Mont. Code Ann. § 15-31-544
Whenever a return is required to be filed and the taxpayer files a fraudulent return or fails to file the return, the department may at any time assess the tax or begin a proceeding in court for the collection of the tax without assessment.
History: En. Sec. 1, Ch. 408, L. 1981; amd. Sec. 1, Ch. 222, L. 1983.