"Was there a need for demonetisation just to achieve cashless transactions? Did the black money come out," Chavan said.
"Do not be under the misconception that corruption reduces after ushering in cashless transactions," he said in an interview to a Marathi channel.
"In India, almost 98 per cent transactions take place using cash," he said.
There were no preparations before taking such an important decision, he claimed. The objective with which this decision was taken has not succeeded, Chavan said, commenting on 50-day since Modi announced the decision on November 8.