The reform of bank marketing and the development of the corporate bond market, in addition to improving the management system of listed companies in Japan, will streamline the financial activities of listed companies and increase the amount of credit. The value of a company and the brokerage costs of a financial contract are determined, in addition to the proportional distribution of debt financing, by the characteristics of the debt contract and are provided only by studies to strengthen the debt financing structure of a company. A general and systematic understanding of the relationship between corporate value and financing from external sources.