TRI is presently governed by the Tea Research Board of Sri Lanka which is under the purview of the Ministry of Plantations Industries. Tea Research Board consists of scholars of the field of research, management and economics.
The Tea Research Institute, Low country station, Ratnapura was established in 1963 at St.Joachim estate, Ratnapura to cater the technological and extension needs of tea growers in the low country tea planting districts representing about 50% of the total extent of tea lands in the island. Its advisory and extension services cover three major tea growing districts viz. Ratnapura, Kalutara and Kegalle with over 150,000 smallholdings. Presently, the TRI Low country station has 4 arms of research divisions namely, Agronomy, Plant Breeding, Entomology and Technology and an Advisory and Extension section with 23 staff members in 2010.