Mont. Code Ann. § 44-4-1206

The law enforcement agency of a county in which a sobriety program exists shall collect the testing fee required by the rules of the department and deposit the fees into the local sobriety program account established pursuant to department rules. The fee must be distributed according to those rules to the proper entity for use by the law enforcement agency or the law enforcement agency's designee pursuant to the terms determined by the law enforcement agency in accordance with the provisions of this part and the rules implementing this part.