Most modern credit unions represent specialized consumer cooperatives of citizens associated by the principle of social community: place of work, place of residence, profession, or any other shared interest. Like the credit cooperatives, credit unions form associations of a higher level, which are called corporate credit unions. Principles of cooperative democracy and interaction were adequate to the purposes for which people joined credit unions. Among the U.S. credit unions, there are three groups that differ in terms of assets, shareholders, and business services. 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. Cooperation between credit unions, how they would not have been named, took place always, from the moment when the movement moved outside one credit union. The main advantage of credit unions consists in transparency, controllability, governance for shareholders. Consumer loan and reliable savings - these are the main goals, which mean "natural persons" having decided to unite in credit consumer cooperative. In the UK, credit unions are a source of financing of people groups. This tool is not widely used. Today, the World Council of Credit Unions is represented as members four regional confederations and twelve national associations.