Economy

India's $729 Billion Forex Record Has a Catch Most Investors Missed

India's foreign exchange reserves hit a record $729.3 billion, but most of the eight-week surge was borrowed through the RBI's concessional swap window, which shuts on 31 August. Here is what that means for the rupee, bank margins and 2029.

By The Indian Markets Desk 14 min read

On Friday evening the Reserve Bank of India published a number that looked like an unambiguous win. Foreign exchange reserves had risen $12.4 billion in a single week to $729.3 billion, an all-time high, according to the central bank's weekly statistical supplement for the week ended 21 August 2026.

That is a remarkable recovery. Two months earlier reserves had fallen to $666.9 billion as the RBI sold dollars to defend a rupee battered by the West Asia energy shock. The stock has since climbed $62.4 billion in eight weeks, Business Standard reported.

The catch is where the money came from. Most of it was borrowed on subsidised terms through a facility that stops accepting new deposits on 31 August, and it has to go back.

What happened#

On 8 June 2026, the RBI opened a special US dollar-rupee swap facility for fresh Foreign Currency Non-Resident (Bank), or FCNR(B), deposits of three to five years' tenor, through circular FMOD.MAOG.No.S-56/01.06.016/2026-27. Parallel windows were opened for external commercial borrowings and overseas foreign currency borrowings.

The response came faster than anyone at Mint Street appears to have expected. FCNR(B) inflows stood at $36.7 billion by 31 July and $52.3 billion by 13 August. On 5 August, Governor Sanjay Malhotra told reporters there was "no proposal under consideration to close the scheme prematurely." Nine days later the RBI brought the deadline forward by a month, citing the "encouraging response" to the facility.

As of 21 August, inflows under the three windows totalled $72.85 billion: FCNR(B) deposits $65.4 billion, external commercial borrowings $2.59 billion and overseas foreign currency borrowings $4.86 billion, the RBI disclosed. Bankers expect the final tally to reach $90 billion to $100 billion by the time the window shuts. Swaps against qualifying deposits can still be executed with the RBI until 11 September.

Not all of last week's $12.4 billion was fresh money. Foreign currency assets rose $9.48 billion to $591.33 billion, of which roughly $6.1 billion came from actual dollar purchases by the RBI, according to Gaura Sen Gupta, chief economist at IDFC First Bank. The rest was revaluation. Gold holdings added $2.8 billion to $114.22 billion as bullion rose 5.18 per cent to $4,603 an ounce.

What a swap window actually does#

An FCNR(B) deposit lets a non-resident Indian park money with an Indian bank in dollars, pounds or euros without converting it into rupees. The product has existed for decades. What was new in June was the swap attached to it.

Say a bank takes in $50,000 from an NRI. It now owes that depositor dollars in three years' time. Under the facility, the bank sells those dollars to the RBI today and receives rupees, which it can lend. At maturity the trade reverses: the bank returns the rupees, takes back the dollars and repays the depositor. Both legs are struck at the same exchange rate, which is what removes the hedging cost. The RBI's own FAQ confirms the swap covers only the principal, not the interest.

Three sweeteners made the scheme irresistible. Banks got the hedge for free. The deposits were exempted from cash reserve ratio and statutory liquidity ratio requirements, so no capital had to sit idle against them. And banks were given latitude on pricing, which pushed FCNR(B) rates from roughly 3.5-4 per cent to 6-7 per cent.

When the RBI takes in those dollars, its gross foreign currency assets go up. But it has simultaneously written itself an obligation to hand the same dollars back. As Business Standard put it in its explainer, the swap "should not be viewed as an unconditional, permanent addition to the RBI's reserves."

Gross reserves, net reserves and the forward book#

For an institutional investor, the number that matters is not gross reserves but reserves adjusted for the central bank's forward commitments.

The RBI's net short dollar position in the forward market had reached roughly $106.6 billion by the end of May 2026, built up during the currency defence that followed the Hormuz disruption. Malhotra described that position on 20 August as "very manageable".

The swap window does not shrink that position. It adds to it. In each transaction the RBI buys dollars spot and commits to sell them forward, which is the textbook definition of a short forward dollar position. Gross reserves and forward liabilities are rising together, on the same trade.

Every dollar the RBI absorbs is also paid for in rupees. At a reference rate near ₹95.5 to the dollar, roughly $73 billion of swap inflows implies something in the region of ₹7 trillion of rupee liquidity created. That is our own arithmetic on published figures rather than an RBI disclosure, and the true number will differ with settlement dates. The direction is not in doubt: the RBI has handed itself a substantial sterilisation task at the moment it is trying to keep policy neutral. At its August review the Monetary Policy Committee held the repo rate at 5.25 per cent, kept a neutral stance, raised its FY27 growth forecast to 6.7 per cent and trimmed its inflation projection to 5 per cent.

On conventional adequacy metrics the buffer remains strong. Reserves cover more than eleven months of goods imports and 94 per cent of external debt outstanding at end-March 2026, far above the three-month import cover long used as a rough benchmark. India is not exposed on those measures. But the marginal dollar added since June is a different quality of asset from the marginal dollar added in 2021.

Where the money lands#

The immediate beneficiary is the banking system's liability structure. Deposit growth has jumped, and banks have signalled they will retire expensive bulk deposits first.

The cost shows up in margins, which are expected to compress by 3 to 15 basis points, though most analysts view the effect as temporary. Banks are already lining up the next wave of dollar bond issuance, with HDFC Bank and Punjab National Bank among those preparing deals.

For the rupee, the effect has been muted, which is itself informative. The currency depreciated 0.21 per cent during the week reserves hit their record, and the RBI reference rate stood at 95.561 on 28 August, close to the all-time low of 96.84 touched in May. Reserves are rising because the RBI is buying the inflows rather than letting them lift the currency. That deliberate choice has revived a familiar debate about how tightly the rupee is managed.

Fixed income desks should watch the liquidity channel. Large rupee injections compress short-end yields unless offset, while the sterilisation that follows does the opposite. Yields hardened in the second half of August on rising crude and a hawkish read of the MPC.

The case for caution#

Start with timing. Deposits mobilised between June and August 2026, at three to five years, mature in a bunched window between roughly mid-2029 and 2031. Redemptions that arrive together are harder to manage.

Then there is the subsidy. The RBI is absorbing the hedging cost, which means it carries a currency risk that would otherwise sit with banks or depositors. If the rupee depreciates materially over the swap tenor, that cost lands on the central bank's balance sheet and eventually on its transferable surplus to the government.

Money that arrives for a 6-7 per cent dollar yield is also, by construction, yield-seeking. It is not the sticky, trade-linked or equity-linked inflow that builds a durable external position. Once the concession goes, so does much of the incentive to roll.

Most importantly, the scheme does not touch the source of the pressure, which is energy. The Centre for Research on Energy and Clean Air estimates the Hormuz crisis added $22 billion in gross additional fossil fuel import costs between March and August 2026, with a net cost of $14.4 billion, or 0.38 per cent of GDP. Brent averaged $93 a barrel over that period. A swap window finances a current account gap. It does not close one.

There is a reasonable counter. The RBI entered the episode with $682.3 billion in reserves and called them adequate, so this was never a scramble for liquidity. It was, on the central bank's own account, an attempt to strengthen the capital account while the current account was under strain. Judged on that objective it has plainly worked.

2013, 2016 and what is different now#

India has run this play before. In September 2013, with the rupee in free fall after the taper tantrum, Raghuram Rajan opened a concessional FCNR(B) swap at a fixed 3.5 per cent, roughly three percentage points below market. It raised about $34 billion, of which $26 billion came through FCNR(B) deposits, $22.7 billion of it by late November.

The redemption arrived in September to November 2016. Rajan spent months telling markets the outflow, which the RBI pegged near $20 billion net of rollovers, was manageable, while the central bank quietly built forward cover on about 80 per cent of the exposure. The FCNR(B) pool fell from $44.11 billion at end-September 2016 to $20.85 billion by December. Markets absorbed it without incident.

Two differences matter. The 2013 window was a rescue deployed from weakness; the 2026 window was launched from comfort, which gives the RBI far more room to manage the exit. Against that, the 2026 scheme is between two and three times larger in dollar terms and was priced more generously.

Read this as a cyclical instrument used at unusual scale rather than a change in how India funds itself. The structural shift happened earlier, when reserve management moved from the crisis footing of 1991 to persistent accumulation. What is on display now is that framework being pushed hard.

The next data point arrives quickly. The National Statistics Office publishes Q1 FY27 GDP on 31 August, with forecasts clustered between 7 and 8 per cent against 7.8 per cent in Q4 FY26. Industrial output growth already eased to 6.7 per cent in July from a revised 8.8 per cent in June.

Key takeaways#

  1. Reserves hit a record $729.3 billion, but roughly $73 billion arrived through a swap facility carrying a matching forward obligation. Gross and net reserves have diverged.
  2. The RBI's net short forward dollar book, around $106.6 billion at end-May, grows with every swap. The trade that lifts the headline lifts the liability too.
  3. The window closes to new FCNR(B) deposits on 31 August, with swaps executable until 11 September. The ECB and OFCB windows stay open to 31 December.
  4. Repayment is concentrated in roughly mid-2029 to 2031. The 2016 precedent was handled cleanly, but at a third of the scale.
  5. None of this addresses the energy import bill, which CREA puts at $14.4 billion in net additional cost, or 0.38 per cent of GDP, since March.

Frequently asked questions#

Are India's foreign exchange reserves overstated? No. They are correctly reported under IMF conventions, which measure gross reserve assets. But gross reserves do not net off forward commitments, and a swap creates one. Investors comparing reserve adequacy across countries should look at the forward book alongside the headline.

Does the swap window make the rupee stronger? Not directly. Because the RBI is buying the inflows rather than letting them reach the spot market, the effect is on the reserve stock rather than on the exchange rate. The rupee depreciated slightly during the record week.

What happens on 31 August? Only the deadline for fresh FCNR(B) deposits to qualify for the concessional swap. Banks have until 11 September to execute swaps against qualifying deposits. FCNR(B) deposits remain available as an ordinary banking product.

Will the 2029 redemption cause a problem? It is a known, dated liability, which is the easiest kind to plan for. The comparable 2016 event passed without disruption. The honest answer is that the outcome depends on reserve levels, the rupee and rollover appetite at the time, none of which can be forecast with confidence today.

Why did the RBI subsidise this rather than raise rates? Raising the policy rate to defend the currency would have tightened domestic credit during an energy shock. The swap window targets the capital account directly without changing the domestic cost of money.

Should retail investors read anything into a record reserve number? It measures the sovereign's external buffer. It says very little about equity or bond valuations. This article is informational and is not investment advice.

Is $729 billion enough? On standard metrics, comfortably. It covers more than eleven months of goods imports and 94 per cent of external debt. Adequacy is a function of the shock, not an absolute threshold.

Glossary#

FCNR(B) deposit. Foreign Currency Non-Resident (Bank) deposit. A term deposit that a non-resident Indian holds with an Indian bank denominated in a foreign currency, so the depositor takes no rupee exchange risk.

Forex swap. Two linked currency trades: an exchange today and a reverse exchange on a set future date. Here the RBI buys dollars now and agrees to sell them back later at the same rate.

Forward book. The net position a central bank holds in forward and swap contracts. A net short dollar forward book means it has committed to deliver dollars at future dates.

Sterilisation. Offsetting the domestic money created when a central bank buys foreign currency, usually by selling government securities or absorbing liquidity, so that reserve accumulation does not loosen monetary policy.

Cash reserve ratio (CRR). The share of deposits banks must hold with the RBI in cash. Exempting a deposit from CRR makes it cheaper for the bank to fund with.

Statutory liquidity ratio (SLR). The share of deposits banks must hold in government securities and other approved assets.

Import cover. Reserves expressed as the number of months of imports they could finance. A traditional, if crude, adequacy test.

Revaluation gain. A change in the reported dollar value of reserves caused by exchange rate or asset price moves rather than by any purchase or sale.

References#

Disclosure: this article is analysis and information only. It is not investment, trading or financial advice, and it makes no recommendation to buy or sell any security or currency. Figures described as estimates, forecasts or projections are exactly that. The ₹7 trillion liquidity figure is the author's arithmetic on published inflow and exchange rate data, not an RBI disclosure.

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