of Civil Procedure Rule 30 – Depositions by Oral Examination
State court rules often look similar but not identical. Some jurisdictions give more or fewer days, and some add procedural steps. If your case is in state court, confirm the deadline with your attorney rather than assuming the federal 30 days applies.
What Kinds of Changes Are Allowed
Corrections fall into two categories that courts treat very differently.
Transcription errors, sometimes called scrivener’s errors, are mistakes the court reporter made while recording: a misspelled name, an incorrect date, a garbled technical term. Fixing these is routine and rarely draws pushback.
Substantive changes alter the meaning of what the witness said. Turning a “yes” into a “no,” adding facts that didn’t come up during questioning, or revising a key detail based on a refreshed memory all qualify. The text of Rule 30(e) permits changes “in form or substance,” so substantive corrections are allowed on the face of the rule.1Legal Information Institute. Federal Rules of Civil Procedure Rule 30 – Depositions by Oral Examination But federal courts are split on how far a witness can actually go: most take the rule at face value, some limit corrections to transcription errors, and some allow clarifications but not outright contradictions. Which view controls in your case is a question for your attorney. In every jurisdiction, the witness must give a reason for each change, and in every jurisdiction, the original answer remains in the record.
Writing the Reason for a Change
The reason field is where most witnesses trip up. For a transcription error, something brief like “court reporter misheard the name” is enough. For a substantive change, writing “mistake” or “correction” without more context is a red flag that invites a challenge from the opposing side. A credible reason might be that you misspoke about a date, realized the error after reviewing documents, or confused details about two similar events. The more specific and plausible the explanation, the more likely a court will accept the change.2American Bar Association. Pretrial Discovery Strategies – Defending Against a Deponent’s Errata Sheet The reason you write will be read by opposing counsel, the judge, and potentially a jury.
What Changing Your Testimony Can Cost You
Submitting a substantive change doesn’t mean the change quietly replaces the original. Because both versions stay in the record, the other side has several ways to use the contradiction against you.
Impeachment at Trial
The most immediate consequence is impeachment on cross-examination. A witness can be questioned about any prior inconsistent statement, and the opposing attorney can introduce the original deposition answer as evidence.3Legal Information Institute. Federal Rules of Evidence Rule 613 – Witness’s Prior Statement If you first testified a traffic light was green and later changed the answer to red on the errata sheet, the jury hears both versions. That inconsistency can be devastating to credibility, especially when the witness struggles to explain why the change was made.
The Sham Errata Problem
When a party moves for summary judgment, courts can disregard errata sheet changes that look designed to manufacture a factual dispute where none existed. The standard most courts apply: if the changed testimony is “incredible and unexplained,” the court can treat the original answer as the operative testimony. If the witness provides a plausible reason for the discrepancy, the contradiction becomes a credibility question for the jury rather than a reason for the court to strike the change.
Timing matters. A change filed shortly after the opposing side moves for summary judgment draws intense skepticism, even if the content of the change is reasonable on its face.
Re-Deposition and Sanctions
Rule 30(e) is silent on whether the opposing party can reopen the deposition to question the witness about errata changes. In practice, courts sometimes allow limited follow-up questioning, particularly when the changes are substantial and the reasons thin. In extreme cases, a court may impose sanctions on a witness or party who submits bad-faith changes, including requiring payment for additional proceedings or striking the changes entirely. That outcome is rare, but it exists as a backstop against abuse.
Practical Advice Before You Submit an Errata Sheet
If something in your transcript is wrong, the errata process exists for exactly that reason. How you use it matters as much as whether you use it.
Confirm review was requested before the deposition ended. Without that request on the record, you have no right to submit an errata sheet at all.
Read the transcript carefully against the documents and records that relate to your testimony. Genuine errors are easier to identify, and easier to explain, when you can point to a specific document that contradicts the transcript.
Write detailed, honest reasons for every change. “I reviewed my appointment calendar and realized I had the date wrong” is far more persuasive than “error.”
Don’t use the errata sheet to rethink strategy. Courts and experienced litigators can tell the difference between a witness correcting a genuine mistake and a witness trying to take back a damaging answer. Changes that read as though the legal team drafted them tend to backfire, weakening the witness’s credibility on every other point in the deposition as well.