The goal of the Reserve Bank of India’s circular of March 27, 2026, which capped banks’ net open rupee positions at $100 million each end of business day, was very obvious: to halt one-way speculative wagers on the currency before the harm became irreparable. The rupee was headed for its biggest yearly decline in more than ten years, having already dropped over 4% in March alone and surpassed ₹95 against the dollar intraday.
The structural factors were a grinding conflict in West Asia and oil prices above $100 per barrel. However, speculative positioning—banks and corporations engaging in large amounts of short-rupee trading in the non-deliverable future market—was intensifying the trend in ways that the RBI had made it clear it would not permit to continue.
Important Information
| Field | Details |
|---|---|
| Trigger Event | Reserve Bank of India circular dated March 27, 2026 capped banks’ net open rupee positions in the onshore deliverable forex market at $100 million per end of business day — effective April 10; previously, banks’ own boards set position limits linked to up to 25% of total Tier-I and Tier-II capital |
| Second RBI Measure (April 1, 2026) | RBI barred all authorised dealer banks from offering rupee Non-Deliverable Forward (NDF) contracts to resident or non-resident corporate clients; also prohibited rebooking of any foreign exchange derivative contracts — closing a long-standing loophole that allowed positions to be repriced under the guise of hedging |
| Why the Two-Step Was Needed | After the March 27 NOP cap, banks transferred their own NDF positions onto corporate clients’ books, briefly causing the rupee to breach the ₹95 per dollar mark intraday on Monday March 30 — prompting the April 1 follow-up ban; RBI expressed “displeasure” at this transfer |
| Bank Stock Declines (March 30, 2026) | HDFC Bank, ICICI Bank, Axis Bank, and SBI all fell sharply; Nifty Bank index fell approximately 2.6% on March 30; IndusInd Bank, Kotak Bank among the biggest intraday losers; public sector banks including Punjab National Bank and Canara Bank fell 3.4–3.9%; a prolonged rout is estimated to have erased approximately ₹8 lakh crore in bank valuations since the Middle East conflict escalated |
| SBI Exposure | Bloomberg reported State Bank of India had approximately $5 billion in bets against the rupee — roughly 20% of the total banking sector’s estimated exposure; estimated losses from forced unwinding approximately ₹300 crore ($32 million); described as “manageable” given SBI’s total assets exceed $800 billion |
| Sector-Wide Losses | Jefferies estimated mark-to-market losses of approximately ₹3,000–4,000 crore ($428–$535 million) for the banking sector from the forced position unwind |
| Rupee Context | Rupee depreciated approximately 4% in March 2026 alone; down approximately 10% in FY2025-26 — its worst annual drop in over a decade; breached ₹95 per dollar intraday on March 30; RBI foreign exchange reserves fell to $688 billion by March 27, down from nearly $730 billion at the start of March; after the crackdown, the rupee posted its biggest single-day gain in approximately 12 years on April 2, recovering to approximately ₹93.10 |
What came next was a two-step intervention that was more expensive for the banking industry than most had predicted and more surgical than blunt. The first step was the March 27 position cap, which replaced the previous system where each bank’s board established its own overnight restrictions, frequently up to 25 percent of capital. In response, banks moved the bets to corporate clients, which is what treasury desks usually do when a regulator limits their own books.
On the morning of Monday, March 30, the rupee did, however, momentarily surpass ₹95 intraday. That day, the Nifty Bank index began trading 2.6% lower. Axis Bank, ICICI Bank, SBI, and HDFC Bank all failed. All of the index’s components concluded the day losing money.
The breach that the banks had exploited was addressed by the April 1 follow-up circular. The RBI completely prohibited authorized dealer banks from providing rupee NDF contracts to corporate clients, whether they were residents or not. Additionally, it forbade the rebooking of any foreign exchange derivative contract, which the RBI described as a loophole that permits speculative posture to persist under the pretense of legal hedging. The message was made clear in a note from Shinhan Bank’s head of treasury, Kunal Sodhani: “The FX market is to function as a hedging mechanism aligned with real economic activity, not as a platform for leveraged speculation.”
The exposure of the banking sector proved to be more concentrated than the public position caps indicated. According to Bloomberg, State Bank of India alone held about $5 billion in positions against the rupee that were impacted by the crackdown, or about 20% of the $25 billion estimated industry exposure. Given that the bank’s overall assets exceed $800 billion, management deemed SBI’s expected losses from forced unwinding to be tolerable at about ₹300 crore. However, Jefferies reported broader sector mark-to-market losses of between ₹3,000 and ₹4,000 crore. This is the kind of figure that significantly affects quarterly treasury income, especially for private sector banks with busy treasury desks.
The RBI’s desired price outcome was achieved by the crackdown. The rupee recovered from ₹95.22 to roughly ₹93.10 on April 2, marking its largest single-day rise in about twelve years. Although reserves did drop from about $730 billion to $688 billion in March, the RBI mostly accomplished this by removing the speculative machinery that had been exacerbating the structural weakness rather than by selling dollars from reserves. After widening considerably, the difference between onshore forward rates and offshore NDF rates decreased.
Here, there is a lengthier pattern that is noteworthy. During times of rupee difficulty, the RBI has occasionally prohibited banks from creating NDF positions; this was done informally in October 2022, again in 2023, and now with formal circulars in 2026. Every time, the same tension arises: the arbitrage trade magnifies the currency’s movement, banks profit from the difference between onshore and offshore prices, and the regulator eventually steps in to halt it.
The scale of the roles involved and the formality of the response were different this time. T. Rabi Sankar, the deputy governor of the RBI, used the annual foreign exchange dealers’ conference in Paris as a global platform to publicly denounce banks for moving arbitrage trades onto the books of corporate clients, pointing out that these corporations are legally forbidden from engaging in speculative transactions.
The currency defense’s viability once oil prices and geopolitical factors resurface is still up for debate. The structural issues, such as India’s reliance on energy imports and the strain on its current account, have not altered. The speculative layer on top of those foundations is what has altered. When the next set of Treasury results is released, bank shareholders will be waiting to see if that makes a lasting difference or if the rupee starts to decline again as soon as the positions settle.
