
Introduction
The exchange rate is the price of a country’s currency in terms of another country’s currency.How to calculate Exchange rate?
- It is calculated by relating the value of one currency to other country currency
 - In mathematical terms, Exchange rate = (price of domestic currency)/(price of foreign currency)
 - Example: $1 = 65 rupees implies that one has to give 65 rupees to get $1
 
Who determines Exchange rate?
- After World War II, World Bank and IMF were formed to reconstruct the war-torn world nations
 - IMF determined the exchange rate initially with the quota of the developed nations
 - Later, UK withdraw from the fixed rate regime and fixed its own currency rate depending on market conditions
 - Gradually, countries also started moving to the floating currency regime
 - Currently, the central bank of nations have the power to determine the exchange rate by buying and selling currencies in the foreign exchange market
 
How to determine Exchange rate?
- To determine the exchange rate, there are three generally used methods
 - Fixed exchange rate
 - Floating exchange rate
 - Crawling peg exchange rate
 
Fixed Exchange Rate
- Also called as pegged exchange rate
 - Central bank of a nation fixes and maintains the exchange rate
 - The domestic price of the currency will generally be set against US dollar or other world currency like Euro, Yen or IMF basket of currencies
 - Central bank will sell and buy its own currency from the foreign exchange market against the pegged currency
 - RBI has been following the fixed exchange rate till 1991
 - Now complete fixed exchange rate regime has come to an end and only a combination of fixed and floating rate are employed in the foreign exchange market
 
Floating Exchange Rate
- Floating exchange rate is determined by demand and supply prevailing in the market
 - Rate determined solely by the market
 - Exchange rate constantly changes periodically (even on daily basis)
 - Also termed as the self-correcting exchange rate
 - When the demand for a currency in foreign exchange market becomes low, then its imports become expensive and ultimately its value will decrease
 - This will cause heavy demand for goods and services domestically
 - This, in turn, results in the creation of more jobs domestically
 - Thus an automatic correction is made balancing the demand and supply in the floating currency regime
 - The exchange rate changes in global scenario will affect the domestic currency in the floating rate regime
 - Currently, this is the widely accepted and adopted currency regime by the world nations
 
Crawling Peg Exchange Rate
- Also known as Dirty Floating rate
 - This is a combination of fixed and floating exchange rate
 - Government allows the currency to fluctuate freely in a given band determined by the central bank
 - Once the currency exceeds the band fixed by central bank, Government intervenes in the foreign exchange market to stabilise the domestic economy
 
Implications of Exchange rate
- Appreciation of exchange rate or rupee appreciation implies rise in exchange rate of rupee
 - Depreciation of exchange rate or rupee depreciation implies fall in exchange rate of rupee
 - Both appreciation and depreciation of currency occurs as a result of change in supply and demand of the currency in the foreign exchange market
 - Depreciation of currency favours exports and makes imports costlier
 - Appreciation of currency favours imports and makes exports costlier
 - Devaluation of currency is similar to depreciation of currency
 - India devalued its currency during the 1991 Balance of Payment crisis
 - Recently China devalued its currency Yuan
 - RBI has the power to devalue the rupee by selling more rupees and buying dollars from the foreign exchange market
 - Similarly, RBI can revalue the rupee by selling dollars and buying rupees
 - The activities of devaluation and revaluation of currency are associated with the fixed exchange rate regime