The present study was conducted in Kakopather and Marghertia blocks of Tinsukia district of Assam. With the interventions of the Tribal Sub Plan (TSP) project during the past 3 years . 2015-16, 2016-17 and 2017-18, a perceptible improvement in the crop productivity has been observed. With the focussed programmes and introduction of new technologies, the way of farming is transforming from subsistence low-input low-output production system to commercialization. Significant difference was found in food security, habitat security, occupational security, educational security and social security in before and after implementation of TSP. | Impact assessment of tribal sub plan (TSP) project on socio-economic status of Tribal of Tinsukia district, Assam, India