This toolkit offers guidance to government, non-governmental and international actors providing (or planning to provide) assistance to displaced populations, to help them consider whether and how NGO/ internationally-led humanitarian assistance might be linked with state-led social protection, based on analysing the key contextual factors and actors in their displacement setting. The toolkit first offers a brief overview of the range of possible approaches for linking humanitarian assistance and social protection in a displacement setting, and of the outcomes (both benefits and drawbacks) that may result. Two other toolkits in this series discuss in detail how these approaches can impact on specific areas of concern – namely, social cohesion (Commins et al., 2022), and basic needs and well-being (Hagen-Zanker et al., 2022). The toolkit then provides guidance for analysing the key contextual factors and actors that are likely to influence which approach NGO/international actors might opt for in a given displacement setting (considering political, financial and technical feasibility and desirability) and what its benefits and drawbacks might be, drawing on examples from the three country case studies.