"If the current pace of FCNR(B) inflows, as reflected in the central bank data, continues, we may well see three-digit US dollar billion mobilisation, significantly exceeding the initial estimates of $50-60 billion," said VRC Reddy, head of treasury, Karur Vysya Bank. "The momentum so far has been a pleasant surprise."

The Reserve Bank of India (RBI) Saturday said the special programmes between them had mobilised $40.81 billion in foreign exchange inflows up to July 31. Of this, FCNR(B) deposits accounted for $36.72 billion, despite the current programme having been operational only since June 8. The strong response has prompted economists to raise their estimates of the eventual mobilisation under the scheme.

"The cumulative inflows across FCNR(B), ECB and OFCB could reach $90 billion or even higher. Collections so far have been much stronger than expected," said Gaura Sengupta, chief economist, IDFC First Bank.

She has consequently revised FY27 balance of payments surplus forecasts to $40 billion from $25 billion earlier.

Robust Flows

"We continue to see up to $75 billion being raised under these concessional schemes, helping fund the current account gap, with a possible balance of payments surplus of nearly $35 billion in FY27," said Madhavi Arora, chief economist at Emkay Global Financial Services.

Madan Sabnavis, chief economist, Bank of Baroda, estimates the overall mobilisation around $70 billion. "We believe around $70 billion can come through the total window, with $50-60 billion from FCNR(B) alone and another $10 billion from ECB and OFCB, though those flows are likely to pick up only after September," he said.