The Tripura Tribal Areas Autonomous District Council Act 1979 was passed by the parliament after certain movements launched by the indigenous people of Tripura.

• The act was passed under the provision of the Sixth Schedule of the Constitution.
• Later, the council was formed on 15 January 1982 under the Fifth Schedule of the Constitution.

Tripura Tribal Areas Autonomous District Council (TTAADC) is an autonomous district council that covers two-third of Tripura's territory.​

• Autonomous Councils are constituted for Social, Economic, Educational, Ethnic and Cultural advancement of the ST communities living in Core Areas as well as in Satellite Areas covering many districts of Assam.
• The objective of the council is to empower the indigenous people of Tripura and to protect their customs, traditions and culture.
• Its other motive is to bring all-around development of the tribal people in Tripura.
• 87.55% of Scheduled Tribes living in the TTAADC area.
• It is governed by a council of 30 members.

• As per the Sixth Schedule, the four states viz. Assam, Meghalaya, Tripura and Mizoram contain the Tribal Areas which are technically different from the Scheduled Areas.
• Though these areas fall within the executive authority of the state, provision has been made for the creation of the District Councils and regional councils for the exercise of certain legislative and judicial powers.
• Each district is an autonomous district and Governor can modify/divide the boundaries of the said Tribal areas by notification.