The Attorney General of India is the country's chief legal advisor, appointed by the President of India under Article 76. The AGI represents the Government of India in legal matters before the Supreme Court and High Courts, and advises the government on all legal questions referred to them.

The AGI handles presidential references under Article 143 (Advisory jurisdiction of the Supreme Court). Private practice is permitted, but the AGI cannot act against the Government of India's interests.

The CAG is India's supreme audit institution — described by Dr. B.R. Ambedkar as "the most important officer under the Constitution." Established under Article 148, the CAG audits all government accounts — Union, state, and Union Territory — to ensure financial accountability and transparency in public expenditure.

The CAG conducts compliance audits (whether rules were followed), performance audits (whether money achieved intended outcomes), and financial audits (accuracy of accounts). Its reports are examined by the Public Accounts Committee (PAC) of Parliament.

The Advocate General of the State is the state-level equivalent of the Attorney General of India — the chief law officer of a state government, appointed by the Governor. The AGS advises the state on legal matters and represents it in all courts within the state.

The GST Council is a unique federal constitutional body created by the 101st Constitutional Amendment Act, 2016 to implement and regulate the Goods and Services Tax across India. It is chaired by the Union Finance Minister and includes state finance ministers, balancing Centre-state tax policy interests.

The Finance Commission is a quasi-judicial body constituted by the President every five years (or earlier if necessary) to determine the principles governing the distribution of tax revenues between the Centre and states, and among states themselves.

The UPSC is India's central recruitment body, established on October 1, 1926 and given constitutional status on January 26, 1950. Article 315 designates it as the recruitment agency for Union and joint services, with Articles 316–323 defining its detailed structure, powers, and functions.

The State Public Service Commission functions at the state level, overseeing recruitment and personnel management for state civil services. Its independence is constitutionally protected — members have secure tenure and their salaries are charged to the state's Consolidated Fund.

The Election Commission of India is the constitutional authority responsible for superintendence, direction, and control of the preparation of electoral rolls and the conduct of elections to Parliament, state legislatures, and offices of the President and Vice President.

Initially established as a Special Officer for SCs, the NCSC became a multi-member commission after the 89th Constitutional Amendment Act, 2003 — which also separated it from the commission covering Scheduled Tribes, creating distinct bodies for each.

Key functions include investigating SC grievances, monitoring the implementation of constitutional safeguards, advising the Union and state governments on socio-economic development programmes for SCs, and evaluating the effectiveness of welfare measures.

The NCST was established by the 89th Constitutional Amendment Act, 2003 as a separate body from the NCSC, and became fully operational in 2004. It addresses the specific needs and rights of Scheduled Tribes — particularly around forest rights, land issues, and resource protection.

The NCBC was established in 1993 following the Supreme Court's landmark Indra Sawhney (Mandal Commission) judgment. It remained a statutory body until 2018, when the 102nd Constitutional Amendment Act elevated it to constitutional status under Article 338B — a high-priority UPSC fact.

Article 350B was introduced by the Seventh Constitutional Amendment Act, 1956 following the States Reorganisation Act. The Commissioner for Linguistic Minorities, established in 1957, works under the Ministry of Minority Affairs to protect the rights of linguistic minority communities.