Benton County
•
Washington (WA)
8 ZIP Code
Streamlined Sales Tax (SST) Member
Benton County, WA Sales Tax Rates 2026
2026 sales tax rate guide for Benton County, WA. Average combined tax rate is 8.67% with local jurisdictions ranging up to 8.80%.
Average Combined Rate
8.67%
Estimated Tax Range: 8.10% - 8.80%
⚡ Direct Tax Answer & Key Takeaway
As of 2026, the local county sales tax rate in Benton County (Washington) is 1.60%. Combined sales tax rates across cities in this county range from 8.10% to 8.80% (averaging 8.67%).
County Tax
1.60%
Average Combined Rate
8.67%
Max Local Rate
8.80%
Indexed Cities
5
Cities & Towns in Benton County
| City | Combined Sales Tax Rate | Action |
|---|---|---|
| Kennewick | 8.80% | View Tax Rates → |
| Richland | 8.80% | View Tax Rates → |
| West Richland | 8.70% | View Tax Rates → |
| Prosser | 8.70% | View Tax Rates → |
| Benton City | 8.70% | View Tax Rates → |
📋 State Tax Rules & Compliance Guide
Sourcing Rule:
Destination-based
Groceries & Food:
Exempt (0%)
Clothing & Apparel:
Taxable
SaaS & Digital Goods:
Fully Taxable (Digital automated services / prewritten software)
Economic Nexus Threshold:
$100,000 combined gross receipts
Official Tax Authority:
Washington State Department of Revenue ↗
Interactive Sales Tax Calculator
Calculate exact sales tax and total purchase price instantly.
Address-Specific Rates
SST Member
Standard State
Rates current for 2026
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State Tax:
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ZIP Codes in Benton County
❓ Frequently Asked Questions
Key questions and answers regarding sales tax rates, exemptions, and compliance.