Washington rate changes, Q4 · Quarter 4 - Effective October 1, 2026

In force

Washington Department of Revenue. This official chart has jurisdictions that changed or were new, effective October 1, 2026.

1 jurisdiction.

Rate changes. Previous is the prior printed rate. Current rate is the figure in effect, or Ended and the printed end date when the tax left the chart. Change (pts) is that move in percentage points, not a percent of the old rate. A known prior rate that left the chart moves to zero. Change effective is the official date. Verified is the time the file was retrieved.
Jurisdiction	Previous	Current rate	Change (pts)	Change effective	Verified	Source
MattawaWashington · WA · 1308	8.4%	8.3%	−0.1	October 1, 2026	October 7, 2026 at 6:15 AM UTC	Official source Saved workbook

The full list is included with a plan.