Mont. Code Ann. § 16-1-401

16-1-401 . Liquor excise tax. (1) Except as provided in subsection (3), the department shall collect at the time of the sale and delivery of any liquor as authorized under any provision of the laws of the state of Montana an excise tax at a rate that is the percent of the retail selling price determined in accordance with the following schedule based on all liquor sold and delivered in the state by a company that manufactured, distilled, rectified, bottled, or processed the liquor and sold the specified number of proof gallons of liquor nationwide in the calendar year preceding imposition of the tax pursuant to this section:

Nationwide production Tax rate Less than 20,000 proof gallons 3% 20,000 to 50,000 proof gallons 8% 50,001 to 200,000 proof gallons 13.8% Over 200,000 proof gallons 16%

(2) The department shall retain the amount of the excise tax received in a separate account and shall, in accordance with the provisions of 17-2-124 , deposit, to the credit of the general fund, the amount collected and received not later than the 10th day of each month.

(3) The following are exempt from the tax imposed by this section:

(a) flavors and other nonbeverage ingredients containing alcohol that are imported or purchased by a brewery under conditions set by the department as provided in 16-3-214 ; and

(b) necessary distilled spirits imported in bulk for use by a distillery or microdistillery under conditions set by the department as provided in 16-4-311 and 16-4-312 .