Investor Corner/The wider picture/Risk, Regulation & Advanced Ideas
5.3.5 Currency Risk (International)
Currency risk arises when investing abroad. Even if the foreign market performs well in its own currency, the return actually received in rupees can differ meaningfully depending on how the rupee moved over the same period.
How currency movement changes the outcome
If a US fund returns 12% in dollar terms over a year, and the rupee weakens against the dollar over that same period, the return converted back into rupees will typically be higher than 12%, because each dollar of gain is now worth more rupees than it was at the start. If the rupee instead strengthens against the dollar, the rupee return will typically be lower than the dollar return, sometimes considerably so.
Currency risk is the possibility that changes in the exchange rate between the Indian rupee and a foreign currency will affect the rupee-denominated return of an international investment. If you invest in a US equity fund and the dollar weakens against the rupee by 5% during your holding period, your rupee return will be 5% lower than the fund's dollar return. Conversely, if the dollar strengthens by 5%, your rupee return will be 5% higher.
Why this can work for or against an investor
Currency movement adds a genuine layer of both risk and potential extra return that is entirely separate from how the underlying foreign market itself actually performed. Over long periods, currency effects can meaningfully add to or subtract from an international investment's rupee return, and predicting currency direction in advance is at least as difficult as predicting stock market direction.
Historically, the rupee has depreciated against the US dollar at an average rate of roughly 3-4% per year over multi-decade periods, reflecting the inflation differential between the two economies. This structural depreciation tends to add to the rupee return of dollar-denominated investments over long holding periods. However, the depreciation is not steady; it comes in bursts (sharp rupee weakness during global crises or oil price spikes) interspersed with periods of relative stability or even modest appreciation.
For short-term international investments, currency risk can dominate the return. A 10% gain in a US stock fund can be entirely erased by a 10% rupee appreciation (rare but possible over short periods). For long-term investments (10+ years), the structural depreciation trend makes currency risk less threatening and potentially additive. This is why international diversification is recommended as a long-term allocation, not a short-term tactical trade.
Living with the uncertainty
Most retail international funds available in India do not hedge this currency exposure, meaning investors are accepting both the foreign market's own return and the currency's movement as a single combined outcome. Understanding that this added variability exists, rather than being surprised by it later, is the more important takeaway than trying to actively predict which direction the currency will move.
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For Indian investors, currency risk also exists in domestic investments indirectly. Companies in the Nifty 50 that earn significant revenue in foreign currencies (IT services, pharma exporters) benefit from rupee depreciation and suffer from rupee appreciation. Holding these stocks provides implicit international currency exposure even within a domestic portfolio. Understanding this exposure helps avoid over-concentrating currency risk when adding explicit international funds on top of a domestic portfolio that is already partially dollar-linked through its constituent companies.