Corporate credit unions are united on a cooperative basis in the Central Credit Union (US Central Credit Union). The economic basis of credit unions - finances of a household. The main objective of the credit union - to ensure financial stability of a household, to ensure the priority of their shareholders' financial interests. National Credit Union Insurance Fund was created by Congress in 1970 to insure deposits of credit union members in the amount of 100 thousand dollars. Credit unions appeared in England in the 19th century. In 1844 a group of workers from Rochdale established the first cooperative. Credit unions encourage the proper use of shareholders savings, developing social programs (education, health, recreation, housing, etc.).