New Delhi, Jan. 31 -- The Economic Survey raised concerns about the sustainable level of current account deficit (CAD) for India.

"India runs a CAD, and its investment needs are much larger considering the size of its economy. Supplementing domestic savings with reasonably large foreign savings expands the scope for capital formation," said the survey tabled by finance minister Nirmala Sitharaman in parliament on Friday.

"If, for various reasons, capital flows are going to be problematic, it raises questions as to the level of sustainable CAD for India," the survey said. "It may not be 2.5 per cent to 3 per cent as before, but it is much lower."

India's CAD stood at $11.2 billion or 1.2% of the GDP in the third quarter ended December c...