Washington statute
RCW 10.77.505 — Establishing insanity as a defense
Current through 2026 Regular Session
Part of Chapter 10.77: Criminally Insane—Procedures, Revised Code of Washington.
Full text of RCW 10.77.505
Statutory text current through the 2026 Regular Session. This publication reproduces the official text of the Revised Code of Washington from the Code Reviser's published files; it is not the official statutes of the State of Washington.
(1) Evidence of insanity is not admissible unless the defendant, at the time of arraignment or within ten days thereafter or at such later time as the court may for good cause permit, files a written notice of his or her intent to rely on such a defense.
(2) Insanity is a defense which the defendant must establish by a preponderance of the evidence.
(3) No condition of mind proximately induced by the voluntary act of a person charged with a crime shall constitute insanity.
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