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Income Tax Archive

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Understanding Washington’s Millionaires’ Tax: What Business Owners and High Income Taxpayers Should Know About Senate Bill 6346

After extensive legislative debate, Washington enacted Engrossed Substitute Senate Bill 6346 (SB 6346), Chapter 238, Laws of 2026,… Read More

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Washington State Millionaires’ Tax Signed — What Happens Next?

On March 30, 2026, Washington Governor Bob Ferguson signed Senate Bill 6346, which enacted a 9.9% tax on annual income over $1 mil… Read More

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The Millionaires’ Tax and Other Proposed Washington State Tax Legislation

Written by Christian Rodrigues, Eric Nix, and Grant Shaver. Originally published 2/18/2026. Updated 3/13/26 to include an update o… Read More