"How do you say that there is corruption? The so-called Coalgate or the 2G spectrum cases are mere presumptive losses," Khan told reporters here on the sidelines of a student conference organised by the Institute of Chartered Accountants of India.
He termed corruption charges as wild allegations and the result of the propaganda by the opposition, which did not want the government to function.
Khan said the UPA government had taken initiatives to improve transparency in its functioning.
Asked about BJP's announcement of Narendra Modi as prime ministerial candidate of the party, he said, "It's their internal matter, their prerogative to choose whoever they want. Why should we be bothered by that.