Initially, Trivedi requested a written confirmation from Mamata Banerjee before resigning, as he had received conflicting reports on the same from the Leader of the Trinamool Congress parliamentary party - Sudeep Bandyopadhyay and the chief whip of Trinamool Congress in Lok Sabha - Kalyan Banerjee. Finally, on 18 March 2012, Trivedi resigned after making a direct phone call to Mamata Banerjee for confirmation of the party position. Later, Trivedi explicitly clarified that he had resigned because Trinamool Congress and Mamata Banerjee asked him to resign, but that he had received "communication" that neither PM nor Congress would request for his resignation, with the result that "..if I had not resigned on that particular evening (last Sunday), I could have brought uncertainty to government itself and that is not my job". On forwarding the resignation to the President with recommendation of acceptance, Prime Minister Manmohan Singh praised the budget presented by Trivedi and expressed "regret" on his "departure".