What is the sales tax in Grand Coulee city? - The sales tax in Grand Coulee city of Washington is 8.4% as of 2025. Use the Grand Coulee sales tax calculator to calculate the sales tax for any purchase in Grand Coulee.
Grand Coulee Sales Tax Calculator |
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Below is a list of the state sales tax, city sales tax, and county tax rate for Grand Coulee.
| County | State | City | Zip Code | State Tax | City Tax | County Tax | Total Tax |
|---|---|---|---|---|---|---|---|
| Grant | Washington | Grand Coulee | 99133 | 6.5% | 1.9% | 0% | 8.4% |