GRAND COULEE Sales Tax Overview
As of 2026, GRAND COULEE, Washington has a combined sales tax rate of 8.4%. This rate includes the Washington state tax of 6.5% plus applicable county and local taxes.
This rate applies to most taxable goods and services purchased within the 99133 zip code area. Some items such as groceries, prescription drugs, and clothing may be exempt depending on Washington state law.
GRAND COULEE Tax Examples
* Based on rate of 8.4%. Verify with your exact zip code.
GRAND COULEE Zip Codes & Tax Rates
| Zip Code | Combined |
|---|---|
| 99133 | 8.4% |
Frequently Asked Questions
What is the sales tax rate in GRAND COULEE, WA?
The sales tax rate in GRAND COULEE, WA is 8.4% as of 2026. This includes the 6.5% Washington state tax plus any county and city taxes.
How many zip codes are in GRAND COULEE, WA?
GRAND COULEE, WA has 1 zip code in our database: 99133.
How much is sales tax on a $100 purchase in GRAND COULEE?
On a $100 purchase in GRAND COULEE, WA you would pay approximately $8.40 in sales tax at the average rate of 8.4%, for a total of $108.40.
Is GRAND COULEE's sales tax rate higher than the Washington average?
Use our calculator to compare GRAND COULEE's rate of 8.4% against other cities in Washington. Visit the Washington state page for the statewide average.