Calling Prime Minister Narendra Modi as the "hope of the country", Parrikar asked the accountants to put in their strength behind his effort to clean up and energise the economy.
"I would advice you to tell your clients to come out clean," he said at a seminar organised by the Institute of Chartered Accountants of India.
The Income Declaration Scheme, 2016, which opened on June 1, allows domestic black money holders to declare ill-gotten wealth and come clean by paying a tax and penalty totalling 45 per cent.
"There can be serious worry in the minds of taxpayers who want to come out clean... The complication can also make a person dishonest," he said and asked the chartered accountants (CAs) to give a holistic viewpoint and not necessarily from their clients' perspective.
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Parrikar said they should give their feedback on the black money initiative, GST Bill and ways to reduce non-performing assets in the banking sector that are coming in the way of the country's progress.
He said Modi is guiding the country's agenda in right direction.
The Defence Minister said the only reason why he continues to stay in Delhi and work even though he does not like living in the national capital is because he is inspired by Modi.
Recalling the time when many skipped their meal once a week responding to a call by former Prime Minister Lal Bahadur Shastri to deal with food shortage, Parrikar said the only Prime Minister after him to have such an effect was Modi.
"It shows the country trusts the Prime Minister and he has touched their heart. He is the hope of the country. We should all combine, in the interest of the country, I am not a person worshipper," he said.