RBI's $100M Forex Cap: Banks Face Billions in Unwinding

RBI Intervenes with Strict Forex Cap to Defend Rupee

The Reserve Bank of India (RBI) announced a significant policy shift late Friday, imposing a strict $100 million limit on the net open foreign exchange positions of banks. This move, effective from April 10, 2026, is a direct response to the Indian rupee's sharp depreciation, which saw it breach the 94-per-dollar mark for the first time. The new regulation replaces a more flexible framework that allowed banks to hold open positions up to 25% of their capital. The central bank's intervention aims to curb speculative trading and stabilize the currency amid mounting economic pressures.

Unpacking the New Regulation

In a circular released after market hours on March 27, the RBI mandated that all authorized dealer banks must ensure their open positions in the onshore currency market do not exceed $100 million at the close of each trading day. This represents a fundamental change from the previous system, where individual banks could set their own limits based on their capital base. The directive forces a uniform, stringent cap across the industry, signaling the RBI's intent to tighten its grip on currency market dynamics. The short compliance window, with a deadline of April 10, has added to the urgency and concern among market participants.

Why RBI Acted Now

The central bank's decision was triggered by a confluence of adverse factors that pushed the rupee to a record low of 94.8150 against the dollar. The currency has depreciated by over 4% since late February, making it Asia's worst-performing currency this year. The primary drivers include escalating geopolitical tensions in Iran, which have pushed crude oil prices above $100 per barrel, widening India's trade deficit. Compounding this, foreign portfolio investors (FPIs) have pulled over ₹1.27 lakh crore from Indian equities in the current calendar year, creating sustained pressure on the rupee. The RBI's action is an escalation from its previous strategy of intermittent dollar sales to a more structural control designed to reduce market volatility.

A Multi-Billion Dollar Challenge for Banks

The new cap presents a formidable challenge for Indian lenders, who now face the task of unwinding substantial foreign exchange positions. Market estimates suggest that between $10 billion and $10 billion in long-dollar positions will need to be squared off to meet the April 10 deadline. This forced selling is expected to result in significant mark-to-market (MTM) losses for banks, particularly as the fiscal year ends on March 31. Major banks, which previously held positions as high as $150-300 million each, must now drastically reduce their exposure. In response, lenders have reportedly approached the RBI, requesting a delay in the implementation and proposing that the new limit apply only to incremental positions to avoid immediate financial shocks.

Old vs. New Forex Position Limits

To understand the magnitude of the policy shift, it is useful to compare the previous and current regulatory frameworks.

Immediate Market Impact and Rupee Outlook

The immediate consequence of the RBI's directive is expected to be a sharp, albeit potentially temporary, appreciation of the rupee. As banks are forced to sell dollars in the onshore market to unwind their positions, the increased supply is likely to strengthen the local currency. Some analysts, like CR Forex Advisors, project the rupee could move into a range of 92.50-92.80 per dollar in the near term. This sudden reversal could, however, hurt banks that have built short positions on the rupee. The timing is critical, as Monday is the final trading day of the fiscal year, and banks will be keen to manage their balance sheets before the March 31 holiday.

Onshore Control vs. Offshore Influence

A significant portion of the speculative bets against the rupee was built in the offshore non-deliverable forwards (NDF) market. The strategy often involved purchasing dollars in the onshore market and selling them overseas. By imposing a strict cap on onshore positions, the RBI aims to disrupt this arbitrage and reduce the influence of the offshore market on domestic currency pricing. This move is part of a broader regulatory effort to reassert the primacy of onshore market dynamics and enhance the effectiveness of the central bank's policy actions.

Analysis: A Defensive but Disruptive Move

The RBI's decision marks a clear escalation in its defense of the rupee. By shifting from market intervention to structural controls, the central bank is signaling its low tolerance for what it perceives as excessive speculation. While the cap is a powerful tool to manage volatility, it is not without risks. The forced unwinding could create significant market disruption and inflict financial pain on the banking sector. Furthermore, the measure addresses the symptoms of rupee weakness rather than the root causes, such as high oil prices and capital outflows. The long-term stability of the currency will ultimately depend on these underlying macroeconomic factors.

Conclusion: A Volatile Period Ahead

The RBI has drawn a clear line to defend the rupee, but its action sets the stage for a period of heightened volatility. Banks now face a race against time to bring their forex positions within the new limit, a process that will likely dominate market activity in the coming days. While the rupee may see a short-term rally, its trajectory beyond that remains uncertain. The market will be closely watching for any signs of relaxation from the RBI and, more importantly, any improvement in the global economic environment that has put the currency under pressure.