The Joint Impact Model Foundation was established in 2022 to create credible oversight of the Joint Impact Model (JIM) and its development. Characterized by its harmonized and transparent methodology, the JIM is a model which enables the quantification of indirect jobs, value added, and greenhouse gas (GHG) emissions related to investments of financial institutions. The aim of the JIM is to bring comparability, accountability, and transparency to the financial industry. Using input data such as revenue and power production from investment portfolios, the JIM enables users to estimate financial flows through the economy and its resulting economic (value added), social (employment) and environmental (greenhouse gas emissions) impact. These impacts can be used to measure and report on the contribution of individual institutions to the Paris Agreement and the UN Sustainable Development Goals. The JIM is a crucial tool in the efforts against climate change, since measuring and reporting on impact in a consistent and comparable way is essential to evaluate progress towards global development needs and priorities, assess effectiveness of investments and drive impactful actions.