Mont. Code Ann. » Mont. Code Ann. Title 26, ch. 10 · Article VII. Opinions and Expert Testimony
Montana Code Annotated

Mont. R. Evid. 701 (2026)

Opinion testimony by lay witnesses

✓ current as of May 2026
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Rule 701. Opinion testimony by lay witnesses.

If the witness is not testifying as an expert, the witness' testimony in the form of opinions or inferences is limited to those opinions or inferences which are (a) rationally based on the perception of the witness and (b) helpful to a clear understanding of the witness' testimony or the determination of a fact in issue.

History: Ad. Sup. Ct. Ord. 12729, Dec. 29, 1976, eff. July 1, 1977; amd. Sup. Ct. Ord. June 7, 1990, eff. June 7, 1990.