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WA Governor Signs Tax on Millionaires Into Law with Challenges Expected
The tax is expected to generate $3–4 billion annually, funding education, health care, and tax relief for working families, while opponents plan legal and ballot challenges.
- On Monday, March 30, 2026, Washington Governor Bob Ferguson signed Senate Bill 6346 into law, establishing a 9.9% income tax on annual earnings exceeding $1 million.
- Supporters argued the measure addresses Washington's regressive tax system, while opponents contend it violates the Washington State Constitution because courts have historically classified income as "property".
- The tax takes effect January 1, 2028, affecting an estimated 21,000 filers and generating roughly $3 billion to $4 billion annually; Ferguson said it ensures residents pay their "fair share."
- Opponents, including the Citizen Action Defense Fund, plan to challenge the law's constitutionality in court, while the Washington State Republican Party aims to gather more than 300,000 signatures for a November repeal.
- Former Attorney General Rob McKenna anticipates the legal battle will reach the Washington State Supreme Court, as political groups debate whether to pursue a repeal ballot initiative this year or in 2027.
15 Articles
15 Articles
Bob Ferguson signs 'millionaire's tax' into law in Washington
A recent Association of Washington Business survey found 44 percent of employers are considering moving their personal residence out of state, citing taxes and cost pressures. Ferguson signed Senate Bill 6346 at 10:00 am in Olympia, finalizing Democrats’ effort to implement an income tax in a…
Ferguson signs Washington millionaires tax, legal fight looms
Income tax signed in Washington with a legal challenge close behind • Washington State Standard
Supporters of Washington's new income tax on millionaires celebrate as Gov. Bob Ferguson prepares to sign it on Monday, March 30, 2026, in Olympia. (Photo by Aspen Ford/Washington State Standard)Washington Democratic Gov. Bob Ferguson on Monday signed historic legislation creating an income tax, saying it is a critical step toward making the state’s system of taxation less regressive. The bill imposes a 9.9% levy on households with income above …
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