Joint Stock Company belongs to a group of capital companies. The basis of linking is the capital exclusively, and not the people and their relations. The share capital is not to be confused with the asset of the company, which at the gain increases, but at the loss can be reduced. At the time of the foundation of company, as a rule there is no difference in the value of the share capital and assets of the company, but during the doing business the company's assets are changed while the share capital remains the same. It is important that share capital by the decision of shareholders or members may be changed. Reasons to change the share capital whether its reduction or increase are economic in nature. The aim of increasing share capital is to raise new capital to fund the development of the company, the reason for the increase may be the replacement of certain debt for shares in the company, internal reallocation of capital in order to achieve certain objectives with regard to the shareholder's dividend policy and defense company from hostile takeover. Reduction of share capital primarily relates to the rehabilitation of certain losses, while less frequent situations is where a company has excess capital, so by this operation is trying to return to its shareholders their portion. Changing the share capital of a joint stock company belongs to the group of strategic decisions of the company. When deciding on changing the share capital, decision making and the ability of the management are crucial.