FDI's single window

It is well known that Mauritius accounts for about 40 per cent of India's foreign direct investment. But what tax authorities in India find more alarming is that a good part of this foreign investment from the tax haven originates from one building. "We hear that a few thousand crores of investment comes from one building only," said an official, implying that most investors have merely registered themselves in the island nation to take advantage of the Indo-Mauritius tax treaty, an old bone of contention between the two countries.