Borrowing rate for the credit union is a source of income to cover the administrative costs. All excess funds are returned to members in the form of dividends on savings. First central bank of credit unions appeared in 1876. Credit unions began to appear rapidly in many European countries. Members of credit unions place in credit unions usually free fund balances, ie those that remain after expenses devoted to education of children, the acquisition of new properties, additional pension benefits, etc. To reduce the risk of default on loans members of the credit union shall the joint guarantee. The main advantage of credit unions consists in transparency, controllability, governance for shareholders. Since the early 80's started the process of consolidation of credit unions, leading to a decrease in their number with a simultaneous increase in the total number of members. The relationship of shareholders with credit union are not client-based, they are co-operative, based on different principles and standards, in particular, on the principles of the law of obligations. In the credit union compensation for use of the loan (interest) is a source of compensation for savings. In the UK, credit unions are a source of financing of people groups. This tool is not widely used. To increase the number of credit unions in 1979 was adopted the corresponding law that serves as the legal basis of their activity.