During the period of demonetisation from November 9 last year to January 10 this year, "The total undisclosed income admitted was more than Rs 5,400 crore" and the total quantity of gold seized stood at 303.367 kgs, the Finance Ministry has said in an affidavit to the apex court.
It gave the details of the unaccounted income for three years from April 1, 2014 to February 28 this year, including the demonetisation period.
"This is in addition to the seizure of undisclosed assets worth Rs 2,890 crore," it said.
Similarly between April 1, 2014 to February 28 this year, the IT department conducted more than 15,000 surveys which led to "the detection of undisclosed income of more than Rs 33,000 crore".
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Highlighting the achievements of the demonetisation period, the affidavit said in about two months from November 9 last year, "significantly large number of enforcement actions were undertaken by the IT Department".
The Finance Ministry, which recently refused the demand to give more grace period for depositing the scrapped Rs 500 and Rs 1,000 notes, said the Ministry of Home Affairs in its July 11 communication has reported that as per intelligence agencies, there were reports of largescale misuse of the window for exchange of the demonetised currency notes.
It said that over 400 cases were referred to the CBI and the Enforcement Directorate (ED) after several instances of manipulation for conversion of unaccounted cash held in specified bank notes into legal tender by various entities was detected during the investigation.