What is the sales tax in Post Falls city? - The sales tax in Post Falls city of Idaho is 8.1% as of 2025. Use the Post Falls sales tax calculator to calculate the sales tax for any purchase in Post Falls.
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Below is a list of the state sales tax, city sales tax, and county tax rate for Post Falls.
| County | State | City | Zip Code | State Tax | City Tax | County Tax | Total Tax |
|---|---|---|---|---|---|---|---|
| Kootenai | Idaho | Post Falls | 83854 | 6.5% | 0% | 1.6% | 8.1% |