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How are Exchange Rates are Determined?

Learn how countries determine exchange rates with methods like fixed, floating, and managed floating systems. Understand the impact of global trade, speculation, and interest rates on currency values.
authorImageMridula Sharma12 Sept, 2024
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Exchange Rate Determination

Countries adopt different methods to fix exchange rates for their currencies. A nation's policy largely determines how exchange rates are set in a free market.

For CA Exams , understanding exchange rates and their daily, even hourly, fluctuations is essential. Exchange rates dictate how many units of one currency can be exchanged for another. Despite the rise of global trade, there is no universal currency. Every country trading goods and services faces the challenge of navigating exchange rates. It wasn't until after World War II, in the latter half of the 20th century, that modern exchange rate systems were introduced. As global trade expanded, financial systems adapted to accommodate these changes.

Exchange Rate Determination

Each nation uses its own approach to determine its currency's exchange rate. There are three primary methods for doing this: the fixed exchange rate, the managed floating (or pegged) exchange rate, and the flexible exchange rate.

How Exchange Rates are Determined?

Each country follows its own method to determine the value of its currency. The most common ways to establish exchange rates include the fixed exchange rate, managed floating exchange rate, and flexible exchange rate systems.

Flexible Exchange Rate

Also known as a "pegged exchange rate system," this approach allows governments to monitor and adjust their currency’s value. The currency may be tied to specific currencies, either individually or as a group, or linked to the country’s reserves of gold and foreign currency. China is a well-known example of a country with a fixed exchange regime, where the central bank actively manages the exchange rate. In this system, market forces do not solely determine the rate. When significant fluctuations occur in the foreign exchange market, central banks step in to buy or sell reserves to stabilize the currency.

Floating Exchange Rate

A floating exchange rate is determined by market forces and changes based on supply and demand. Currencies that operate under this system are known as "floating currencies." For instance, the US dollar is a floating currency. Many economists prefer floating exchange rates, believing that the market should naturally set the value of a currency. For example, when crude oil prices rise, the value of the US dollar usually decreases, demonstrating an inverse relationship. Since oil prices fluctuate daily, so does the value of the USD. Proponents of this system argue that markets tend to correct themselves. Most advanced economies, often referred to as "First World countries," rely on floating exchange rates with minimal government interference.

Speculation

Currencies are valuable assets for every nation. If individuals believe the value of a foreign currency will increase, they may hold onto it in hopes of profiting from the rise. For example, if Indians expect the value of the rupee to rise, they may be less concerned with the British pound’s value. This behavior can impact exchange rates as foreign currency demand shifts.

Also Check: Types of Markets

Exchange Rate and Interest Rates

The difference in interest rates between countries also plays a significant role in determining exchange rates. Banks, multinational corporations, and wealthy individuals often move large sums of money across borders to secure higher interest rates, influencing currency values.

Exchange Rates in the Long Run

Purchasing Power Parity (PPP) is a theory used to predict long-term exchange rates. According to PPP, if there are no barriers like taxes or import quotas, exchange rates should adjust to ensure that the same goods have the same price globally. For example, a product should cost the same in rupees in India, yen in Japan, or dollars in the US, aside from transportation costs.

Pegged Float Exchange Rate

This system combines aspects of both fixed and floating exchange rates, allowing governments and central banks to intervene in foreign exchange markets when necessary, while market forces determine the rate most of the time. There are three types:
  • Crawling Bands: The central bank permits the currency to fluctuate within a predefined range. If the value moves outside this range, authorities intervene to stabilize it. Economic and monetary policies typically determine these ranges.
  • Crawling Pegs: In this system, the central bank allows the currency to increase or decrease in value gradually. While the currency is generally allowed to float, intervention occurs when rapid fluctuations occur. Countries like Argentina, Vietnam, and Costa Rica have used this system.
  • Horizontally Pegged Bands: Similar to crawling bands, but with more flexibility. Here, currencies are allowed to fluctuate more freely, as long as they do not exceed a specific percentage, usually 1%, of their gross value.
Unlock your potential with PW CA Courses ! Our expert guidance will help you master exchange rates and more. Enroll now to ace your CA exams and build a successful career.
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Exchange Rate Determination FAQs

What are the main methods to determine exchange rates?

The main methods are fixed exchange rate, managed floating exchange rate, and flexible exchange rate.

How does a flexible exchange rate work?

A flexible exchange rate, or floating rate, is determined by market forces based on supply and demand.

What is a floating exchange rate?

A floating exchange rate is one that fluctuates according to market conditions, such as supply and demand, without government intervention.

What role does speculation play in exchange rates?

Speculation involves buying or holding foreign currencies in anticipation of future value changes, which can influence exchange rates.

How does Purchasing Power Parity (PPP) relate to exchange rates?

PPP theory suggests that exchange rates should adjust so that the same goods cost the same amount in different countries, considering transport costs.
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