Forex Intervention
Forex Intervention refers to deliberate actions by the Reserve Bank of India in the foreign exchange market—buying or selling US dollars against the Indian rupee—to manage exchange rate volatility, build or deploy foreign currency reserves, and maintain orderly market conditions.
India operates a managed floating exchange rate regime. The rupee's value is primarily determined by market forces of supply and demand, but the RBI intervenes in the forex market when it judges that currency movements are excessively volatile, disorderly, or misaligned with fundamentals. Unlike a fixed exchange rate system, the RBI does not target a specific rupee level but aims to prevent sharp, destabilising swings.
When the RBI buys dollars (sells rupees) in the spot market, it prevents the rupee from appreciating too sharply—which could harm export competitiveness—and simultaneously builds foreign exchange reserves. When it sells dollars (buys rupees), it prevents excessive depreciation that could fuel imported inflation and erode investor confidence. The RBI also uses forward and swap markets for intervention, smoothing near-term exchange rate pressures without immediately drawing down spot reserves.
India's foreign exchange reserves crossed $700 billion in September 2021, a peak that reflected massive RBI dollar purchases during the FPI inflow surge of 2020–2021. When global risk sentiment deteriorated in 2022 and FPI outflows intensified following US Fed rate hikes, the RBI deployed reserves—which fell to around $530 billion by October 2022—to moderate rupee depreciation. This active management kept the rupee more stable than several peer emerging market currencies during that episode.
The RBI's intervention operations have side effects. Buying dollars injects rupee liquidity into the banking system, which can be inflationary if not sterilised. The RBI sterilises this by simultaneously selling government securities through open market operations (OMO sales) or conducting repo/reverse repo to absorb the excess rupee liquidity. The cost of sterilisation—paying domestic interest rates on rupee securities while earning lower US rates on dollar reserves—is called the quasi-fiscal cost of reserve accumulation.
For equity investors, sustained RBI dollar buying (reserve accumulation) indicates that the rupee is under upward pressure, which is associated with strong capital inflows and a positive macro environment. Conversely, reserve depletion episodes signal external stress, which often coincides with risk-off sentiment in Indian equity markets.