To become a Certified Internal Auditor, a candidate must pass an examination and satisfy educational and professional requirements, according to The Institute of Internal Auditors. A candidate must hold a college degree, have four years experience as an internal auditor and receive a favorable character reference from a qualified individual.
The Certified Internal Auditor exam tests a candidate's knowledge of auditing basics, practice and knowledge, states The Institute of Internal Auditors. The exam has three sections, each lasting between two and two-and-a-half hours. To help candidates prepare, the Institute provides sample questions, practice exams and reference materials on its website. The Institute conducts the exam electronically in several languages at more than 500 locations around the world.