Supported by Evidencetaxation

Washington state income tax passed the Senate and is expected to be signed into law by Governor Ferguson

Published March 13, 2026Updated March 13, 2026

Summary

Washington State Senate passed Senate Bill 5335 establishing a 7% income tax on capital gains exceeding $250,000 on March 11, 2025, with a vote of 26-23. Governor Bob Ferguson has indicated he will sign the measure, which would direct revenue primarily to K-12 education funding and other state services.

Primary Sources

Official legislative record of Senate Bill 5335, establishing a capital gains excise tax

Seattle Times - WA Senate passes income tax billNews Report

Reports on Senate passage of income tax legislation and expected signature by Governor Ferguson

Documents state budget priorities including K-12 education and human services funding

Evidence Supporting the Claim

  • The Washington State Senate passed Senate Bill 5335 on March 11, 2025, by a vote of 26-23, establishing a capital gains tax structure
  • Governor Bob Ferguson has publicly stated his support for the income tax measure and indicated he will sign it into law
  • The legislation directs the majority of revenue to the state general fund for K-12 schools, human services, and universities
  • The bill imposes a 7% tax on capital gains exceeding $250,000 per year for individuals

Evidence Against / Context

  • The measure has not yet been signed into law as of March 13, 2025, making the claim premature regarding final enactment
  • Legal challenges to the tax structure are anticipated based on Washington's constitutional restrictions on income taxation

Timeline

  • Governor Bob Ferguson inaugurated as Washington Governor

  • Senate Bill 5335 introduced in Washington State Legislature

  • Washington State Senate passes SB 5335 with 26-23 vote

  • Bill awaits Governor Ferguson's signature

What This Means

Structured interpretation — not opinion

  • Key takeaway 1

    If signed, Washington would become one of nine states with a capital gains tax structure, though legal challenges regarding its classification as an income tax versus excise tax are likely

  • Key takeaway 2

    The revenue generated would supplement state funding for education and social services, areas identified as budget priorities in the 2025-2027 biennium

  • Key takeaway 3

    The threshold of $250,000 means the tax would primarily affect higher-income earners and those with significant investment gains

  • Key takeaway 4

    Washington has historically rejected income taxes through voter initiatives, making this legislative approach a significant shift in state tax policy

Related Claims in taxation

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