This paper provides an overview of how to evaluate different blended finance instruments and mechanisms, including equity instruments, debt instruments, first loss capital, guarantees and insurance, development impact bonds, performance-based grants, structured funds and syndicated loans. It is structured along the most important and common questions evaluators seek to answer, including how to measure the mobilisation of additional financial resources, and assessing results. It provides a description of the most appropriate methods and tools for answering these questions, highlighting their advantages and disadvantages, and discusses their application.