- Kalyan Subramani Aiyar (born 6th June 1859) founded the firm bearing his name and started professional practice in Calicut in 1897. He and the firm shift-ed to Bombay in 1900, where it is head-quartered till this day.
- Brief details of the Founder’s illustrious professional career over half a century are as follows:
- K S. Aiyar a pioneer of Indian Accountancy and of the Accountancy profession, was first and last, a dedicated educationist. His professional practice kept growing first as sole proprietor and then with partners like Sorab S. Engineer & M.R. Tambe (also an Actuary) and thereafter his son Bharatha and Arjun Aiyar. Many of those associated with him went on to become outstanding in their own careers.
- The faith in him of Bombay’s Merchant Princes also grew. The high places of trust and confidence enjoyed over several decades by the firm and also those who worked in it, provide enough proof of the high standards of excellence attained by his firm and institution.