India’s $18.343 Billion Reserve Drop Hides a $200 Billion Tab

India’s foreign exchange reserves fell $18.343 billion to $747.557 billion in the week ended September 25, the Reserve Bank of India said on October 2. Foreign currency assets accounted for $15.570 billion of that drop, after the rupee traded through 96 per dollar and the central bank sold dollars in the spot and forward markets.

India’s Reserves Fall $18.343 Billion in One Week

The Reserve Bank’s weekly statistical supplement dated October 2 put total reserves at $747.557 billion, down $18.343 billion from $765.901 billion a week earlier. Market data treat that print as the largest weekly decline on record. It was also the third straight weekly fall after reserves hit a record $785.706 billion in the week ended September 4, a three-week loss of $38.149 billion.

Foreign currency assets, the bulk of the stockpile, declined $15.570 billion to $615.411 billion. Those assets are valued in dollars, so a weaker euro, pound or yen against the dollar also cuts the headline even when no dollars are sold. Gold holdings fell $2.591 billion to $108.701 billion. Special Drawing Rights slipped $97 million to $18.642 billion, and India’s reserve position at the International Monetary Fund slipped $86 million to $4.804 billion.

THE WEEK ENDED SEPTEMBER 25

Gaura Sengupta, chief economist at IDFC First Bank, split the month’s cash sales from the valuation hit. She said the RBI sold a net $11.8 billion in September, and that gold and other currency holdings made up the rest of the decline. Cumulatively, she said, the RBI sold a net $22.4 billion between September 11 and September 25, after the swap window closed. Those two figures describe different periods: full-month net sales versus the two weeks of selling once the deposit window had shut.

The week ended September 18 had already taken $14.881 billion off the pile, the sharpest weekly fall since November 15, 2024. Sengupta put actual dollar sales that week at $10.9 billion, with the remainder a revaluation loss. Reserves were still $56.450 billion above their end-March 2026 level and $47.322 billion higher than a year earlier. The buffer is large. The speed of the retreat is the new fact.

The $200 Billion Forward Book

The weekly print is the cash side of a larger dollar book. At the end of August the RBI’s net short dollar position in forwards stood at a record $200.06 billion, up from $136.77 billion at the end of July. Most of that jump sat in contracts due after one year, which nearly doubled to $176.57 billion from $91.54 billion.

Long dollar positions rose to $31.66 billion from $2.43 billion, all of them due within one month, which is the footprint of sell/buy swaps used to pull existing shorts forward and drain rupee cash. After that long book is netted off, the short position due within one year fell to about $23.5 billion from $45.2 billion. The stock of dollar IOUs did not shrink. It was restacked into later years.

AUGUST-END FORWARD BOOK

• Net short: $200.06 billion, up from $136.77 billion in July.
• One-month shorts: $19.54 billion, against $31.66 billion of one-month longs.
• One to three months: $11 billion of shorts.
• Three months to one year: $24.60 billion of shorts.
• Beyond one year: $176.57 billion of shorts, up from $91.54 billion.

A private-bank treasury head said in late September that sell/buy swaps were still running and that the short book should have peaked in August. Sengupta read the same table differently. Long-dollar additions, she said, imply sell/buy swaps, and the RBI looks unable to let the shorts run off in full because the rupee is still under pressure.

WHERE EXPERTS DISAGREE

• Bank treasuries: Sell/buy swaps should already be shrinking the August peak, so the short book has topped out.
• Gaura Sengupta: Depreciation pressure on the rupee stops the RBI from allowing complete maturity of the shorts.
• DBS: Near-term work is to manage liquidity, lower the forwards book, and support the rupee, with some reserves earmarked against those liabilities.

DBS analysts put the operational order in one line.

In the near-term, priorities will be to manage liquidity, gradually lower the sizeable forwards book, and support the domestic currency.

DBS analysts, research note

A headline stockpile of $747.557 billion still looks ample next to a $200.06 billion forward short. Subtract the IOU, and the unencumbered dollar stock is thinner than the weekly table implies, which is why a record weekly drop can arrive so soon after a record high.

What the Swap Dollars Bought

The peak itself was built with borrowed dollars. On June 8 the RBI opened a special US dollar-rupee swap covering fresh FCNR(B) deposits, overseas foreign currency borrowings and external commercial borrowings, a 2013-style tool aimed at the balance of payments after the rupee had been pushed toward 97. Banks sold dollars to the RBI today and agreed to buy them back at the end of the tenor, so reserves rose on the spot leg and a forward dollar liability was booked on the far leg.

The three-to-five-year FCNR(B) swap facility was the main pipe. Deposits had to run at least three years and no more than five, the swap tenor matched the deposit, and swaps with the RBI could not be cancelled. Fresh FCNR(B) amounts in that tenor were also freed from CRR and SLR, which cheapened the product for banks. The RBI closed the FCNR(B) window on August 31, a month early, after saying the objective had been met. The ECB and OFCB windows stay open until December 31, 2026.

By September 18, authorised dealer banks had reported $143.596 billion of swap inflows. FCNR(B) deposits mobilised through August 31 were $132.980 billion. OFCBs added $5.320 billion and ECBs $5.296 billion. Reserves then printed $785.706 billion in the week ended September 4. The dollars were real. So was the promise to give them back.

FROM THE JUNE SWAP TO THE OCTOBER PRINT

1. June 8, 2026: RBI opens the US dollar-rupee swap for FCNR(B) deposits, ECBs and OFCBs.
2. August 31, 2026: FCNR(B) window closes with $132.980 billion mobilised.
3. September 4, 2026: Reserves peak at $785.706 billion.
4. September 11, 2026: Last FCNR swap date; Sengupta dates $22.4 billion of net sales from here through September 25.
5. September 18, 2026: Reserves fall $14.881 billion to $765.901 billion.
6. September 25, 2026: Reserves fall $18.343 billion to $747.557 billion.
7. October 2, 2026: RBI publishes the weekly extract.
8. December 31, 2026: ECB and OFCB swap windows are scheduled to close.

The inflows never moved one-for-one into the published stock. Banking writer Tamal Bandyopadhyay flagged that gap in July, when early scheme inflows of $20.7 billion had lifted headline reserves by only about $6 billion. He listed three leaks: spot dollar sales, forwards being allowed to mature, and money rotating out of old NRI accounts into the new product. Spot sales are now in the weekly table. The forward book shows the rest of the dollars were parked as a future delivery, not as free firepower.

Oil and Treasury Yields Pushed the Rupee Through 96

The RBI does not publish a reason for each weekly move. Dealers still tie the September selling to a rupee that was already under oil and yield pressure. India imports nearly 90 percent of the crude it uses. Brent rose to $108.2 a barrel on September 28 and to $107.4 on September 29, and it was still above $100 as the rupee traded through 96. The Petroleum Planning and Analysis Cell put the crude import bill at $74.8 billion in April-August 2026, up 48 percent from a year earlier even though volumes were broadly unchanged.

On September 28 the rupee settled at 95.9825 per dollar, with state-bank dollar sales capping the move. On September 29 it traded as weak as 96.1475 before those sales trimmed the loss. On October 1 it depreciated 0.5 percent to 96.31 per dollar, with the US 10-year Treasury yield at 5.34 percent. A foreign-bank trader said 96 was the floor and that the RBI did not look ready to let the rate pass it. Amit Pabari, managing director at CR Forex, called 96.10-96.20 a resistance zone and said a break below 95.70 would open 95.20-95.00.

The floor did not hold as a hard line. The rupee printed through 96, and the reserve table moved with it. Dollar sales can slow a slide. They did not reverse the oil bill or the yield gap that was pulling funds toward the dollar.

A ₹311,826 Crore Liquidity Drain

The same week’s accounts show the rupee side of the operation. On September 25 the RBI absorbed a net ₹311,826 crore, with ₹221,744 crore parked in the standing deposit facility. Net absorption was ₹263,274 crore on September 24 and ₹253,142 crore on September 22. Sell/buy dollar-rupee swaps pull rupees out of banks as well as bringing forward dollar shorts, and bankers had already put the cash drained by those FX operations at about $20 billion.

That is why a falling reserve number and a tight rupee-liquidity print can show up together. Spot dollar sales cut the foreign-currency line. Swaps that shrink the near-term short book take rupees out of the system. The rupee stays offered, so the shorts cannot be retired in full, and the cash drain continues. The weekly reserve drop is one ledger. The SDF balances are the other.

The FCNR Dollar Return From 2029

FCNR(B) deposits under the facility run three to five years, so the dollars come back due between 2029 and 2031. Banks must repay depositors in the same foreign currency, and the RBI must deliver dollars on the far leg of the swaps. August’s $176.57 billion of shorts beyond one year is the published shape of that calendar. Extra ECB and OFCB inflows before December 31, 2026, would raise reserves again and add to the same book.

It’s a puzzle for me: Where’s the forex flow gone? It’s neither reflecting on forex reserves nor on INR liquidity.

Tamal Bandyopadhyay, banking writer, July 24, 2026

The July puzzle is now a September invoice. Swap dollars that never fully appeared in the weekly stock are showing up as sales, as revaluation, and as a $200.06 billion short. The scheme plugged a dollar gap in the summer. It did not create a spare reserve the RBI can spend without booking a later delivery, and the first large cash bill arrived in the weeks after the window shut, with the rupee already through 96.

The ECB and OFCB windows remain open until December 31, 2026, so more swap dollars can still arrive. They will also add to the forward book that August already took to $200.06 billion.