Washington Enacts New “Millionaires Tax”

At a Glance Washington has enacted a new tax aimed at high-income households. Under ESSB 6346, the state will impose a 9.90% tax on Washington taxable income beginning January 1, 2028. This is not a general tax on all income and it is not framed as a tax on wealth or...

Washington Authorizes Prepayment of Capital Gains Tax

Washington has passed HB 1376, a technical but significant update to the state’s capital gains tax procedures. This bill provides a new timing mechanism for taxpayers to better align their state tax payments with federal tax planning. Key Provisions of HB 1376...

Washington Estate Tax Update: New Rates and Limits for 2026

Washington’s estate tax landscape is shifting. Under ESB 6347, several key changes have been enacted that will impact estate planning for deaths occurring in 2026 and beyond. This legislation effectively rolls back previous high-rate increases, restoring a more...

Washington’s ESSB 5814 Penalty Relief Program

A limited-time chance to reduce penalty exposure for newly taxable services Updated: March 03, 2026 Starting Oct. 1, 2025, Washington expanded retail sales tax (and retailing B&O) to several service categories under ESSB 5814. For a plain-English overview of what...