The paper considers the problems of corporate governance in Ukraine during the process of transformation of the structure of corporate ownership. Capital structure, as an element of the system of corporate governance, is investigated. A tight connection between concentration of shareholders equity, equity cost and capital structure (financial leverage) has been found as a result of research. The higher the concentration of shareholders equity, the larger the share of debt in the capital structure and the higher the cost of equity. Thus, the capital structure of Ukrainian companies is an efficient indicator of corporate governance performance.
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