https://www.cityofmattawa.com/
City of Mattawa, Washington - home
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https://www.avalara.com/us/en/taxrates/state-rates/washington/cities/mattawa.html
2026 Mattawa, Washington Sales Tax Calculator & Rate | Avalara
Find the 2026 Mattawa sales tax rate. Use our tax calculator to get sales tax rates by state, county, zip code, or address.
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