The Washington State Legislature’s first day for the 2026 regular session is Monday, January 12, 2026. This session will be a short one, lasting up to 60 days, with an expected end date of March 12, 2026. The 2026 session is the second year of the legislative cycle and will be a “short” session as it’s an even-numbered year.
https://leg.wa.gov/bills-meetings-and-session/session/session-documents/latest-session-documents/