Pundit Tara Singh conforms to the Nirmala school of thought. He presents Sikhism from a Vedantic orientation, and it being a blend of Sankara and Ramanuja. He believed that Guru Nanak Dev was an incarnation of Vishnu and that Waheguru was another name of Vishnu and could not refer to the nirguna concept of God. He wrote extensively about the meaning of Waheguru in his book Waheguru Shabad-Arth Tika. In the Mahan Kosh it is written that Pandit Tara Singh believes that the Sarbloh Granth was produced by Bhai Sukha Singh the head Granthi of Patna Sahib from a manuscript given by an Udasi from Shri Jagannathpuri (Odisha) who said it was Guru Gobind Singh's writing. Pandit Tara Singh also believes that the entire Dasam Granth was written by Guru Gobind Singh.