ISSAQUAH Sales Tax Overview
As of 2026, ISSAQUAH, Washington has an average combined sales tax rate of 10.5%, with rates varying across 3 zip codes from 10.5% to 10.5%. This rate includes the Washington state tax of 6.5% plus applicable county and local taxes.
Different areas within ISSAQUAH may have different rates due to special tax districts, transit authority taxes, or other local levies. It is important to use your exact zip code when calculating taxes for purchases, business filings, or compliance purposes.
ISSAQUAH Tax Examples
* Based on average rate of 10.5%. Verify with your exact zip code.
ISSAQUAH Zip Codes & Tax Rates
Frequently Asked Questions
What is the sales tax rate in ISSAQUAH, WA?
The average sales tax rate in ISSAQUAH, WA is 10.5% as of 2026. This includes the 6.5% Washington state tax plus any county and city taxes.
How many zip codes are in ISSAQUAH, WA?
ISSAQUAH, WA has 3 zip codes in our database: 98027, 98029, 98075.
How much is sales tax on a $100 purchase in ISSAQUAH?
On a $100 purchase in ISSAQUAH, WA you would pay approximately $10.50 in sales tax at the average rate of 10.5%, for a total of $110.50.
Is ISSAQUAH's sales tax rate higher than the Washington average?
Use our calculator to compare ISSAQUAH's rate of 10.5% against other cities in Washington. Visit the Washington state page for the statewide average.