RBI’s special FCNR(B) swap window drew $72.85 billion in inflows by August 21, prompting the central bank to close the window early.
MUMBAI: The Reserve Bank of India’s net foreign exchange forward book surged to an all-time high of $136.7 billion in July 2026, expanding by $33.4 billion in a single month from June’s $103.3 billion, according to official data released on August 31. The jump shattered the previous record of $106.6 billion set in May and reveals a story more complex than India’s headline reserves alone suggest.
While gross foreign exchange reserves also hit a historic peak of $716.9 billion for the week ended August 14, the forward book expansion means a meaningful chunk of that headline figure comes with strings attached.
The Swap Window Behind the Surge
The driver is a special concessional Foreign Exchange Swap Facility the RBI launched on June 5 and operationalised on June 8, designed to let Authorised Dealer banks mobilise foreign currency through FCNR(B) deposits, External Commercial Borrowings and Overseas Foreign Currency Borrowings. Banks sold incoming dollars to the RBI in the spot market for rupee liquidity, while the RBI committed to forward contracts returning those dollars when the underlying 3-to-5-year deposits matured. Crucially, the RBI absorbed hedging costs by offering swap rates below the roughly 3.5% market forward premium, creating an attractive arbitrage for banks.
The response outpaced expectations. Cumulative inflows reached $40.8 billion by July 31 and $72.85 billion by August 21, prompting the RBI to close the FCNR(B) window early, on August 31 instead of the originally planned September 30. The companion ECB and OFCB window remains open through December 2026.
Why Reserves and Forwards Both Matter
The analytical distinction here is between gross and net reserves. The $716.9 billion headline figure includes dollars acquired through the swap facility that carry a contractual obligation to be returned. Subtracting the $136.7 billion in forward commitments leaves an estimated $580.2 billion in net unencumbered reserves, the actual buffer available for unconstrained market intervention. Headline reserves look imposing, but the RBI’s real firepower is smaller than the top-line number implies.
A Rupee That Didn’t Move
Despite this substantial capital inflow, the rupee stayed range-bound between 94.00 and 95.00 against the dollar. The explanation lies in how the RBI structured the intervention: spot dollars sold by banks were absorbed directly into reserves rather than allowed to clear in the open market, neutralising their appreciating effect. At the same time, corporate and bank forward hedging, estimated around $12 billion, created offsetting demand on the forward curve, while elevated crude oil import bills tied to West Asia tensions added further downward pressure. The net effect was a currency that barely moved despite tens of billions in fresh capital.
Managing the Liquidity Wave
The rupee liquidity generated by these dollar purchases required active management. The RBI conducted Open Market Operations worth Rs 8.28 lakh crore through FY26 and relied heavily on Variable Rate Reverse Repo auctions across multiple tenors to absorb surplus banking liquidity, all while holding the policy repo rate steady at 5.25% with a neutral stance at its August Monetary Policy Committee meeting.
Echoes of 2013, With a Different Motive
The facility invites comparison with the FCNR(B) swap window Raghuram Rajan deployed in 2013, which mobilised roughly $34 billion amid a currency crisis and “Fragile Five” panic. The 2026 version, by contrast, mobilised more than double that amount from a position of relative strength, high reserves and stable growth, functioning as proactive buffer-building rather than crisis response. The maturity profile also differs: 2013’s inflows created a concentrated repayment wall in 2016, while 2026’s deposits are termed out toward a 2029-2031 window, spreading the eventual unwind across multiple years.
What Happens at Maturity
When these forward contracts come due, the RBI faces three choices: deliver spot dollars and draw down reserves while extinguishing the liability, roll over the contracts if banks retain the underlying deposits, or step into the open market to source dollars if depositors exit. Which path dominates will shape reserve dynamics well into the next decade.
What Remains Unclear
Several questions stay open. The RBI has not published granular maturity or buy/sell breakdowns for the record $136.7 billion figure, leaving analysts to infer structure from underlying deposit terms. The precise carrying cost of absorbing hedge costs on FCNR(B) deposits, and its impact on RBI’s surplus transfers to the government, remains unquantified in public disclosures. And whether the forward book now gradually contracts following the window’s early closure, or climbs further on continued ECB hedging, is not yet clear.
What to Watch
Analysts tracking this space should watch the RBI’s monthly bulletin for forward book trajectory and maturity bucket shifts, weekly reserve data for signs of drawdown, ECB and OFCB mobilisation figures through the December deadline, and VRRR auction sizes as a gauge of ongoing liquidity sterilisation. Together these will indicate whether India’s record reserves translate into durable strength, or whether the forward commitments behind them become a slow-burning constraint through the turn of the decade.
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