The indicators of progress towards global nutrition targets similarly show that the world is not on track to eliminate all forms of malnutrition (SDG Target 2.2). Billions of people still lack access to nutritious, safe and sufficient food. Nevertheless, progress in many countries provides hope of the possibility of getting back on track towards hunger and malnutrition eradication. Implementing the policies, investments and legislation needed to revert the current trends of hunger, food insecurity and malnutrition requires proper financing for food security and nutrition. Despite a broad agreement on the urgent need to increase financing for food security and nutrition, the same cannot be said for a common understanding regarding how this financing should be defined and tracked. The report provides a long-awaited definition of financing for food security and nutrition and guidance for its implementation. There are recommendations regarding the efficient use of innovative financing tools and reforms to the food security and nutrition financing architecture. Establishing a common definition of financing for food security and nutrition, and methods for its tracking, measurement and implementation, is an important first step towards sustainably increasing the financing flows needed to end hunger, food insecurity and all forms of malnutrition, and to ensure access to healthy diets for all, today and tomorrow.