Sustainability development issues are taking on an increasingly important role in business activities and have great potential to contribute to the future economic and social development of the world. Corporate social responsibility represents a concept of strategic management of one's own resources by balancing economic, social, and environmental goals. Systematic sustainability reporting is the foundation of transparency and accountability in the economy. The need for analyzing corporate sustainability reporting arises from the growing importance of sustainability in modern business practices. In this paper, the subject of research is the analysis of 50 corporate sustainability reports in the Republic of Croatia for the year 2022. The primary goal of the analysis is to provide insights into the quantitative aspects of reporting, such as the scope and structure of published reports, the application of various reporting frameworks, the level of corporate compliance with the prescribed legal frameworks, and the inclusion of voluntary content in accordance with international standards. The theoretical part of the study aims to explain the concept of corporate social responsibility, aspects of sustainability reporting, highlight the characteristics and importance of non-financial information, and explain the legal frameworks essential for proper and standardized reporting.