Like the credit cooperatives, credit unions form associations of a higher level, which are called corporate credit unions. The uniqueness of credit unions is that they put together the principles and benefits of financial cooperatives, consumer cooperatives and mutual aid funds, born once by trade unions. All the members of the credit union, regardless of gender, ethnicity, religious and political beliefs, as well as the size of the monetary share have equal rights. Credit unions of the open type are still controlled by their members, but at the same time provide services to people who are not its members (external customers). Shareholders in corporate organizations are basic credit unions, besides the same union can be a shareholder of several corporate organizations.