The issue to be raised in this paper is that there is no new approach to the debate about corporate governance that has been going on for more than 20 years. The idea that it may be possible to bring about improvements in corporate governance with the fiduciary obligation of financial company is not yet discussed in detail. It is a difficult question whether a governance structure is the right answer to meet the needs of all stakeholders involved with the company. Corporate governance in developed countries does not necessarily have positive effects on other countries. This is because each country has different perceptions about culture, history, social surrounding, etc. Because effective corporate governance can raise investors’ interests, accountability and rationality in the decision-making process of important corporate activities are very important. As a result, profitability can be improved, and illegal acts can be reduced to enable compliance management. If we look at corporate governance in the financial market area that performs corporate financing functions, the establishment of efficient governance is crucial in terms of improving the soundness of corporate finance. In particular, the governance structure of a financial investment company, which plays a role of financing in the capital market, is very important for the national economy. In general, corporate governance is the way in which the authority of the company is to be distributed, i.e., the management, directly or indirectly involved in the management of the company, as well as the interests of shareholders and creditors, as well as groups of stakeholders based on corporate social responsibility theory. It is true that the issue of power distribution is the matter of conflict of interests, and therefore it is difficult to produce satisfactory results for all. If so, then there is a need for a new perspective. From a viewpoint as a device to reduce corporate agency costs on corporate governance, it is important to provide a balanced structure between preventing the pursuit of personal interests by management and seeking co-operation among stakeholders, including shareholders and management. It is a similar idea to try to improve corporate governance by varying the degree of fiduciary obligation depending on the size of the company and the type of business treated by the financial institution. It is important for this approach to be fruitful that it involves empirical studies on the distribution of authority and the incidence of liability by the size and type of business of financial institutions.