Laws: “Scott v Commissioner of Taxation (1935)” “Brent v Federal Commissioner of Taxation (1971) ATC 4195” “Section 6-5 of the ITAA 1997” “Hobbs v Hussey (1942) 24 TC 153” Applications: As defined under “section 6-5 of the ITAA 1997” ordinary income includes all the income that are generally derived by the taxpayer from most of the sources (Murphy & Higgins, 2016).