Reserve Bank of India’s forex defense tool surpasses $110 billion as rupee slides

India’s central bank is burning through an unprecedented amount of financial ammunition to keep the rupee from cratering. The Reserve Bank of India’s forward dollar-selling contracts have crossed the $110 billion mark, reaching an estimated $110-115 billion in early June 2026, a record for the institution’s net-short dollar book.

Think of it like this: instead of selling dollars from its vault today and watching reserves drain in real time, the RBI is writing IOUs to sell dollars at a future date. It’s a way to defend the currency now while kicking the reserve hit down the road. The problem is that the IOUs are piling up fast, and the road isn’t getting any longer.

The numbers behind the intervention

The rupee slid past 96 per US dollar in May 2026, touching an all-time low that forced the RBI’s hand. That kind of depreciation makes oil imports more expensive, feeds into inflation, and rattles foreign investors holding rupee-denominated assets.

To fight back, the RBI deployed a two-pronged strategy. On one side, it ramped up spot dollar sales to a record $53.13 billion for the full fiscal year 2026. On the other, it leaned heavily into forward contracts, growing its net-short position from $88.8 billion in February 2025 to over $110 billion by mid-2026.

The cost has been visible on the balance sheet. India’s forex reserves dropped from $728.49 billion in February 2026 to roughly $688 billion by late March. That’s a $40 billion decline in a single month, with more than $11 billion vanishing in just one week.

The RBI has also placed restrictions on certain offshore rupee derivatives and encouraged oil companies, among the biggest dollar consumers in the Indian economy, to use special credit lines provided by the central bank rather than purchasing dollars on the open market.

Why the rupee keeps sliding

India imports roughly 85% of its crude oil needs, making it acutely sensitive to energy cost swings. When oil gets more expensive, India needs more dollars to pay for it, which weakens the rupee.

The forward sales strategy itself carries a subtle risk. Those contracts eventually mature, meaning the RBI will need to deliver dollars at the agreed-upon future dates. If the rupee hasn’t stabilized by then, the central bank could face a situation where it’s simultaneously defending the currency in real time and settling old commitments.

What this means for investors

The reserve decline from $728.49 billion to $688 billion also deserves attention. India’s reserves are still substantial by global standards, but the velocity of the drawdown matters as much as the absolute level. Losing $40 billion in a month signals that the current rate of defense isn’t cheap.

For crypto markets specifically, a weakening rupee and tightening capital controls have historically correlated with increased interest in alternative stores of value among Indian retail investors. India remains one of the world’s largest crypto user bases, and currency instability tends to sharpen the appeal of assets that aren’t tied to any single central bank’s policy decisions.

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