The Comptroller and Auditor General of India is the supreme audit institution of India, established under Article 148 of the Constitution of India. They are empowered to audit all receipts and expenditure of the Government of India and the State Governments, including those of autonomous bodies and corporations substantially financed by the government. The CAG is also the statutory auditor of Government-owned corporations and conducts supplementary audit of government companies in which the government has an equity share of at least 51 percent or subsidiary companies of existing government companies. The CAG is also the statutory auditor of the Lokpal.

The Government of India (GoI), constitutionally known as the Union Government and also called the Central Government, is the national authority of the Republic of India, a federal republic located in South Asia, consisting of 28 states and eight union territories.