Economy

Exchange rate

Also: exchange rates, rupee depreciation, REER, NEER

Definition
The exchange rate is the price of one currency in terms of another, such as the number of rupees needed to buy one US dollar. It affects the prices of imports and exports, inflation, foreign debt costs and the competitiveness of a country's products.
Deep-dive lesson: Balance of Payments, Exchange Rates and Convertibility. This page is a quick reference that connects the term across subjects; read the lesson for the full treatment.
Summary card: Exchange rate. India follows a managed float: the market sets the rate, but the RBI intervenes to curb volatility. The rupee became fully convertible on the current account in 1994. REER (real effective exchange rate) adjusts for inflation and a basket of trading partners. Forex reserves are the RBI's main tool to smooth movements
Summary card © UPSCPrep.in

Background and evolution

The impossible trinity, or policy trilemma, is a helpful frame for understanding India's choices: a country cannot simultaneously have a fixed exchange rate, free capital movement and an independent monetary policy. India has chosen a middle path, with partial capital controls, a managed exchange rate and a monetary policy focused on inflation targeting. This explains why the RBI watches the rupee closely but does not defend a fixed level.

Until 1991 the rupee's value was fixed by the authorities, first linked to the pound sterling and later to a basket of currencies. During the 1991 balance of payments crisis, the rupee was devalued in two steps, and in 1993 India moved to a market-determined exchange rate. Since then the RBI has not targeted a particular level, but it buys or sells dollars to prevent excessive swings, especially during episodes of capital outflow.

This page is not about how the balance of payments is recorded, which is covered elsewhere, but about how to interpret exchange rate movements: what makes the rupee rise or fall, how to read the different measures of its value, and who wins and loses from a stronger or weaker currency. Candidates are often asked to explain a depreciation episode and evaluate policy responses, so this practical lens is the focus here.

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Last reviewed: 23 October 2026 · Original UPSCPrep.in content.