Mont. Code Ann. § 15-67-204
15-67-204 Penalty and interest for delinquent fee
15-67-204 . (Temporary) Penalty and interest for delinquent fee. If the fee for any intermediate care facility is not paid on or before the due date of the report as provided in 15-67-201 , penalty and interest, as provided in 15-1-216 , must be added to the fee. (Void on occurrence of contingency--sec. 17, Ch. 531, L. 2003--see chapter compiler's comment.)