Though the Mission started functioning in the island in 1924 by way of managing a few schools, the centre in Colombo was formally established in 1930. Swami Sarvarupananda is the swami-in-charge of the centre.
- A free library and a reading room (with 8000 books and 23 newspapers and periodicals) and a bookshop.
- A Sunday school for children (669 on roll).
- An International Cultural Centre with guest rooms, library, etc.
- Relief and welfare work such as providing food and educational, medical and pecuniary help to the needy and victims of war (61,51,040 Sri Lankan Rupees spent).
- Monthly medical camps treated 1016 patients and weekly ayurvedic camps treated 2712 patients.
- Lectures and cultural programmes in the ashrama’s Swami Vivekananda Centenary Memorial Hall (one of the biggest auditoriums in Colombo) as well as in other parts of the island.
- Personality development camps for children from schools all over Colombo, and free distribution of Ramakrishna-Vivekananda literature to schools and libraries.
- Daily worship, weekly classes, fortnightly retreats, occasional festivals, and celebration of the birthdays of Sri Ramakrishna, Holy Mother Sri Sarada Devi, Swami Vivekananda and other prophets.
- A sub-centre at Batticaloa with the following activities:
- Three orphanages with 106 children.
- Two nursery schools with 169 children.
- Three Sunday schools with 361 children.
- A computer training centre with 75 students.
- Two free coaching centres with 271 students.
- A healthcare centre, which treated 18,571 patients.
- Daily worship and weekly congregational prayers.
- Occasional classes at Manthivu Lepers’ Asylum and Thalankundah, where the centre maintains temples with regular puja and bhajans.
- Welfare work by providing educational aids and pecuniary help to poor students (Sri Lankan Rupees 49,49,600 spent this year).