Washington Income Tax Fight Intensifies as Businesses Threaten to Leave
The Center Square YT
•May 19th, 2026
DESCRIPTION
Washington’s political and legal battle over the newly enacted millionaire’s income tax continues escalating as lawmakers defend the legislation while business groups warn the state’s tax climate is driving employers, investors, and wealthy residents out of Washington.
During a recent event at the Washington Supreme Court ceremonial swearing-in for Justice Theo Angelos, Center Square reporter Carleen Johnson spoke directly with State Senator Jamie Peterson — the primary sponsor of Washington’s income tax legislation — about growing legal and economic concerns surrounding the tax.
⚖️ TOP STORY: JAMIE PETERSON DEFENDS INCOME TAX LAW
Peterson defended both the legislation and communications involving the Attorney General’s Office, arguing:
Consultation between lawmakers and the AG’s office is “absolutely normal”
Tax measures are not subject to referendum under Washington’s constitution
The Washington Supreme Court has already clarified the issue legally
Peterson said:
“Article two, section one of the Constitution says it’s not subject to referendum.”
He also argued the language included in the bill simply clarified guidance for the Secretary of State’s Office and did not alter the constitutional reality surrounding tax measures.
When asked about growing concerns surrounding wealthy residents and business owners leaving Washington, Peterson responded:
“Time will tell.”
💰 BUSINESS GROUPS WARN OF ‘EXODUS’
The episode also featured comments from Heather Andrews, Western Regional Director for Americans for Prosperity, who sharply criticized Washington lawmakers for ignoring widespread opposition to the tax.
Andrews argued:
Washington lawmakers ignored more than 100,000 sign-ins opposing the legislation
The cumulative burden of taxes and regulations is accelerating business departures
Employers increasingly view Washington as economically hostile
She cited:
The 2025 tax package totaling roughly $9.4 billion
The new 9.9% millionaire’s income tax
Rising regulatory burdens on employers
According to Andrews:
“The cumulative burden is now driving all of the people that are the major contributors to the economy out of the state.”
📊 CONCERNS OVER BUSINESS CLIMATE
The discussion highlighted growing fears surrounding:
Wealth migration
Business relocation
Startup retention
Job losses
Economic competitiveness
Andrews claimed:
One in four Washington employers are now considering leaving the state
The trend has sharply accelerated over the past year
Seattle has become a focal point for concerns involving taxes and regulation
The interview also referenced:
Starbucks layoffs
Technology sector concerns
Fintech company departures
Regulatory burdens on employers statewide
🗳️ REPEAL EFFORTS AND LEGAL CHALLENGES CONTINUE
Opponents of the tax are currently pursuing two major strategies:
1️⃣ Citizen Initiative Campaign
Let’s Go Washington is gathering signatures for a repeal initiative targeting the tax. Organizers hope to gather approximately 400,000 signatures ahead of the July 2 deadline.
2️⃣ Constitutional Lawsuit
A separate lawsuit led by the Citizen Action Defense Fund continues moving through the courts with support from:
Former Attorney General Rob McKenna
Former Washington Supreme Court Justice Phil Talmadge
Attorney Jackson Maynard
The lawsuit argues the tax violates longstanding Washington constitutional precedent treating income as property.
🧠 WHY THIS MATTERS
This impacts:
Taxes
Businesses
Constitutional law
Economic growth
Washington’s long-term competitiveness
The income tax battle is quickly becoming one of the defining legal and political issues in Washington state.
📅 WHAT’S NEXT
Signature gathering continues statewide
Constitutional lawsuits move forward
Additional business leaders expected to speak out
Washington Supreme Court likely to remain central to the dispute
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