The firm K.K. Thampan & Co was constituted in its present form in 1952 by a merger of two proprietary concerns and is continuing in its present form since then.

The founder of the firm was the Late Sri T.R. Subbarama Aiyar, GDA (FCA) and the firm has since evolved into multi-disciplinary areas of work including assurance audits, compliance audits, feasibility studies, corporate financial planning, Direct Tax, Indirect Tax consultation and associated work. The firm also caters to the individual and SME segments with regard to Income tax return filing, GST returns filing, representation before statutory authorities, etc.