Benton County, Washington sales tax rate: 8.4%
The county-wide general sales tax rate in Benton County, Washington is 8.4%, of which 6.5% is the Washington state rate. Some cities and districts add more, up to 8.8% in Kennewick.
Breakdown of the highest rate, 8.8%
| Level | Jurisdiction | Rate |
|---|---|---|
| State | Washington | 6.5% |
| County | Benton County | 0.0% |
| City | Largest city in county | 2.3% |
| Special | Transit / district | 0.0% |
Neighboring counties
- Franklin County, WA 8.1%
- Grant County, WA 8.2%
- Klickitat County, WA 7.6%
- Morrow County, OR 0.0%
- Umatilla County, OR 0.0%
- Walla Walla County, WA 8.9%
- Yakima County, WA 8.2%
Other counties in Washington
- Adams County 8.0%
- Asotin County 8.2%
- Chelan County 8.4%
- Clallam County 8.6%
- Clark County 8.5%
- Columbia County 8.2%
- Cowlitz County 7.7%
- Douglas County 8.4%
- Ferry County 8.0%
- Franklin County 8.1%
- Garfield County 8.2%
- Grant County 8.2%
- Grays Harbor County 8.9%
- Island County 9.0%
- Jefferson County 9.2%
- King County 8.9%
- Kitsap County 9.2%
- Kittitas County 8.3%
- Klickitat County 7.6%
- Lewis County 8.0%
- Lincoln County 8.0%
- Mason County 8.6%
- Okanogan County 8.0%
- Pacific County 8.2%
- Pend Oreille County 7.7%
- Pierce County 8.1%
- San Juan County 8.35%
- Skagit County 8.6%
- Skamania County 7.7%
- Snohomish County 9.1%
- Spokane County 8.9%
- Stevens County 8.0%
- Thurston County 8.3%
- Wahkiakum County 7.8%
- Walla Walla County 8.9%
- Whatcom County 8.6%
- Whitman County 7.9%
- Yakima County 8.2%
Rates as of Jan 2026. Source: EvvyTools US Sales Tax Rates by ZIP Code (2026). General rate on tangible goods; not tax advice. Verify with your state Department of Revenue before filing or pricing.