Mont. Code Ann. § 15-23-104 — Failure To File -- Estimate By Department -- Penalty

15-23-104 . Failure to file -- estimate by department -- penalty. (1) If any person fails to file a report or return within the time established in 15-23-103 or by a later date approved by the department, the department shall estimate the value of the property that should have been reported on the basis of the best available information. In estimating the value of the net proceeds of mines, the department shall proceed under 15-23-506 , and in estimating the value of the gross proceeds of coal mines, the department shall proceed under 15-35-107 . In estimating the value of all other property subject to assessment under parts 2 through 4 of this chapter, the department shall proceed under 15-1-303 . In estimating value under this section, the department may subpoena a person or the person's agent as specified in 15-1-302 . An assessment pursuant to parts 5, 7, and 8 of this chapter based on estimated value or imputed value is subject to review under 15-1-211 and mediation under 15-1-212 . For each month or part of a month that a report is delinquent, the department shall impose and collect a $25 penalty, with the total not to exceed $200, and shall deposit the penalty to the credit of the general fund. The department shall assess a penalty of 1% of the tax due for each month or part of a month that the report is delinquent. The department shall notify the county treasurer of each affected county of the amount of the penalty, and the treasurer shall collect the penalty in the same manner as the taxes to which the penalty applies.
(2) For a delinquency in reporting under 15-23-212 , the department shall assess a penalty of 1% of the tax due for each month or part of a month that the report is delinquent.