The exchange rate between the Indian rupee and the US dollar, commonly expressed as USD/INR, tells you how many rupees are needed to buy one US dollar. On Thursday, the reference rate stood at 95.16, with the rupee gaining marginally. A lower USD/INR number means the rupee has strengthened — you need fewer rupees to buy a dollar. A higher number means the rupee has weakened. This seemingly simple figure has wide-ranging consequences across Indian industry and financial markets.

When the rupee moves against the dollar, it does not affect all Indian businesses in the same way — some face headwinds while others see tailwinds, depending on whether they earn or spend in foreign currency.

For companies that earn revenue in US dollars — such as those in the IT services and software export sector — a weaker rupee is generally beneficial in accounting terms. When they bring dollar earnings back to India, they receive more rupees for each dollar, which can improve reported revenues and margins. Conversely, a stronger rupee, as seen over the past few sessions, means those same dollar earnings convert to fewer rupees. This is one reason currency moves are watched closely whenever IT-heavy indices like the NIFTY IT move. On the other side of the equation, companies that import raw materials, machinery, or energy — paid for in dollars — benefit when the rupee strengthens, because their costs fall in rupee terms. Oil importers and manufacturers reliant on imported inputs are examples of this. India imports a significant portion of its crude oil, so a stronger rupee combined with softer global crude prices, as seen today, can reduce the overall import burden for the economy.

For the broader market, the rupee's direction also influences the behaviour of foreign institutional investors. FIIs invest in Indian assets using dollars; when the rupee weakens significantly, their returns in dollar terms shrink even if Indian stock prices rise in rupee terms. This can sometimes prompt FIIs to reduce exposure, contributing to outflows — though many factors drive those decisions simultaneously. Today's data showed FII net outflows of Rs 5,285 crore even as markets rose, illustrating that flows and price movements do not always move in the same direction. Understanding the USD/INR rate as one piece of a larger puzzle — alongside corporate earnings, global interest rates, and commodity prices — helps put daily market movements in a clearer context.