This working paper is aimed at researchers and others interested in understanding and classifying policy and practical approaches to migrant irregularity. Addressing irregular migration has become an important focus within the migration policy field. Policymakers tend to emphasise the need to address irregular arrivals, yet in fact have a wide range of policy responses at their disposal. MIrreM research has highlighted the wide range of policy responses to the presence of irregular migrants, including how policies provide pathways into and out of irregularity (Hendow et al., 2024); this working paper aims to classify them within a typology. It builds on the existing MIrreM conceptualisation of migrant irregularity (Kraler & Ahrens, 2023), focusing on the intersection between the pathways into and out of irregularity and the stocks of irregular migrants.