Abstract
In 2016-2017 a landmark change was observed. The Competition and Consumer Act 2010 was amended in relation to Section 46 with the aim of strengthening the Competition law and policy in Australia and keep large corporations in check[1-2]. This essay will examine the impact of the replacement of the misuse of market power provision in old Section 46 with the effects test in the amended Act[3]. The purpose and impact of substantial lessening of competition under Section 46 would thus be examined with reference to case law and articles[4]