The goal of this document is to provide the key principles of social investment in Asia, based on an extensive literature review and in-depth interviews with a range of experts. Mapped across the life-cycle of a project, these are broad, high-level principles that work for investments encompassing the SDGs, with specific examples from areas of healthcare, gender, livelihoods and climate in Asia. For social investors looking to incorporate the SDG Impact Standards developed by UNDP12 in their work, the principles can serve as an accessible pathway to provide direction.