Since 1919 the IMA has grown to approximately 90,000 members. Membership is open to management accountants, public accountants, educators, students, and individuals involved with local, state, and federal government. The Institute of Internal Auditors was founded in 1941 and began with 24 members. It was organized to develop the professional status of internal auditing, and to establish high standards of integrity, honor and character among internal auditors. Since its founding the IIA has grown to over 50,000 members, and its CIA designation has become an integral part of the IIA's professional development program.
Membership is open individuals involved in internal audit activities.
This includes EDP auditing, internal review, program management, evaluation, and contract audit inspection services. College educators, and full-time accounting students are also eligible for membership.