The Australian Packaging Covenant Organisation (APCO) is a not-for-profit organisation, established to measure and promote progress towards committed 2025 national targets focused on reduction and recycling of packaging materials. Two groups of annual reports are made publicly available on the APCO website into 2023, both of which offer novel opportunities for accountability and engagement with a multitude of stakeholders. We question the effectiveness of both reporting processes through an accountability lens. The Annual Report and Action Plan (ARAP) offers an individual report for each member organisation. The ARAP offers some transparency, through the provision of simplified and largely qualitative information about packaging performance, presented in accordance with a defined framework of reporting responsibilities. However, the largely meaningless and repetitive reporting language of the ARAP, enables limited insight into actual packaging achievements, or related corporate targets. We argue therefore, that accountability achieved through the ARAP is limited. The second report, the Australian Packaging Consumption and Recycling Data (APCRD), presents a consolidation of related performance measures for members as a whole. The APRCD suggests transparency through a much more extensive range of quantified performance disclosures. However, those quantifications are entirely consolidated, and so provide no accountability for the performance of individual companies. Here we argue that the potential for effective accountability in this unique context of reporting by APCO, a not-for-profit organisation, on behalf of multiple members, is not achieved.