The Senate Economics References Committee is inquiring into tax avoidance and aggressive minimisation by corporations registered in Australia and multinational corporations operating in Australia, including looking at the adequacy of Australia’s current laws. The Committee held a public hearing in Perth on 28 April 2017, where it heard from representatives of Woodside Energy Limited, BHP Billiton, ExxonMobil Australia, Shell Australia, BP Australia, Chevron Australia, the ATO, the WA Department of Mines and WA Treasury. Discussion of the Petroleum Resource Rent Tax (PRRT) occupied much of the hearing. The Committee is due to report by 30 September 2017.