Fund of Mutual Financial Aid of the credit union can be extended by sponsorship contributions from businesses, organizations, including on a returnable basis. Corporate credit unions are united on a cooperative basis in the Central Credit Union (US Central Credit Union). Credit unions encourage savings of citizens, setting compensation payments (interest) on savings and provide from these savings loans to their members. First Credit Union was savings unprofitable institution, or rather credit cooperative, providing services to its members. In the U.S. credit unions timely and full repayment of loans is a common phenomenon. Unpaid and delinquent loans are not more than 3% of their amount. First central bank of credit unions appeared in 1876. Credit unions began to appear rapidly in many European countries. In the credit union compensation for use of the loan (interest) is a source of compensation for savings. The relationship between credit unions and shareholders arise from the membership and are not customer relationship. Unlike banks credit unions limit their activities to a closed circle of people.