Washington · 2025-2026 Biennium (69th Legislature)

Undoing the recent changes to the estate tax. (REVISED FOR ENGROSSED: Undoing certain changes to the estate tax.)

AN ACT Relating to undoing certain changes to the estate tax;

ESB 6347·Senate·Bill

Sen. Claudia KauffmanState Senate · LD-47·3 cosponsors

Fiscal noteState YesLocal No

Effective dateJune 11, 2026

Primary sponsor

Claudia KauffmanState Senate · LD-47

Cosponsors

Vandana SlatterState Senate · LD-48

Manka DhingraState Senate · LD-45

Marko LiiasState Senate · LD-21

Floor votes

Senate · 3rd Reading & Final Passage · ESB 6347Feb 16, 202638–11

House · Final Passage as Amended by the House · ESB 6347Mar 11, 202685–8

Senate · Final Passage as Amended by the House · ESB 6347Mar 12, 202639–10

Legislative history

Feb 4, 2026

First reading, referred to Ways & Means.

Feb 9, 2026

WM - Majority; do pass.

Feb 9, 2026

Minority; do not pass.

Feb 9, 2026

Minority; without recommendation.

Feb 9, 2026

Passed to Rules Committee for second reading.

Feb 12, 2026

Placed on second reading by Rules Committee.

Feb 16, 2026

Floor amendment(s) adopted.

Feb 16, 2026

Rules suspended. Placed on Third Reading.

Feb 16, 2026

Third reading, passed; yeas, 38; nays, 11; absent, 0; excused, 0.

Feb 17, 2026

First reading, referred to Finance.

Mar 2, 2026

FIN - Executive action taken by committee.

Mar 2, 2026

FIN - Majority; do pass with amendment(s).

Mar 2, 2026

Minority; without recommendation.

Mar 2, 2026

Referred to Rules 2 Review.

Mar 6, 2026

Rules Committee relieved of further consideration. Placed on second reading.

Mar 11, 2026

Committee amendment not adopted.

Mar 11, 2026

Floor amendment(s) adopted.

Mar 11, 2026

Rules suspended. Placed on Third Reading.

Mar 11, 2026

Third reading, passed; yeas, 85; nays, 8; absent, 0; excused, 5.

Mar 12, 2026

Senate concurred in House amendments.

Mar 12, 2026

Passed final passage; yeas, 39; nays, 10; absent, 0; excused, 0.

Mar 12, 2026

President signed.

Mar 12, 2026

Speaker signed.

Mar 13, 2026

Delivered to Governor.

Mar 24, 2026

Governor signed.

Mar 24, 2026

Chapter 209, 2026 Laws.

Mar 24, 2026

Effective date 6/11/2026.

Bill text

Original Bill Engrossed Bill Bill as Passed Legislature

Amendments

Floor amendment by Kauffman (Adopted)Floor amendment by Kauffman (Adopted)Floor amendment by Dufault (Out of order)Committee amendment by Finance (Not adopted)Floor amendment by Scott (Out of order)Floor amendment by Scott (Out of order)Floor amendment by Scott (Out of order)Floor amendment by Scott (Not adopted)Floor amendment by Stokesbary (Adopted)Floor amendment by Walen (Out of order)

Bill reports

Senate Bill Report (Orig.) — Initial Bill Report 02-06-26 Senate Bill Report — Testimony Added 02-06-26 Senate Bill Report — Reported by WM 02-09-26 Engrossed Senate Bill Report — Passed Senate 02-16-26 Engrossed House Bill Analysis 2026 — Initial House Analysis 02-26-26 Engrossed House Bill Report — Reported by FIN 03-02-26 Engrossed House Bill Report — Passed House 03-11-26 Engrossed Senate Bill Report — Amended by House 03-11-26 Final Bill Report — Final Bill Report 2026

Session law

Chapter 209, Laws of 2026