The NSW Biodiversity Offsets Policy for Major Projects clarifies, standardizes, and improves biodiversity offsetting for major project approvals. A key principle underpinning the policy is that offset requirements should be based on a reliable and transparent assessment of biodiversity losses and gains. The Framework for Biodiversity Assessment (FBA), which can only be applied by an accredited ecological consultant, can be used by a proponent to determine appropriate biodiversity offset for a major project.