---
type: "Bill"
title: "Undoing the recent changes to the estate tax. (REVISED FOR ENGROSSED: Undoing certain changes to the estate tax.)"
description: "Undoing the recent changes to the estate tax. (REVISED FOR ENGROSSED: Undoing certain changes to the estate tax.)"
jurisdiction: "us/states/wa"
legislature: "Washington Legislature"
session: "2025-2026"
identifier: "SB 6347"
citation: "Washington SB 6347 (2025-2026)"
classification: ["bill"]
subjects: []
status: "enacted"
primary_sponsors: ["Kauffman"]
version_count: 3
action_count: 30
vote_count: 3
first_action: "2026-02-04"
last_action: "2026-03-24"
source: "openstates"
source_identifier: "ocd-bill/5aa82abf-93fe-498c-b3be-7f332b5330d1"
source_url: "https://app.leg.wa.gov/billsummary/?BillNumber=6347&Year=2025&Initiative=false"
source_hash: "ee91ec06f5879543953595ac1379d4ab07dfe7079419d19db9ca776d9633b8c1"
vintage: "2026-07-01"
source_snapshot: "https://data.openstates.org/daily/2026-07-01/public.pgdump"
retrieved_at: "2026-07-06"
confidence: "reported"
tags: ["legislation", "bill", "us-wa"]
---

# Washington SB 6347 (2025-2026) — Undoing the recent changes to the estate tax. (REVISED FOR ENGROSSED: Undoing certain changes to the estate tax.)

## Version chain

The bill's text revisions, in order — the diff chain from filing to enrollment.

1. **Bill** (committee substitute) — [source](http://lawfilesext.leg.wa.gov/Biennium/2025-26/Htm/Bills/Senate%20Bills/6347.htm)
2. **Engrossed Bill** (committee substitute) — [source](http://lawfilesext.leg.wa.gov/Biennium/2025-26/Htm/Bills/Senate%20Bills/6347.E.htm)
3. **Passed Legislature** (committee substitute) — [source](http://lawfilesext.leg.wa.gov/Biennium/2025-26/Htm/Bills/Senate%20Passed%20Legislature/6347.PL.htm)

## Votes

- Final Passage as Amended by the House (#5) — **39–10** (pass) · upper
- Final Passage as Amended by the House (#39) — **85–8** (pass) · lower
- 3rd Reading & Final Passage (#10) — **38–11** (pass) · upper

## Sponsors

- Kauffman — primary (person)
- Dhingra — cosponsor (person)
- Dhingra — cosponsor (person)
- Kauffman — cosponsor (person)
- Liias — cosponsor (person)
- Liias — cosponsor (person)
- Slatter — cosponsor (person)
- Slatter — cosponsor (person)

## Timeline

The legislative action history — every referral, reading, and vote.

- **2026-02-04** First reading, referred to Ways & Means. `reading-1`
- **2026-02-06** Public hearing in the Senate Committee on Ways & Means at 1:30 PM.
- **2026-02-09** Executive action taken in the Senate Committee on Ways & Means at 10:30 AM.
- **2026-02-09** WM - Majority; do pass. `committee-passage-favorable`
- **2026-02-09** Minority; do not pass. `committee-passage-unfavorable`
- **2026-02-09** Minority; without recommendation. `committee-passage-unfavorable`
- **2026-02-09** Passed to Rules Committee for second reading.
- **2026-02-12** Placed on second reading by Rules Committee. `reading-2`
- **2026-02-16** Floor amendment(s) adopted.
- **2026-02-16** Rules suspended. Placed on Third Reading. `reading-3`
- **2026-02-16** Third reading, passed; yeas, 38; nays, 11; absent, 0; excused, 0. `reading-3`
- **2026-02-17** First reading, referred to Finance. `reading-1`
- **2026-02-26** Public hearing in the House Committee on Finance at 8:00 AM.
- **2026-03-02** Executive action taken in the House Committee on Finance at 8:00 AM.
- **2026-03-02** FIN - Majority; do pass with amendment(s). `committee-passage-favorable`
- **2026-03-02** Minority; without recommendation. `committee-passage-unfavorable`
- **2026-03-02** Referred to Rules 2 Review. `referral-committee`
- **2026-03-06** Rules Committee relieved of further consideration. Placed on second reading. `reading-2`
- **2026-03-11** Committee amendment not adopted. `amendment-failure`
- **2026-03-11** Floor amendment(s) adopted.
- **2026-03-11** Rules suspended. Placed on Third Reading. `reading-3`
- **2026-03-11** Third reading, passed; yeas, 85; nays, 8; absent, 0; excused, 5. `reading-3`
- **2026-03-12** Senate concurred in House amendments.
- **2026-03-12** Passed final passage; yeas, 39; nays, 10; absent, 0; excused, 0. `passage`
- **2026-03-12** President signed. `passage`
- **2026-03-12** Speaker signed. `passage`
- **2026-03-13** Delivered to Governor. `executive-receipt`
- **2026-03-24** Governor signed. `executive-signature`
- **2026-03-24** Chapter 209, 2026 Laws. `became-law`
- **2026-03-24** Effective date 6/11/2026. `became-law`

## Source

OpenStates / OpenCivicData bulk snapshot [2026-07-01](https://data.openstates.org/daily/2026-07-01/public.pgdump); origin `ocd-bill/5aa82abf-93fe-498c-b3be-7f332b5330d1`. Confidence: reported (aggregated from official Washington legislature records).