Idaho Sales Tax Rates: Washington County
Washington County, Idaho Sales Tax Rate 2026 Up to 6%
While many counties do levy a countywide sales tax, Washington County does not. The Idaho sales tax of 6% applies countywide. None of the cities or local governments within Washington County collect additional local sales taxes.
Here's how Washington County's maximum sales tax rate of 6% compares to other counties around the United States:
- Higher maximum sales tax than 77% of Idaho counties
- Lower maximum sales tax than 77% of counties nationwide
Tax Rates By City in Washington County, Idaho
The total sales tax rate in any given location can be broken down into state, county, city, and special district rates. Idaho has a 6% sales tax and Washington County collects an additional N/A, so the minimum sales tax rate in Washington County is 6% (not including any city or special district taxes). This table shows the total sales tax rates for all cities and towns in Washington County, including all local taxes.
| City | Sales Tax Rate | Tax Jurisdiction |
|---|---|---|
| Weiser | 6% | Washington |
| Cambridge | 6% | Cambridge |
| Midvale | 6% | Midvale |
Idaho Sales Tax Rates by Zip Code:
Need an updated list of Idaho sales tax rates for your business? Download our Idaho sales tax database!
Washington County, Idaho has a maximum sales tax rate of 6% and an approximate population of 7,481.
Sales tax rates in Washington County are determined by three different tax jurisdictions, Cambridge, Midvale and Washington.
Back to Idaho Sales Tax Handbook Sales tax rates for Washington County are current as of June 2026
Tax compliance done right
Tired of manually handling sales taxes? Avalara can automate your multi-state sales tax returns, let you know when you've triggered nexus, and more. Request a free demo of Avalara today.