He was elected Secretary of the Vakil's Association and in 1891, founded the Madras Law Journal with another lawyer, P. R. Sundaram Aiyar.
Krishnaswami founded Venkataramana Dispensary and Ayurvedic College on Kutchery Road in 1905 to promote indigenous forms of medicinal treatment.
He was instrumental in bringing together the moderate and extremist factions of the Congress Party at the 1908 session in Madras.
Krishnaswami became a judge of the Madras High Court in 1909 at a time when he was admired in political circles.
He was judge for a mere 15 months and then became a member of the Executive Council of the Governor of Madras, a top-ranking post, offered to him by the British.
During the minority of the Shankaracharya of Kanchi, he intervened personally to see to it that control of the Math did not fall into wrong hands.
He and Chandrasekhar Iyer were both successively secretaries of the Madras Sanskrit College and made it grow into a great organization.
Balasubramania iyer was an MLC in Tamil Nadu and was also a member of the syndicate of Madras University.