Except as provided in 76-13-905, a person who sets or leaves a fire that spreads and damages or destroys property of any kind not belonging to the person is subject to a civil penalty of not less than $50 or more than $500.
Civil Penalty For Setting Or Leaving Fire Causing Damage
Mont. Code Ann. § 50-63-102, under General Provisions.
Mont. Code Ann. § 50-63-102