RBI Dollar-Rupee Swap Window Raises $136.4 Billion, 93% From FCNR Deposits

Blitz India Business

Mumbai · The Reserve Bank’s special dollar-rupee swap window ran for eighty-four days and drew about $136.4 billion. Nearly half of it arrived in the last ten.

On 8 June 2026 the Reserve Bank of India opened a special dollar-rupee swap facility with three doors into it: deposits by non-resident Indians under the FCNR(B) route, external commercial borrowings, and overseas foreign-currency borrowings by banks. The deposit door shut on 31 August. On 2 September the central bank published what had come through. The total, on provisional data from authorised dealer banks, was about $136.4 billion.
That number has been widely reported. What follows has not been, because it requires putting two of the Reserve Bank’s own disclosures side by side and doing the subtraction.

The arithmetic nobody did

As at 21 August 2026, the same facility had drawn $72.85 billion. As at 31 August, it had drawn about $136.38 billion. The difference is $63.53 billion — an increase of 87.2 per cent in ten days.
Now measure that against the whole life of the window. From 8 June to 31 August is eighty-four days. Across those eighty-four days the facility averaged about $1.62 billion a day. Across the final ten it averaged about $6.35 billion a day — very nearly four times the pace. Put the two together and the finding states itself: 46.6 per cent of everything the window raised in eighty-four days arrived in its last ten.

This is not a surprise so much as a confirmation of how deadlines work in wholesale finance, and it is worth saying plainly because it changes how the number should be read. A facility that raises half its total in the last eighth of its life has not been steadily drawing money for three months; it has been assembling a pipeline for three months and emptying it into the last week. Banks were arranging deposits, documenting them and booking them against a closing date. The Reserve Bank appears to have anticipated exactly this: banks may still avail the swap for deposits already contracted, up to 11 September.

Blitz Data Card · Mumbai, 3 September 2026

The Special USD–INR Swap Window, 8 June To 31 August 2026

THE COMPARISON — DRAWN TO SCALE

Whole window, 84 days — US$ 136.38 bn
Last 10 days alone — US$ 63.53 bn
First 74 days — US$ 72.85 bn

THE DIFFERENCE — The last ten days carried 46.58 per cent of the whole window and fell only 12.79 per cent below the first seventy-four days put together — a daily pace 3.91 times the eighty-four-day average. All three differences computed at this desk.

BLITZ CALCULATION

136.38 − 72.85 = US$ 63.53 bn in ten days, a rise of 87.2 per cent and 46.6 per cent of the window’s entire total. Daily pace: US$ 6.35 bn in the last ten days against US$ 1.62 bn across all eighty-four — 3.9 times the average. FCNR(B) share of the total: 93.29 per cent. Leg-sum check: 127.22 + 5.26 + 3.89 = 136.37, and 127.23 + 5.26 + 3.89 = 136.38 — both published roundings reconcile exactly to their own totals, so the one-hundredth-of-a-billion discrepancy between reports is rounding on the FCNR(B) leg and nothing more. None of these figures appears in any release.

APPRECIATION — WHOSE WORK THIS IS

The Reserve Bank of India, which designed the window and shut the FCNR(B) door on the day it had said it would, the authorised dealer banks that reported through it, and the non-resident depositors who supplied ninety-three per cent of everything that came in.

WHAT INDIA GAINS

Foreign currency contracted for three to five years rather than borrowed overnight — the kind of liability that does not run at the first shock. For Indians abroad, a rupee-hedged home for savings; for the country, a buffer that steadies the currency without spending reserves to do it.

Ninety-three per cent of it was households

The composition deserves as much attention as the total. Of about $136.4 billion, roughly $127.2 billion came through FCNR(B) — deposits placed by non-resident Indians. Overseas foreign-currency borrowings contributed $5.26 billion and external commercial borrowings $3.89 billion. That makes the deposit route 93.29 per cent of everything raised, computed here.

The distinction is not technical. An external commercial borrowing is a corporate treasury decision. An FCNR(B) deposit is a family decision — a doctor in New Jersey, an engineer in Dubai, a nurse in Manchester, choosing where to put savings. Nine-tenths of a $136 billion inflow was assembled out of household choices, one deposit at a time. That is the Indian diaspora functioning as a balance-of-payments instrument, and it is a thing very few countries have.

Nor is the tenor incidental. These are swap deposits with a minimum maturity of three years and a maximum of five, and most of the money came in at the five-year end. Foreign currency that cannot leave for five years is a different animal from foreign currency that can leave on Monday. It is the difference between a deposit and a hot flow.

Eighty-four days, $136 billion, and nearly half of it in the final ten. The window did not fill steadily. It filled at the door.

The three doors

• FCNR(B) deposits — ~$127.2 bn, closed 31 Aug 2026
• Overseas FC borrowings — $5.26 bn, open to 31 Dec 2026
• External commercial borrowings — $3.89 bn, open to 31 Dec 2026
• Grace — deposits already contracted may be swapped to 11 Sept