SB 6347 Washington Senate · 2025-2026 Regular Session

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

This bill restores Washington's pre-2025 estate tax rates by amending the tax calculation tables in law. It directly affects estates of decedents dying in Washington with taxable assets exceeding $1 million, reversing recent increases implemented in 2025. The key provision replaces current tax brackets with historical rates, such as lowering the tax rate for estates between $2 million and $3 million from 17% to 15% for deaths after July 2026. The change ensures the state's estate tax aligns with rates in effect before July 1, 2025, without altering federal tax relationships.
Bill status signed all 5 stages cleared
Introduction
Feb 2026
Committee Review
Mar 2026
Senate Passage
Mar 2026
House Passage
Mar 2026
Signed into Law
Mar 2026
Introduced Feb 4, 2026 Signed Mar 24, 2026
Maddy AI version diff · 2 comparisons

What changed between versions

Engrossed Bill Passed Legislature · 3 edits
MINOR
The bill was amended to add a new definition section (RCW 83.100.020) establishing specific dollar amounts and rules for the Washington estate tax exclusion, while also updating the referenced statute numbers in the text. This ensures the law clearly defines how the tax exclusion is calculated based on the date of death and adjusts for inflation starting in 2027.
Scope change
The bill's scope now explicitly includes a new section defining key terms and the applicable exclusion amount, expanding the legislative text to cover both the definition of the tax base and the calculation of the exemption.
DEFINITION

Added a new section (RCW 83.100.020) containing detailed definitions for terms like 'applicable exclusion amount', 'decedent', 'gross estate', and 'taxpayer'.

TIMELINE

Updated the list of exclusion amounts to include specific thresholds for deaths occurring in 2026 and 2027, including a new inflation adjustment mechanism for 2027 and beyond.

TECHNICAL

Corrected the section numbers referenced in the bill text from '83.100.040 and 2025 c 421 s 202' to '83.100.020 and 2025 c 421 s 201' to match the new structure.

Floor votes · Senate Feb 16, 2026 · House Mar 11, 2026

How they voted

3912
Passed
Total votes 51
Feb 16, 2026
D Democratic31
20 Yea 11 Nay
64% Yea
R Republican20
19 Yea 1 Nay
95% Yea
Vote distribution
All Yea All Nay Mixed No data
Full legislative history

Actions timeline

Total actions
30
Key actions
16
Committee
10
Amendments
1
Mar 24, 2026
Signed into law
Governor signed.
executive
Mar 12, 2026
Lower · Passed
Speaker signed.
lower
Mar 12, 2026
Upper · Passed
President signed.
upper
Mar 12, 2026
Upper · Passed
Passed final passage; yeas, 39; nays, 10; absent, 0; excused, 0.
upper
Mar 12, 2026
Upper · Passed
Senate concurred in House amendments.
upper
Mar 11, 2026
Lower · Passed
Floor amendment(s) adopted.
lower
Mar 11, 2026
Amended
Committee amendment not adopted.
lower
Mar 2, 2026
Committee
Referred to Rules 2 Review.
lower
Mar 2, 2026
Lower · Passed
Minority; without recommendation.
lower
Mar 2, 2026
Lower · Passed
FIN - Majority; do pass with amendment(s).
lower
Mar 2, 2026
Lower · Passed
Executive action taken in the House Committee on Finance at 8:00 AM.
lower
Feb 26, 2026
Lower · Passed
Public hearing in the House Committee on Finance at 8:00 AM.
lower
Feb 16, 2026
Upper · Passed
Floor amendment(s) adopted.
upper
Feb 9, 2026
Upper · Passed
Minority; without recommendation.
upper
Feb 9, 2026
Upper · Passed
Minority; do not pass.
upper
Feb 9, 2026
Upper · Passed
WM - Majority; do pass.
upper
Feb 9, 2026
Upper · Passed
Executive action taken in the Senate Committee on Ways & Means at 10:30 AM.
upper
Feb 6, 2026
Upper · Passed
Public hearing in the Senate Committee on Ways & Means at 1:30 PM.
upper
1 primary · 3 co-sponsors

Sponsors