In the complex world of finance, understanding the relationship between a company's capital structure and its overall performance is crucial. This book offers a comprehensive exploration of the interdependence between capital structure decisions and business performance, with a specific focus on German-listed companies. It provides valuable insights into the intricate dynamics of corporate finance. Through a blend of theoretical frameworks, empirical research, and practical applications, the book presents readers with a thorough understanding of how capital structure decisions impact a company's profitability, risk profile, and long-term sustainability. From traditional theories of capital structure to cutting-edge empirical methodologies, the book outlines the latest developments in the field, offering practical tools and strategies for optimising financial decision-making. Moreover, the book explores how different regions and global trends influence capital structure decisions, providing a comprehensive examination of varying practices and the factors that shape them. It delves into specific aspects influencing global capital structures, including an analytical comparison of capital structures across key global markets such as the United States, the European Union, and China. This comparison highlights how economic, cultural, and market dynamics influence corporate leverage decisions. The impact of technological innovations and their role in reshaping financial strategies are also discussed. Designed for scholars, researchers, and advanced students in finance and economics, this book serves as a definitive reference for understanding the complex dynamics of corporate finance. With its rigorous analysis and practical insights, it equips readers with the knowledge and analytical tools needed to navigate the challenges of capital structure decision-making in today's dynamic business environment.