Voice interconnection services access determination inquiry

The ACCC has released a draft report which sets out the ACCC's draft position in relation to the price and non-price terms and conditions of access for the voice interconnection services.

The ACCC’s draft position on the price terms are informed by the outputs of a draft cost model developed by Analysys Mason. Analysys Mason has prepared a report on the draft cost model and an operating manual. In response to the previous consultation, Analysys Mason also finalised the model specification paper.

Consultation on WACC methodology

The ACCC is reviewing its approach to determining the weighted average cost of capital (WACC). The ACCC intends to develop a general methodology that informs its consideration of WACC across regulatory decision-making processes including the voice interconnection services inquiry.

The ACCC has engaged Cambridge Economic Policy Associates (CEPA) Australia to advise on the methods that the ACCC should adopt. We are consulting on the methodologies proposed by CEPA Australia as part of this inquiry and the review of the NBN replacement module application. CEPA Australia has prepared a report on draft WACC methodologies and a note on WACC estimates applicable to the voice interconnection services.

The ACCC invited submissions in response to the draft report and associated consultation package by 5pm (AEST) Wednesday 3 September 2025. We welcomed feedback from stakeholders from non-telecommunications industries or stakeholders who were not directly engaged with the voice interconnection services access determinations inquiry on the WACC methodology proposed by CEPA Australia.