The Sonowal kachari Autonomous Council was founded in 2005 following an agreement between the government of assam and representatives organizations of the sonowal kachari people
who wanted more autonomy for the area. The sonowal kachari autonomous council
was established under the sonowal kachari Autonomous council Act, 2005 passed by Assam Legislative Assembly with its headquarters at milannagar officers colony, Dibrugarh, Dist- Dibrugarh, Assam. An interim body of skac was constituted in the same year. The first election for council were held in 2013.The sonowal kachari Autonomous council Act, 2005 provides that the sonowal kachari Autonomous council shall be constituted “comprising of satellite areas for the Social, Economic, Educational, Ethnic and Cultural advancement of the sonowal kachari and other Scheduled Tribe communities residing therein.