What is the sales tax in Big Arm city? - The sales tax in Big Arm city of Montana is 0% as of 2025. Use the Big Arm sales tax calculator to calculate the sales tax for any purchase in Big Arm.
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Below is a list of the state sales tax, city sales tax, and county tax rate for Big Arm.
| County | State | City | Zip Code | State Tax | City Tax | County Tax | Total Tax |
|---|---|---|---|---|---|---|---|
| Lake | Montana | Big Arm | 59910 | 0% | 0% | 0% | 0% |