The department of Tamil is one of the founder departments of Nirmala College from 1962 to 1979. M.Phil & Ph.D Research Programmes are offered as Full time & Part time from 2016 onwards. Tamil SF department has been started as one of the major courses from 2018 onwards.
The department has been honored with the title of "Tamil Valar Tendral" by Thiruvalluvar Manava Sangam, Chennai.
Dr. Sinthanai kavinjar Kavidhasan and Vanoli Maamani J. Kamalanadhan have donated an amount of Rs.1,00,000/- for endowment and the interest is awarded as the cash prizes for Bharadhi Vizha every year from 2017 onwards.
The department is publishing the department magazine "Nirmala Nanthavanam". Other
department publications are Iyalpu, Urainadai Thokuppu, Olaikkili, Sowndharavalli, Ilakkiyam + Kalai = Valviyal, Mouna Eraichal.