BT BIG STORY: Why forex reserves fell $50 bn in a month despite record FCNR(B) inflows

India’s foreign exchange reserves have fallen by more than $50 billion in just about a month, highlighting the persistent pressure on the rupee despite a record mobilisation of foreign currency through FCNR(B) deposits.

In the week ended September 4, 2026, the country’s forex reserves touched a record $785.71 billion, making India the world’s fourth-largest holder of foreign exchange reserves. However, by October 2, reserves had declined to $734.6 billion, according to Reserve Bank of India data.

The sharp fall suggests continued intervention by the RBI in the foreign exchange market. The fall in reserves comes even after an unprecedented inflow through Foreign Currency Non-Resident (Bank), or FCNR(B), deposits, which was expected to provide additional dollar liquidity and support the domestic currency.

The rupee has remained under pressure against the US dollar this year, weighed down by geopolitical tensions and the war in West Asia. The resulting rise in crude oil prices has increased India’s import bill and, consequently, the demand for dollars. At the same time, sustained selling by foreign institutional investors in Indian equities has added to the pressure on the rupee.

The FCNR(B) plan

In a bid to counter dollar outflows and bolster foreign currency liquidity, the RBI announced a special concessional swap window in June, allowing banks to raise FCNR(B) deposits and swap the foreign currency with the central bank for rupees.

The response was far stronger than expected. Banks raised a record $132.98 billion through FCNR(B) deposits. The flow was so huge that RBI closed the window for FCNR (B) a month early, even as the special window for External Commercial

Borrowings (ECBs) and Overseas Foreign Currency Borrowings (OFCBs) remains open till December 31. As of September 30, $5.32 billion had been raised through OFCBs, while another $5.3 billion had been mobilised through ECBs.

The massive FCNR(B) mobilisation was expected to provide a significant boost to the rupee, which had hit a record low of 96.96 against the US dollar on May 20. But the impact on the currency has so far been limited.

The weakening rupee

The contrast is particularly striking when compared with the level of the rupee when the special swap window was announced in early June. The currency was trading at around 95.74 to the dollar at the time.

Since then, instead of appreciating, the rupee has weakened further. On Wednesday, October 7, the day, the Reserve Bank’s monetary policy committee announced a 25-basis-point hike in its benchmark repo rate, the rupee once again touched 96.84 against the greenback, before closing around 96.77. It recovered marginally on Thursday morning, trading at around 96.65.

The numbers suggest that the record foreign currency mobilisation through FCNR(B) deposits has not, by itself, been enough to reverse the broader forces weighing on the rupee. Strong dollar demand from importers, elevated crude prices, foreign portfolio outflows and geopolitical uncertainty continue to offset the additional foreign currency liquidity.

The RBI view

RBI Governor Sanjay Malhotra, however, sought to put the rupee’s recent weakness in perspective, saying that financial markets can behave irrationally over the short term and may take longer to reflect underlying fundamentals.

“By a number of estimates, including the REER (real effective exchange rate), the rupee is not overvalued. It may be undervalued,” Malhotra said on Wednesday.

His comments indicate that the RBI does not necessarily view the rupee’s current level as a reflection of its fundamental value. Instead, the central bank appears focused on ensuring that the currency’s adjustment remains orderly while using its reserves to manage excessive volatility.

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The more than $50-billion decline in forex reserves over the past month therefore reflects not just weaker external conditions, but also the RBI’s efforts to absorb some of the pressure on the rupee. The record FCNR(B) inflows have added to the country’s foreign currency resources, but persistent dollar demand has meant that the additional liquidity has yet to translate into a sustained recovery in the domestic currency.

Malhotra also said the central bank would continue to ensure that the rupee moves in an orderly manner. But there are limits to what the RBI can control. However, two key factors remain largely outside the central bank’s control: oil prices and foreign investor flows.

With a lasting peace in West Asia still elusive, crude oil prices have risen again in recent weeks, putting renewed pressure on India’s import bill and external finances. Higher oil prices typically translate into greater demand for dollars, making it harder for the rupee to recover. More importantly, the FIIs continue to sell. In September, foreign portfolio investors offloaded Rs 35,861 crore in India’s equity market and have sold another Rs 25,126 crore worth equity this month till October 7. In total, FPIs have sold a massive Rs 2.85 lakh crore in Indian equity so far in 2026.

As long as these outflows continue, the rupee is likely to remain under pressure, even as the RBI steps in periodically to smooth volatility and prevent disorderly movements in the currency.

Economists at HDFC Bank, Sakshi Gupta and Deepthi Mathew, said the recent weakness in the rupee was being driven by broader global and domestic factors, rather than simply the interest-rate differential.

“We continue to believe that interest rate hikes offer a weak defence in the short term for the currency and the currency weakness is being driven by broader factors, including oil prices, equity valuations and FII outflows, AI trade and US dollar strength,” they said.

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Compared to their expectation that the rupee would trade in the 95-96.50 range, they now expect the rupee to move in the 96-98 range against the dollar over the second half of the current financial year ending March 2027 and depreciate a further 2-3% in financial year 2028.

Professor Prasanna Tantri, associate-professor, finance, Indian School of Business (ISB), in a recent conversation with Business Today, questioned why the RBI had used the forex swap window, which is an emergency measure generally used during crisis times, this time around.

“There was no forex issue this time. Even if you were to take out the forward short positions of RBI, your forex reserves would still be around $500-600 billion (in June when the window was opened).

Other than the rupee probably touching 100 to the US dollar, I don’t see any calamity that could have happened. So, there was absolutely no reason for such an emergency measure this time around,” Tantri had stressed.

Globally, major central banks such as the Bank of Japan and the US Federal Reserve are now raising interest rates. Bond yields have surged. The US 30-year Treasury yields hit 5.70% on Wednesday. In such a high-yield scenario, foreign investors may not want to take too many risks, parking money abroad.

At the same time, higher global yields are keeping FII flows cautious, adding pressure on the currency, says Jateen Trivedi, VP research analyst - commodity and currency, LKP Securities.

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"With central banks now moving towards a tighter policy stance, the rupee could see a modest pullback if crude prices remain contained," according to Trivedi, who sees the rupee range between 96.45 and 97.00 against the US dollar in the near term.

The RBI is now expected to raise its repo rate by at least another 25 basis points in December, with some economists projecting an additional 50-75 bps increase in rates over the next few MPC meetings.

But unless geopolitical tensions ease, crude oil prices fall, and bond yields decline, the rupee may remain under pressure, FPI flows may not meaningfully reverse, say analysts, and that would keep the rupee under pressure.