The Australian Competition and Consumer Commission (ACCC) supports the introduction of a mandatory suspensory merger control regime and changes to the substantive competition test. This proposal is being tested alongside two other policy options presented in a merger control consultation paper issued by Treasury on 20 November 2023 (Consultation Paper). The consultation on the proposed merger control regime (Consultation) is a step towards the most significant change proposed to Australian merger control laws in recent years. Interested parties should use this process to make submissions to the Treasury’s Competition Taskforce (Taskforce) by 19 January 2024.