Apart from trying to shed sufficient light on the dominant capital structure in South Africa, this study attempts to answer the question of: what is the role of capital structure in firm valuation? In addition, the role of other market and economic variables like taxation will be assessed using a regression model and data drawn from financial markets. To consult more MBA essays, please see at: Bộ Luận Văn Thạc Sĩ Quản Trị Kinh Doanh MBA | Master of Business Administration: The Capital Structure and its impact on firm value of JSE Securities Exchange Listed Companies