Sales tax calculator · 2026
Montana (MT) has no state sales tax. No state or local sales tax
Montana (MT) has no state sales tax.
Sales tax is a consumption tax imposed on the sale of goods and certain services. In Montana, the state rate is 0.00%. There are no local sales taxes — the state rate applies statewide.
Sales Tax Formula
Tax Amount = Purchase Price × (0% ÷ 100)
Total Price = Purchase Price + Tax Amount
Example Calculation
A $100 purchase in Montana:
Sales tax = $100 × 0% = $0.00
Total = $100.00
Most tangible personal property is subject to sales tax in Montana. Services may or may not be taxable — Montana, like most states, exempts most services.Common exemptions and special rates include groceries, prescription drugs, and clothing (rules vary by state).
Out-of-state sellers may need to collect Montana sales tax if they have economic nexus in the state. Most states now require remote sellers with over $100,000 in sales or 200 transactions to register and collect sales tax (South Dakota v. Wayfair, 2018). If you sell products to MT customers, check whether you need to register with the Montana Department of Revenue.
The MT state sales tax rate is 0.00% as of 2026. There are no local sales taxes, so the rate is 0.00% statewide. The combined maximum rate in Montana is 0.00%.
If you have physical presence (store, office, warehouse) in Montana, you must collect sales tax. If you sell online to MT customers and exceed economic nexus thresholds (typically $100K in sales or 200 transactions), you must also collect. Register with the Montana Department of Revenue for a sales tax permit.
Montana generally does not tax services, though there are exceptions such as. Examples include telecommunications, cable TV, and fabricated product labor. Check with a tax professional for your specific service.
Multiply the purchase price by 0% (state rate). For example, a $100 purchase = $0.00 tax, total $100.00. Since there are no local taxes, the state rate is the final rate. Use our calculator above for any amount.