This study does a thorough bibliometric analysis of worldwide research on capital structure and capital costs to delineate publication trends, intellectual frameworks, and topic development within the discipline. The study analyzes co-authorship networks, keyword co-occurrence patterns, institutional collaborations, and country-level links using data taken from Scopus and processed with VOSviewer and Bibliometrix. The findings indicate that conventional finance subjects—namely leverage, cost of capital, profitability, and corporate governance—persist as predominant, constituting the essential clusters of the discipline. Recent research indicates an increasing multidisciplinary focus on subjects like as sustainability, energy efficiency, cost optimization, human capital, and social capital. The worldwide collaboration map underscores the pivotal roles of the United States, China, India, and various European nations in influencing global research trends. This study provides a systematic and empirical assessment of the field's evolution, delivering significant theoretical insights and practical recommendations for scholars, practitioners, and policymakers.
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