In the paper author explores idiosyncratic types of prohibited acts, located in articles 65 § 1a and 1b, 67 § 2 and 69a § 1a of fiscal criminal code. He concludes that part of provisions consists only punishable variants of attempt of acts prohibited in art. 65 § 1 and 69a § 1 of fiscal criminal code and the other part are sui generis preparations to prohibited acts. He also proposes replacing singular provisions in part special by complete regulation in part general of the fiscal criminal code.