Kakati's health broke after the demise of his beloved wife Kanaklata in 1952 and died in the same year, on 15 November, the date of his birth.
Soon after joining Cotton College as a lecturer in 1918, Banikanta Kakati took up the study of Srimanta Sankardeva and old Assamese literature.
His erudite exposition of scriptural lore in the various issues of the Banhi under the pseudonym of Babananda Pathak, in defence of the values represented by the teachings of Sankardeva still makes fruitful reading.
The publication of the thesis in 1941 was a god-send for the Assamese people who had been frantically struggling to establish the identity and provenance of their mother tongue.
Yet the work was acclaimed by no lesser an authority than Dr Emeneau who found it ‘ground-breaking in many ways.’ His interest in language proliferated over the years, but meanwhile, his mind started straying into other fields and pastures new.
Finally he turned his attention to Indian mythology and his Vaishnavite Myths and Legends has been acclaimed as 'one of the very few studies of the religious scene in India, produced by our scholars, that deserve reading and pondering over.'
As a critic of old and new literature in Assamese and as a writer on sociology and religious trends in medieval India-particularly Assam, he set new standards.