Commonwealth Numbered Acts3. The Crimes (Taxation Offences) Act 1980*1* is in this Part referred to as the Principal Act. *1*No. 156, 1980, as amended. For previous amendments, see No. 123, 1984; No. 47 , 1985; Nos. 41, 48, 76 and 154, 1986; and Nos. 58 and 61, 1987.