"Evidences do not point out that there was wholesale use of Jan Dhan accounts for money laundering purposes. Nearly 25 per cent of the JanDhan accounts were having zero balances and in the remaining, the average balance was Rs 27,000," he said at the Kolkata Literary Meet here.
Only a small number of such accounts could have been used for money laundering, he said.
"My real quarrel with demonetisation is that a decision of this magnitude, which has enormous consequences, cannot be taken by a single person.
The Congress leader alleged that even former RBI governor Raghuram Rajan had sent a five-page note to Prime Minister Narendra Modi opposing demonetisation, following which "he was shown the door unceremoniously."
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"It seemed that the PM was in a hurry to do demonetisation," he said.
Chidambaram said that as per his estimates, the country's GDP growth would take a hit of at least one per cent due to the policy.
The former Union minister also dispelled the notion that cash crunch was easing now.
"The cash crunch is not easing. It may ease in the metropolitan cities, but in distant areas, 40 per cent of the ATMs do not have cash," he alleged.