Formal animal welfare impact assessment, analogous to environmental impact assessment, is an emerging tool for systematically evaluating how policy decisions affect animal wellbeing across sectors from agriculture to transport.
Animal welfare impact assessment faces methodological challenges including how to quantify and compare welfare across species, how to weigh individual suffering against population-level effects, and how to handle uncertainty about animal sentience. Despite these challenges, formal assessment requirements create institutional pressure to consider welfare explicitly rather than treating it as an afterthought. The most effective frameworks combine welfare science metrics with broader ethical principles and stakeholder engagement. Integration of welfare assessment into standard regulatory processes represents one of the most potentially influential policy reforms for improving animal welfare at scale.