Washington sales tax rate changes

Current Washington chart

The current Washington chart took effect October 1, 2026 and runs through December 31, 2026.

Every Washington jurisdiction on the loaded file is on the Washington rate chart.

• Washington sales tax rate chart

Changes on the current Washington chart

1 jurisdiction changed on the Q4 · Quarter 4 - Effective October 1, 2026 chart, compared with the previous Washington file.

The change took effect October 1, 2026.

Upcoming Washington changes

No upcoming Washington rate change is on file.

What is monitored

Washington Department of Revenue publishes the loaded sales tax chart for Washington.

The in-force chart is Q4 · Quarter 4 - Effective October 1, 2026, effective October 1 – December 31, 2026. The loaded file is a spreadsheet.

The loaded file has 403 jurisdiction rows.

A refresh fails closed. When the file cannot be read, or two readings disagree, the period is blocked and no rate is filled in.

This note does not calculate tax on a sale.

Official Washington sources

These are official Washington Department of Revenue pages. The current rate file is found from these pages. A direct rate-file address is not linked here.

• WA DOR Local sales and use tax

How the chart is checked

A refresh fails closed. When the file cannot be read, or two readings disagree, the period is blocked and no rate is filled in.

Nothing in this note is estimated. When a displayed figure disagrees with the official publication, the publication wins. That rule is recorded under corrections.

Rate monitoring is not a tax calculation

This note reports how the Washington publication is monitored. It does not calculate tax on a cart, invoice, ZIP code, or address, and it does not file a return.

Monitor Washington

Monitoring follows the official publication. The sample report shows the shape of a change row.

• Monitor Washington
• Sample report