In the U.S., credit unions have a clear organizational structure. All credit unions belong to one or the other parent credit union (there are 35 of them in the U.S.). Corporate credit unions are united on a cooperative basis in the Central Credit Union (US Central Credit Union). Principles of cooperative democracy and interaction were adequate to the purposes for which people joined credit unions. Typically new members of the credit union become citizens having suretyship or recommendations from their friends - members of the credit union. First central bank of credit unions appeared in 1876. Credit unions began to appear rapidly in many European countries. In the UK, credit unions are a source of financing of people groups. This tool is not widely used. The specifics of credit unions and, in some sense, their uniqueness lies in the fact that they work not for profit and do not appropriate profit. Credit Union - one of the most attractive financial institutions for the public being a non-profit alternative to banks.