Mercer Advisors
Sharing Knowledge

Question

When do the new Washington estate tax rates take effect?

Answer

SB 6347 was signed March 24, 2026. The law restores the lower rate structure for deaths on or after July 1, 2026.
(There is also an overall effective date of June 11, 2026, but the rate change most people focus on is tied to date of death.)

Related FAQs

Does Washington estate tax apply if I live outside Washington but own property there?

How are Washington estate tax rates changing under SB 6347?

Who has to file a Washington estate tax return?
Financial Planning Tax Planning Tax Basics Illiquid Investments Protecting Your Legacy Generational Wealth Inherited Wealth Year-Round Tax Planning FAQs
Last Updated May 20, 2026
Previous Next

Further Learning

Listen
Investment Management Podcast

Episode 525 – Investment Philosophy vs. Strategy

Discover how your core beliefs shape investment decisions. John Walker and Jason O’Meara break down philosophy vs. strategy for long-term success.

Women & Wealth Article

Beyond Business Growth: Wealth Planning for Women Founders

Many women founders face a three-way financial pull. Learn how to help protect personal wealth, optimize taxes, and plan your business exit — all at once.

Estate Planning Article

Illinois Estate Tax: What High-Net-Worth Families Need To Know

Illinois’ $4 million estate tax exemption, far below the $15 million federal threshold, can expose high-net-worth families to unexpected state tax bills without proactive planning.

man meeting with a financial advisor in office, shaking hands
What Clients Ask Article

Questions to Ask When Choosing a Financial Advisor

Discover the essential questions to ask when choosing a financial advisor — covering fiduciary duty, compensation models, and team approach.

Back to Sharing Knowledge

About Mercer Advisors

We exist so you don’t have to worry about money. For more than 40 years, we’ve taken the sophisticated, time-tested approach that many ultra-high net worth individuals use to help manage their financial lives and made it accessible to more families.

Explore Our Solutions

Financial Planning
Estate Planning
Tax Planning & Preparation
Insurance Solutions
Investment Management
Trustee Services

Want to learn more about Mercer Advisors?

Let’s Talk