India Burns $11.7bn in Forex Reserves in One Week as Iran War Drains Currency Defense

India’s central bank burned through $11.7bn in foreign exchange reserves during the week ending March 6, the steepest weekly decline since November 2024, as it fought to stabilise the rupee against Iran war-induced depreciation. The drop—from $728.49bn to $716.81bn—marks a material acceleration in intervention intensity and exposes acute emerging-market vulnerability to energy-price shocks. At current burn rates, India’s reserve buffer faces psychological threshold risk around $550bn, raising questions about the sustainability of unilateral currency defense.

The Mechanics of Currency Defense

The Reserve Bank of India sold an estimated $6.1bn in the spot market during the week, according to Republic World citing IDFC FIRST Bank analysis, with an additional $5.4bn lost to valuation changes as global asset prices shifted. Foreign currency assets fell $9.8bn while gold reserves declined $1.6bn, per Business Standard. The rupee weakened to multi-year lows around ₹92.50–92.60 per dollar in mid-March despite the intervention, according to Investrekk, as foreign portfolio investors accelerated outflows and Oil Prices surged nearly 40% since the West Asia conflict began.

This intervention intensity is not unprecedented—the RBI conducted record $20.23bn in net spot dollar sales during November 2024, the highest monthly intervention since 2000 and larger than during the global financial crisis, according to Ideas for India. By November 2024, the central bank had accumulated a short position of approximately $65bn in the offshore non-deliverable forward market. But March 2026’s burn rate suggests the earlier intervention merely deferred the pressure rather than resolved it.

The Energy-Inflation Transmission

India imports over 80% of its energy consumption, making rupee weakness a direct inflation accelerant. A sustained $10/barrel crude increase could widen the current account deficit by 40–50 basis points, according to India Briefing. Brent has risen nearly 40% since the Iran conflict began, per Business Standard, directly feeding into import costs and constraining the RBI’s already-hawkish monetary stance.

Goldman Sachs expects the rupee to fall to 95 against the dollar over the next year due to Iran conflict fallout and widening external imbalances. That projection compounds the central bank’s dilemma: defending the currency burns reserves and limits future intervention capacity, while allowing depreciation accelerates imported inflation and increases the financial burden on Indian companies with unhedged dollar-denominated debt, according to FXStreet.

The Reserve Adequacy Question

Former RBI Deputy Governor Michael Patra argues that India needs $1trn in forex reserves to ensure robust intervention capacity during sustained stress, according to Business Standard. At the current $717bn level—down from $728bn just one week earlier—the gap between actual reserves and Patra’s proposed target is widening. He frames reserve depth as a deterrent: “The level of reserves is also important from a market sensitivity point of view. Punting against such a level should be beyond the reach of the opportunistic and/or the faint-hearted.”

But if weekly drawdowns of $11bn become normalised, the psychological $550bn threshold—below which intervention credibility weakens—could be reached within months. That threshold is not mechanical; it reflects market perception of the central bank’s willingness and ability to defend the currency without triggering capital controls or policy reversals.

Broader Emerging-Market Implications

India typically leads emerging-market stress indicators due to its size, liquidity, and sensitivity to energy prices. Similar pressures are likely building in Indonesia, Turkey, and Pakistan—all oil importers with external financing needs and limited reserve cushions. The rupee’s trajectory offers a real-time case study in the limits of unilateral intervention when the underlying shock—surging energy costs from geopolitical conflict—remains unresolved.

Banks are already repositioning. Barclays is backing rupee weakness against the Chinese yuan, while HSBC favours the Singapore dollar, according to Business Standard. These cross-currency trades reflect a broader reassessment of emerging-market currency stability in the face of energy-supply shocks and capital flight.

For Indian equities, rupee depreciation creates divergent effects: exporters with dollar revenue streams benefit from translation gains, while importers and corporates with unhedged foreign debt face margin compression and balance-sheet stress. Bond markets are pricing in higher inflation risk, constraining the RBI’s ability to ease policy even if growth slows.

What to Watch

Weekly RBI reserve data through mid-March will clarify whether the $11.7bn drawdown was an anomaly or the start of sustained intervention. If reserves fall below $700bn, market attention will shift to the $550bn threshold and the credibility of continued defense. Oil price trajectory remains the critical variable—Brent stability below $95/barrel eases pressure, while sustained moves above $100 force an acute stagflation trade-off. Watch for similar reserve drawdowns in Indonesia and Turkey as secondary confirmation of broader EM contagion. Corporate earnings reports in April will quantify the impact of rupee weakness on unhedged dollar liabilities. Finally, any shift in RBI rhetoric from “orderly currency management” to tolerance for greater volatility would signal a strategic retreat from intensive intervention.