Under the Article 148 of Indian Constitution, The President of India appoints the Comptroller and Auditor General of India (CAG) to perform all duties and executive power in connection with the accounts of the Union and States. His main duty is to keep a vigilant watch on the finances of the Union and the States, to submit reports to the President and the Governor of the States, and to ensure that the money voted by the legislature is spent under the appropriate heads and non exceeded or varied.
He holds office for a term of 5 years or till he becomes 65 years old years, whichever is earlier. The President of India can remove the Comptroller and Auditor General of India (CAG) from the office before the expiry of his term on grounds of proved misbehaviour or incapacity. In short, CAF acts a custodian and trustee of public money. He ensures regularity of expenditure and looks into the wisdom of expenditure.