Mont. Code Ann. § 15-68-110 — Collection Of Sales Tax And Use Tax -- Listing Of Business Locations And Agents -- Severability

15-68-110 . Collection of sales tax and use tax -- listing of business locations and agents -- severability. (1) A person engaging in the business of selling property or services subject to taxation under this chapter shall collect the sales tax from the purchaser and pay the sales tax collected to the department.
(2) A person engaging in business within this state shall, before making any sales subject to this chapter, obtain a seller's permit, as provided in 15-68-401 , and at the time of making a sale, whether within or outside the state, collect the sales tax imposed by 15-68-102 from the purchaser and give to the purchaser a receipt, in the manner and form prescribed by rule, for the sales tax paid.
(3) The department may authorize the collection of the sales tax imposed by 15-68-102 by any retailer who does not maintain a place of business within this state but who, to the satisfaction of the department, is in compliance with the law. When authorized, the person shall collect the use tax upon all property and services that, to the person's knowledge, are for use within this state and subject to taxation under this chapter.
(4) All sales tax and use tax required to be collected and all sales tax and use tax collected by any person under this chapter constitute a debt owed to this state by the person required to collect the sales tax and use tax.
(5) A person engaging in business within this state that is subject to this chapter shall provide to the department:
(a) the names and addresses of all of the person's agents operating within this state; and
(b) the location of each of the person's distribution houses or offices, sales houses or offices, and other places of business within this state.
(6) If any application of this section is held invalid, the application to other situations or persons is not affected.