The number of shareholders of a credit union is limited and formalized by a list. Limit of the number is defined by the assembly and such assembly establishes the charter. Credit unions perform the function of social protection in a vital for people sphere of financial services. They care about improving the financial literacy of the population, are working on the formation of their members and their employees. Membership in the credit union forms responsible citizens and conscientious attitude to their obligations as a norm of behavior, identify the value of a decent man's reputation in the business turnover. Credit unions appeared in England in the 19th century. In 1844 a group of workers from Rochdale established the first cooperative. In the case of default the shareholder - individual will respond with its property and, in addition, is jointly and severally liable with the credit union's commitments. In the UK, credit unions are a source of financing of people groups. This tool is not widely used. Credit Union - a non-profit financial institution specialized in mutual financial assistance by providing savings and credit services to their members. A credit union on its own initiative order is created by citizens (individuals) to solve their financial problems that they could not solve in other financial institutions. Corporate alliances are intermediaries between credit unions and financial markets.