This resource outlines Sharing Solutions impact assessment framework, designed to help food retailers across Europe map, track, and optimize the sustainability impacts of food redistribution. As food loss accounts for significant greenhouse gas emissions and resource depletion, this document provides a high-level overview of how retailers can quantify the environmental and social benefits of their surplus food. It introduces Sharing Solutions' approach to evidence-based reporting, helping donors align their redistribution activities with Corporate Social Responsibility (CSR) and ESG goals. The framework is intended for: - Current Donors: Looking to optimize donation practices and generate annual impact reviews. - New Donors: Seeking guidance on navigating local regulations and identifying food-sharing initiatives in their locality.