Cowlitz County
•
Washington (WA)
7 ZIP Code
Streamlined Sales Tax (SST) Member
Cowlitz County, WA Sales Tax Rates 2026
2026 sales tax rate guide for Cowlitz County, WA. Average combined tax rate is 7.87% with local jurisdictions ranging up to 8.20%.
Average Combined Rate
7.87%
Estimated Tax Range: 7.70% - 8.20%
⚡ Direct Tax Answer & Key Takeaway
As of 2026, the local county sales tax rate in Cowlitz County (Washington) is 1.20%. Combined sales tax rates across cities in this county range from 7.70% to 8.20% (averaging 7.87%).
County Tax
1.20%
Average Combined Rate
7.87%
Max Local Rate
8.20%
Indexed Cities
7
Cities & Towns in Cowlitz County
| City | Combined Sales Tax Rate | Action |
|---|---|---|
| Longview | 8.20% | View Tax Rates → |
| Kelso | 8.10% | View Tax Rates → |
| Woodland | 8.00% | View Tax Rates → |
| Kalama | 7.70% | View Tax Rates → |
| Castle Rock | 7.70% | View Tax Rates → |
| Ryderwood | 7.70% | View Tax Rates → |
| Cougar | 7.70% | 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
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Standard State
Rates current for 2026
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ZIP Codes in Cowlitz County
❓ Frequently Asked Questions
Key questions and answers regarding sales tax rates, exemptions, and compliance.