Washington Sales Tax Rates: Grant County
Grant County, Washington Sales Tax Rate 2026 Up to 8.5%
A county-wide sales tax rate of 1.7% is applicable to localities in Grant County, in addition to the 6.5% Washington sales tax.
Some cities and local governments in Grant County collect additional local sales taxes, which can be as high as 0.3%.Here's how Grant County's maximum sales tax rate of 8.5% compares to other counties around the United States:
- Lower maximum sales tax than 64% of Washington counties
- Higher maximum sales tax than 72% of counties nationwide
Tax Rates By City in Grant County, Washington
The total sales tax rate in any given location can be broken down into state, county, city, and special district rates. Washington has a 6.5% sales tax and Grant County collects an additional 1.7%, so the minimum sales tax rate in Grant County is 8.2% (not including any city or special district taxes). This table shows the total sales tax rates for all cities and towns in Grant County, including all local taxes.
| City | Sales Tax Rate | Tax Jurisdiction |
|---|---|---|
| Moses Lake | 8.5% | Moses Lake |
| Ephrata | 8.4% | Douglas Ptba |
| Quincy | 8.4% | George |
| Mattawa | 8.4% | Mattawa |
| Royal City | 8.2% | Grant |
| Warden | 8.4% | George |
| Soap Lake | 8.4% | Soap Lake |
| Grand Coulee | 8.4% | Grand Coulee |
| Electric City | 8.2% | Grant |
| Coulee City | 8.2% | Grant |
| Beverly | 8.2% | Grant |
| Marlin | 8.2% | Grant |
| Hartline | 8.2% | Grant |
| Stratford | 8.2% | Grant |
| George | 8.4% | George |
| Wilson Creek | 8.2% | Grant |
Washington Sales Tax Rates by Zip Code:
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Grant County, Washington has a maximum sales tax rate of 8.5% and an approximate population of 65,595.
Sales tax rates in Grant County are determined by seven different tax jurisdictions, Douglas Ptba, George, Grand Coulee, Grant, Mattawa, Moses Lake and Soap Lake.
Back to Washington Sales Tax Handbook Sales tax rates for Grant County are current as of June 2026
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