Policy-makers are frequently required to consider and manage conflicting public values. An example of this in the environmental domain is biodiversity offset policy, which governments worldwide have adopted as a mechanism to balance environmental protection with socio-economic development. However, little work has examined administrative practices underpinning biodiversity offset policy implementation, and how the adoption of coping strategies to manage value conflicts may influence resulting policy outcomes. This study fills this research gap using a case study of Australia's federal biodiversity offset policy under the Environment Protection and Biodiversity Conservation (EPBC) Act 1999.Using data from 13 interviews of federal policy administrators, I show that the introduction of a new policy in 2012 enabled a shift from the use of precedent to a technical approach for setting offset requirements under the EPBC Act. Yet, multiple sources of policy ambiguity remain, and administrators have adopted post-approval condition-setting, or 'backloading'-a form of cycling, facilitated by structural separation-to defer detailedThis is an open access article under the terms of the Creative Commons Attribution-NonCommercial-NoDerivs License, which permits use and distribution in any medium, provided the original work is properly cited, the use is non-commercial and no modifications or adaptations are made.