Rajan & Co., is a firm of Chartered Accountants existing in Hyderabad since 1956. It was founded by Sri.T.K. Natrajan in October 1956 and has been its proprietor for long.

 
Sri. T.K. Natrajan became a Chartered Accountant in 1956 after having been trained in the field of Audit and Taxation of both Corporate and non- Corporate clients by V. Sankar Aiyar & Co., who have offices in New Delhi, Mumbai and Kolkata. 
 
Sri. T.K. Natrajan grew from strength to strength and has trained more than 50 students under him, out of which more than 25 are qualified chartered accountants and are highly placed in industries and have become noted chartered accountants in practice. One of his students is Mr. S. Ravi Swaminathan, who after his training with Rajan & Co., qualified and obtained the Certificate of Practice in 1977. He has been associated with the firm Rajan & Co., as its partner and has been attending to the Audit and Taxation matters of both Corporate and non- Corporate clients.
 

The firm has gained significant recognition in the field of Taxation and they are a force to reckon within Income Tax circles.