Responding to a query from BJP member Anurag Thakur during a discussion on the union budget, Jaitley said: "Tax proceedings have begun...".
He said that "SIT (Special Investigating Team) is going into it" and details are being given to it.
Jaitley said there was a media report of a separate list, but when we wrote to the Swiss authorities, they said there was "no separate list".
He said the "present government has nothing to hide" and the issue of black money has been taken up "with some element of intensity".
The minister added that the government is "in process of communicating with the Swiss authorities".