This book explores the application of ESG (Environmental, Social, Governance) factors in banking credit. What makes this research particularly unique is its empirical analysis of how ESG factors impact the cost of debt for companies, which addresses a significant gap in the current literature on sustainable finance. Specifically, the book provides practical, data-driven insights into the financial benefits of sustainability. It not only examines corporate ESG performance but also how banks incorporate ESG factors into their credit evaluation processes, providing a comprehensive view of the interaction between sustainable finance and traditional banking practices. It also offers a detailed examination of the EU’s evolving regulatory framework regarding ESG and banking alongside practical implications of ESG factors, both for companies and banks, and demonstrates how sustainability can lead to tangible financial advantages, such as more favourable loan conditions. By addressing the financial and strategic needs of companies seeking to lower their borrowing costs through sustainability efforts, this book satisfies the growing demand for research at the intersection of finance, sustainability, and regulation.