The government said it was not legally bound to come out with a fresh notification to grant grace period or window for depositing scrapped currency notes.
It also gave details about the raids and recoveries made by law-enforcing agencies during and after the demonetisation period claiming that undisclosed income of over Rs 5,400 crore was detected.
The affidavit was filed in response to petitions by private individuals and a firm seeking a window like those given to NRIs and people who were abroad during the period of demonetisation to deposit the scrapped currency notes with the Reserve Bank of India.
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"There is no legal duty cast upon the government to issue any notification extending the grace period. Equally, the petitioner has no legal right to claim grace period," it said.
The Centre made it clear that as per last year's November 8 notification, the demonetisation period was between November 9 to December 30 last year within which primarily, the exchange and deposit of specified bank notes was permitted to every person subject to meeting the laid down norms.
"Therefore, the use of word 'shall' necessarily read as 'may' and it did not impose any legal obligation on the Central Government," the affidavit said.
"Between November 9, 2016 and January 10, 2017 alone, there were more than 1100 raids/surveys conducted by Income Tax Department on various persons. During the same period, i.E., between November 9, 2016 and January 10, 2017, more than 5,100 notices were issued for verification of high value suspicious cash deposits made in bank accounts," it said.
"As a result of the raids and other strict measures enforced, more than Rs 610 crore in cash (including cash of Rs 513 crore out of which Rs 110 crore was in new currency) and valuables were seized by the IT Department and other government agencies. The undisclosed income detected in the above actions was more than Rs 5,400 crore," the affidavit said.
"Accordingly, it was decided as a matter of conscious decision and as a major economic step to bring in an Ordinance known as 'The Specified Bank Notes (Cessation of Liabilities) Ordinance, 2016 since the Parliament was not in session on December 30, 2016," it said.
The government also submitted that after demonetisation period was over, the IT department initiated "operation clean money" on January 31 to leverage technology and data analysis for e-verification of cash deposits made during that period.
"It is submitted that in case there has been due explanation the verifications are being closed after proper analysis and examination. Similarly, where there has been deposits made in Pradhan Mantri Garib Kalyan Yojna (PMGKY) then also the verifications are being closed.
"It is further submitted more than 3.78 lakh out of approximately 18 lakhs, high risk cases have been detected and have been taken up for assessment and investigation," it said.