Part 4 · Relevance And its Limits

Rule 401. Test for Relevant Evidence

Amended January 1, 2026 (current)

Evidence is relevant if:

(a) it has any tendency to make a fact more or less probable than it would be without the evidence; and

(b) the fact is of consequence in determining the action.

Comment. This rule is identical to F.R.E. 401. Whether evidence has a tendency to make a given fact more or less probable is to be determined by the court in the light of reason, experience, scientific principles and the other testimony offered in the case. The relevance of proposed evidence may be dependent on evidence not yet of record. Under Pa.R.E. 104(b), the court may admit the proposed evidence on the condition that the evidence supporting its relevance be introduced later. Official Note Adopted May 8, 1998, effective October 1, 1998; rescinded and replaced January 17, 2013, effective March 18, 2013. Committee Explanatory Reports : Final Report explaining the January 17, 2013 rescission and replacement published with the Court’s Order at 43 Pa.B. 651 (February 2, 2013).