Rule 61.Harmless error
Part VII: Judgment · Not amended since adoption on record · Last verified July 13, 2026
Full Text of Rule 61
Plain-English Summary
Not every misstep at trial deserves a do-over. Rule 61 sets the harmless-error standard: an error in admitting or excluding evidence, or any other error or defect in a ruling, order, or in something a court or a party did or failed to do, isn't grounds for a new trial or for disturbing a judgment or order unless refusing to act on it would be inconsistent with substantial justice. The rule directs courts, at every stage of a case, to disregard errors or defects that don't affect the substantial rights of the parties.
In practice, this rule is the backstop behind Rule 59 new-trial motions and Rule 60 relief motions — it reminds courts and parties that identifying a mistake is only the first step. The real question is whether the mistake mattered enough to have changed the outcome or denied someone a fair proceeding. A minor evidentiary slip that had no real bearing on the result doesn't unravel an otherwise sound judgment.
Frequently Asked Questions
What does "harmless error" mean in a civil case?
It means a mistake — in an evidence ruling, an order, or something a court or party did or didn't do — that had no real effect on the outcome. Rule 61 tells courts to disregard those mistakes rather than granting a new trial or disturbing the judgment over them.
Does every mistake at trial entitle me to a new trial?
No. Rule 61 requires a court to leave a judgment alone unless refusing to act on the error would be inconsistent with substantial justice — in other words, unless the mistake affected a party's substantial rights.
How does this rule interact with a Rule 59 motion for a new trial?
Rule 59 lists grounds like evidentiary error or irregularity that can support a new trial. Rule 61 works alongside it as a filter: even if one of those grounds is technically present, the court still disregards it if it didn't affect the parties' substantial rights.