An estimated 69 orders passed by as many as 23 members of various benches of the Income Tax Appellate Tribunal (ITAT) are now the subject matter of an unprecedented nationwide inquiry for alleged corruption by the Central Bureau of Investigation (CBI). The ITAT, a quasi-judicial body, is the highest income tax appellate authority. Its bench usually has two members — a judicial and an accountant member — who are selected by a board chaired by a sitting judge of the Supreme Court.