Sales tax in Wahkiakum County, Washington
The sales tax rate in Wahkiakum County, Washington is 7.8%. That is a 6.5% state rate, and it is the same at every address in the county.
What is the sales tax rate in Wahkiakum County?
| Washington state rate | 6.5% |
|---|---|
| Combined rate | 7.8% |
Why the rate here is not the whole story
Washington charges 6.5 percent statewide and then cities, counties, transit authorities and other special purpose districts add local rates whose boundaries do not follow county lines, so a single rate for the whole county does not exist. The Department of Revenue publishes one combined local rate for each location code and does not split out the county's own share of it, so the county rate is recorded as unknown here rather than estimated. Washington counties do levy taxes of their own that apply countywide. Both of the location codes the Department publishes inside this county carry the same 7.8 percent total today, but that is the current result rather than a legal ceiling, because a city or a district here could add its own rate in a future quarter.
How do I find the exact rate for an address in Wahkiakum County?
The rate is the same across Wahkiakum County, but if you are collecting tax it is worth confirming against the source. Use Washington's own lookup. A vendor's calculator is not the state speaking.
Who has to collect sales tax in Wahkiakum County?
A seller with a physical presence in Washington collects at the rate for the address where the sale takes place. A remote seller collects once it passes Washington's economic nexus threshold, which is a separate question from the rate and is covered on our sales tax nexus checker. Marketplace facilitators generally collect on behalf of their sellers.
How does Wahkiakum County compare?
See Washington sales tax for the statewide picture, including the average local rate and what is exempt. Property tax is a separate tax with separate rules: property tax in Wahkiakum County.
Sources
- Wahkiakum County rates: Washington Department of Revenue, Local Sales and Use Tax Rates by City/County, Q326_Excel_LSU-rates-alpha.xlsx, edition effective July 1 2026 through September 30 2026, https://dor.wa.gov/sites/default/files/2026-05/Q326_Excel_LSU-rates-alpha.xlsx
- Collected and verified September 9, 2026. Confidence: P on the rate components, P on the range (P read on a primary agency page, S strong but indirect, U unverified).