Since 1994 the IÖW/future Ranking of Sustainability Reports regularly assesses the extra-financial reports of the largest German companies on the one hand and small and medium-sized enterprises (SMEs) on the other. The basis of the assessment is a comprehensive set of social, environmental, management and communication-related criteria that has been continuously developed. As a result, the project delivers both an overview of the state of sustainability reporting in Germany and a ranking of the best reporter. The criteria and the results are interpreted industry-specific and separately for large firms and SMEs. All information and publications related to the ranking are available on the project website www.ranking-nachhaltigkeitsberichte.de.