Specialization of credit unions to provide financial services to its shareholders requires a particularly strict regulation of membership and acceptable activities. First central bank of credit unions appeared in 1876. Credit unions began to appear rapidly in many European countries. Income derived from the provision of services to its members, does not become the profit of credit union and is distributed among its members in proportion to their savings. In some cases, the initiators of credit unions can be trade unions, associations such as social support centers and others.