Statewide legal status
Washington lists psilocybin and psilocyn as Schedule I controlled substances. Unauthorized possession remains unlawful; Washington has not enacted statewide personal-use decriminalization.
WA legal and access quick reference
Reviewed on October 4, 2026 by iMD teamPsilocybin law and access in Washington
A concise, source-dated explanation of statewide law, regulated access, and the difference between state and local policy.
Laws and implementation can change quickly. This page is educational information, not legal advice.
Programs and services
Washington has no general statewide psilocybin service-center, dispensary, or retail program.
UW pilot · 2026 medical-access proposal
Washington’s University of Washington psilocybin therapy pilot remains authorized through June 30, 2027, subject to funding and federal pathways. In 2026, SB 5921 advanced from the Senate Health & Long-Term Care Committee to Ways & Means and proposed a broader clinician-supervised medical program, including inpatient treatment and an outpatient microdose pathway; the bill did not become law.
What local policy means
Washington has documented municipal actions in Seattle and Tacoma. Those actions affect local priorities only; they do not create statewide legalization, licensed retail, or medical suitability.
2026 Washington psilocybin policy and research update
Washington’s existing University of Washington psilocybin therapy pilot remains part of state law through June 30, 2027. UW’s PsiloStudy evaluated psilocybin with psychological support for veterans and first responders with both alcohol use disorder and PTSD; the study stopped recruiting new participants on June 26, 2026 after progressing through enrollment.
SB 5921, introduced for the 2026 session as the Washington Medical Psilocybin Act, proposed a Department of Health-regulated program for adults 18 and older who are appropriate candidates for medical psilocybin treatment. The proposal included clinician-supervised inpatient services and an outpatient microdose model, along with producer licensing, training, safety standards, and patient protections. The Senate Health & Long-Term Care Committee recommended passage on February 3, 2026 and referred the bill to Ways & Means; it was not enacted.
Cities covered by the Washington guide
The statewide explanation above covers Bellevue, Bellingham, Everett, Kirkland, Seattle, Spokane, Tacoma and Vancouver. A separate page appears below only where a documented municipal action adds material local context.
BellevueCovered in Washington guide
BellinghamCovered in Washington guide
EverettCovered in Washington guide
KirklandCovered in Washington guide
SeattleDocumented local policySpokaneCovered in Washington guide
TacomaDocumented local policyVancouverCovered in Washington guide
Sources used for this review
This review prioritizes Washington statutes, official bill history and committee reports, and University of Washington program information. National sources are secondary cross-checks.
- Washington Legislature — Schedule I and possession law (RCW 69.50) ↗
- Washington Legislature — 2SSB 5263, Chapter 364 (2023) ↗
- Washington Legislature — Final bill report for 2SSB 5263 ↗
- Washington Legislature — RCW 19.410.010: University of Washington psilocybin pilot ↗
- Washington Legislature — SB 5921 (2026) bill history ↗
- Washington Legislature — SB 5921 Health & Long-Term Care report ↗
- University of Washington — PsiloStudy for alcohol use disorder and PTSD ↗
Common questions
Is psilocybin legal in Washington?
Washington lists psilocybin and psilocyn as Schedule I controlled substances. Unauthorized possession remains unlawful; Washington has not enacted statewide personal-use decriminalization. Washington has no general statewide psilocybin service-center, dispensary, or retail program.
Does Washington have a regulated psilocybin access program?
Washington has no general statewide psilocybin service-center, dispensary, or retail program. The University of Washington pilot is limited and does not establish public service centers or retail access.
Do city policies change Washington law?
No. Seattle and Tacoma policies affect local priorities only. They do not legalize commercial sale, create statewide possession rights, or override Washington or federal law.
What changed in Washington psilocybin policy and research in 2026?
The University of Washington psilocybin therapy pilot remained authorized through June 30, 2027, and UW’s PsiloStudy progressed through participant enrollment before closing recruitment in June 2026. SB 5921 also advanced out of the Senate Health & Long-Term Care Committee and proposed a broader medical psilocybin program, including an outpatient microdose pathway, but it did not become law.
Continue at the right depth
The product-site link provides product-format and business-policy information. It does not change the law described on this page or establish legal access in any jurisdiction.