Walla Walla County, Washington Sales Tax Rate
The combined sales tax rate in Walla Walla County, Washington is 8.3% as of 2026. That includes the Washington state rate of 6.5%.
Literal combined state (6.5%) and local rate for the DOR location code.
Unincorporated-area rate.
Sales tax calculator for Walla Walla County
- Sales tax (8.3%)
- $8.30
- Total with tax
- $108.30
How this rate is composed
The Washington state sales tax rate is 6.5%. The combined 8.3% rate for Walla Walla County comes from Washington DOR local sales & use tax rates (Q3 2026) (2026-07-01 to 2026-09-30).
County rows are the unincorporated-area rate; incorporated cities are listed separately.
Rates change on official schedules — confirm the current rate and effective date against the source above before filing. Reviewed and current as of September 14, 2026.
Managing tax for a business?
For a street-address estimate, use the sales tax calculator. If you are closing a period, managing exempt customers, or replacing spreadsheets, start with the software buyer’s guide or choose your next workflow.
Related local sales tax rates in Washington
Compare the county and same-type jurisdictions with the closest combined rates.
Walla Walla County sales tax questions
What is the sales tax rate in Walla Walla County, Washington?
The combined sales tax rate is 8.3%. It includes the Washington state rate of 6.5% and applicable local rates.
How much sales tax is charged on a $100 purchase in Walla Walla County?
At the 8.3% combined rate, a $100 taxable purchase produces $8.30 in sales tax.
When was the Walla Walla County sales tax rate reviewed?
Prophit.ai reviewed this guide on 2026-09-14 using Washington DOR local sales & use tax rates (Q3 2026). Confirm the official source before filing because rates can change.