Exchange rate policy

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Intros
Lessons
  1. 3 types of Exchange Rate Policies
    • Flexible Exchange Rate
    • Fixed Exchange Rate
    • Crawling Peg
  2. Flexible Exchange Rate
    • Exchange rate from demand and supply
    • No direct intervention by central bank
    • Central Bank can indirectly intervene
    • Central Bank can indirectly intervene
  3. Crawling Peg
    • Similar to fixed exchange rate
    • Gradual appreciation or depreciation
    • Minimize economic dislocation
Topic Notes
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Introduction to Exchange Rate Policy

Exchange rate policy plays a crucial role in shaping a country's economic landscape. It refers to the approach governments and central banks take in managing their currency's value relative to other currencies. This policy significantly impacts international trade, investment flows, and overall economic stability. The accompanying introduction video provides valuable insights into the three main types of exchange rate policies: flexible exchange rate, fixed exchange rate, and crawling pegs. A flexible exchange rate allows the currency's value to fluctuate based on market forces, while a fixed exchange rate maintains a constant value against another currency or basket of currencies. Crawling pegs represent a middle ground, allowing for gradual, controlled adjustments. Understanding these policies is essential for policymakers, businesses, and investors alike, as they influence everything from import/export competitiveness to inflation rates and foreign investment attractiveness. The video serves as an excellent starting point for grasping the complexities and implications of exchange rate policies in today's interconnected global economy.

Flexible Exchange Rate

A flexible exchange rate, also known as a floating exchange rate, is a system where the value of a currency is determined by the forces of supply and demand in the foreign exchange market. Unlike fixed exchange rates, which are set by governments or central banks, flexible exchange rates fluctuate freely based on market conditions.

In a flexible exchange rate system, the price of one currency in terms of another is established through the interaction of buyers and sellers in the foreign exchange market. This market is where currencies are traded, and it operates 24 hours a day, five days a week, across major financial centers worldwide.

Graph showing supply and demand curves intersecting to determine exchange rate

The graph above illustrates how the exchange rate is determined in a flexible system. The vertical axis represents the exchange rate, while the horizontal axis shows the quantity of currency. The downward-sloping demand curve (D) indicates that as the price of a currency increases, the quantity demanded decreases. Conversely, the upward-sloping supply curve (S) shows that as the price rises, the quantity supplied increases. The point where these curves intersect determines the equilibrium exchange rate.

While governments do not directly set the exchange rate in a flexible system, they can indirectly influence it through various monetary policies. One of the most significant tools at their disposal is the manipulation of interest rates. The central bank, acting on behalf of the government, can adjust interest rates to indirectly affect the exchange rate.

When a country increases its interest rates, it typically leads to an appreciation of its currency. This occurs because higher interest rates make the country's financial assets more attractive to foreign investors, increasing demand for the currency. Conversely, lowering interest rates can lead to a depreciation of the currency as it becomes less attractive to investors.

Graph showing the effect of interest rate changes on exchange rate

The graph above demonstrates how an increase in interest rates shifts the demand curve to the right (D to D'), resulting in a higher exchange rate (E to E'). Similarly, a decrease in interest rates would shift the demand curve to the left, leading to a lower exchange rate.

It's crucial to understand that while changes in interest rates can affect exchange rates, this is not the primary purpose of interest rate adjustments. The central bank's main objective in manipulating interest rates is to manage inflation or combat deflation within the domestic economy.

When inflation is high, central banks may increase interest rates to cool down the economy by making borrowing more expensive. This can lead to a stronger currency as a side effect. Conversely, during periods of low inflation or deflation, central banks might lower interest rates to stimulate economic activity, which can result in a weaker currency.

The flexible exchange rate system offers several advantages. It allows for automatic adjustment to economic shocks and changes in international competitiveness. It also provides monetary policy independence, allowing countries to focus on domestic economic objectives without being constrained by the need to maintain a fixed exchange rate.

However, flexible exchange rates also come with challenges. They can introduce uncertainty for businesses engaged in international trade and may lead to short-term volatility in currency markets. Despite these drawbacks, many economists argue that the benefits of flexible exchange rates outweigh the costs for most economies in the long run.

In conclusion, the flexible exchange rate system is a fundamental concept in international finance. It allows currencies to find their value based on market forces, with governments and central banks playing an indirect role through monetary policy. Understanding how flexible exchange rates work is crucial for anyone involved in international business, finance, or economics, as these rates significantly impact global trade, investment flows, and economic stability.

Fixed Exchange Rate

A fixed exchange rate system is a monetary policy approach where a country's government or central bank sets a specific value for its currency in relation to another currency, typically a major global currency like the US dollar or euro. This system aims to provide stability and predictability in international trade and investment by maintaining a constant exchange rate.

In a fixed exchange rate system, the government actively intervenes in the foreign exchange market to maintain the predetermined rate. This intervention involves buying or selling its own currency against the foreign currency to which it is pegged. The central bank must have sufficient foreign currency reserves to support these interventions and defend the fixed rate.

Some countries implement a variation of the fixed exchange rate system known as a target zone or band. In this approach, the exchange rate is allowed to fluctuate within a predetermined range around the fixed rate. This provides some flexibility while still maintaining overall stability. If the exchange rate approaches the edges of the band, the central bank intervenes to keep it within the specified limits.

To maintain a fixed exchange rate, central banks employ various methods. The primary tool is direct intervention in the foreign exchange market. When the domestic currency weakens, the central bank sells foreign currency reserves and buys its own currency to increase demand and support its value. Conversely, if the domestic currency strengthens beyond the desired rate, the bank sells its own currency and buys foreign currency to increase supply and lower its value.

Other methods include adjusting interest rates to influence capital flows and implementing capital controls to restrict the movement of currency in and out of the country. These measures help manage the supply and demand for the domestic currency in the foreign exchange market.

The fixed exchange rate system offers several advantages. It provides stability and predictability in international trade and investment, reducing exchange rate risk for businesses and investors. This can encourage increased trade and foreign investment. Fixed rates can also help control inflation by anchoring prices to a stable currency and imposing discipline on monetary policy.

However, the system also has significant disadvantages. It limits a country's ability to use monetary policy to address domestic economic issues, as the focus must remain on maintaining the fixed rate. This can lead to conflicts between internal and external economic objectives. Fixed rates can also make a country vulnerable to speculative attacks if markets perceive the rate as unsustainable, potentially leading to currency crises.

Moreover, if a country's economic fundamentals diverge significantly from those of the currency to which it is pegged, maintaining the fixed rate can become increasingly difficult and costly. This may result in the need for painful economic adjustments or, ultimately, the abandonment of the fixed rate system.

The impact on economic stability can be mixed. While fixed rates provide short-term stability in exchange rates, they can lead to longer-term imbalances if not properly managed. Countries may accumulate large trade surpluses or deficits, and the inability to adjust exchange rates can delay necessary economic adjustments.

In conclusion, the fixed exchange rate system offers a trade-off between stability and flexibility in international economic relations. While it can provide certainty and encourage international trade and investment, it also imposes constraints on monetary policy and can lead to economic imbalances if not carefully managed. Countries must weigh these factors carefully when deciding whether to adopt or maintain a fixed exchange rate system.

Crawling Peg Exchange Rate

The crawling peg exchange rate system represents a hybrid approach between fixed and flexible exchange rates, offering a unique solution for countries seeking to manage their currency's value. This system allows for gradual depreciation or appreciation of the exchange rate, providing a more controlled and predictable environment for economic agents.

In a crawling peg system, the central bank announces small, regular adjustments to the exchange rate, typically on a daily or weekly basis. These adjustments are usually made in response to various economic factors, such as inflation differentials between countries or changes in trade balances. The key feature of this system is its gradual nature, which distinguishes it from both fixed and freely floating exchange rates.

To illustrate how a crawling peg works, let's consider an example. Imagine a country that initially sets its exchange rate at 10 units of domestic currency to 1 unit of a foreign currency. In a fixed exchange rate system, this rate would remain constant. However, under a crawling peg, the central bank might announce a depreciation of 0.1% per week. This means that after one week, the exchange rate would be 10.01 to 1, after two weeks 10.02 to 1, and so on. This gradual adjustment allows the exchange rate to reflect changing economic conditions without sudden, disruptive shifts.

One of the primary advantages of a crawling peg is that it allows time for economic agents to react to changes. Businesses, investors, and consumers can anticipate and plan for the gradual shifts in currency value, reducing economic shocks that often accompany sudden exchange rate movements. This predictability can be particularly beneficial for international trade and investment decisions.

The crawling peg system is also an effective tool for managing market uncertainties. By providing a clear path for exchange rate adjustments, it can help prevent speculative attacks on the currency that often occur in fixed exchange rate regimes. This stability can boost confidence in the economy and attract foreign investment.

Inflation management is another key benefit of the crawling peg system. In countries experiencing higher inflation rates than their trading partners, a gradual depreciation can help maintain export competitiveness. By adjusting the exchange rate to reflect inflation differentials, the crawling peg can prevent the real exchange rate from becoming overvalued, which could harm exports and economic growth.

Furthermore, the crawling peg can be an effective tool for managing economic dislocations. During periods of economic transition or structural changes, a gradual adjustment of the exchange rate can help cushion the impact on various sectors of the economy. This can be particularly important for countries undergoing significant economic reforms or facing external economic shocks.

However, it's important to note that while a crawling peg offers many advantages, it also requires careful management. The central bank must have sufficient foreign exchange reserves to defend the announced rate and must be committed to maintaining the crawl. Additionally, if the crawl is too slow relative to market expectations or economic fundamentals, it can still lead to speculative pressures.

In conclusion, the crawling peg exchange rate system offers a middle ground between the rigidity of fixed exchange rates and the volatility of floating rates. By allowing for gradual depreciation or appreciation, it provides a mechanism for countries to adapt their exchange rates to changing economic conditions while minimizing disruptions. This system can be particularly useful for managing market uncertainties, inflation, and economic dislocations, making it an attractive option for many developing and transitional economies seeking to balance stability with flexibility in their exchange rate policies.

Comparison of Exchange Rate Policies

Exchange rate policies play a crucial role in shaping a country's economic landscape. The three main types of exchange rate policies - flexible, fixed, and crawling peg - each have distinct characteristics and implications for monetary independence, economic stability, and the ability to respond to external shocks.

Flexible exchange rate policies, also known as floating exchange rates, allow currency values to fluctuate freely based on market forces. This system offers the highest degree of monetary independence, enabling central banks to focus on domestic economic objectives. Countries like the United States, Japan, and the United Kingdom adopt flexible exchange rates, which provide them with greater autonomy in implementing monetary policies. The main advantage of this system is its ability to absorb external shocks automatically through currency adjustments. However, it can lead to increased volatility and uncertainty in international trade and investment.

On the other hand, fixed exchange rate policies maintain a constant value of the domestic currency against a foreign currency or a basket of currencies. This system provides stability and predictability in international transactions, which can boost trade and investment. Countries like Hong Kong and several Gulf states have successfully implemented fixed exchange rates. The primary disadvantage is the loss of monetary independence, as the central bank must prioritize maintaining the fixed rate over other economic objectives. Fixed exchange rates can also be vulnerable to speculative attacks and may require significant foreign exchange reserves to defend the peg.

The crawling peg system represents a middle ground between flexible and fixed exchange rates. In this policy, the exchange rate is adjusted periodically at a predetermined rate or in response to specific economic indicators. This approach aims to combine the stability of fixed rates with some flexibility to adapt to changing economic conditions. Countries like China and Singapore have utilized variations of the crawling peg system. The advantage of this policy is that it allows for gradual adjustments to prevent large, sudden changes in the exchange rate. However, it still limits monetary independence to some extent and may not be as effective in absorbing major external shocks compared to a fully flexible system.

When analyzing the effectiveness of these policies in different economic scenarios, it's important to consider factors such as a country's economic size, trade dependencies, and financial market development. For instance, small, open economies with significant trade exposure may benefit from the stability offered by fixed or crawling peg systems. Conversely, large, diversified economies might prefer the flexibility and shock-absorption capabilities of floating exchange rates.

The impact of these policies on economic stability varies. Flexible exchange rates can lead to short-term volatility but offer long-term stability by allowing automatic adjustments to economic imbalances. Fixed exchange rates provide short-term stability but can lead to significant economic disruptions if the peg becomes unsustainable. The crawling peg attempts to balance these extremes, offering moderate stability with some adaptability.

In terms of responding to external shocks, flexible exchange rates are generally more effective. For example, during the 2008 global financial crisis, countries with flexible exchange rates like Australia were able to adjust more quickly than those with fixed rates. However, fixed exchange rates can provide a stabilizing anchor during periods of high inflation or economic uncertainty, as demonstrated by Bulgaria's currency board arrangement.

The choice of exchange rate policy also affects a country's ability to conduct independent monetary policy. Flexible exchange rates offer the greatest monetary independence, allowing central banks to set interest rates based on domestic economic conditions. Fixed exchange rates severely limit this independence, as monetary policy must be aligned with maintaining the peg. The crawling peg offers some degree of monetary policy flexibility, but still constrains the central bank's actions.

In conclusion, each exchange rate policy has its own set of advantages and disadvantages, and the optimal choice depends on a country's specific economic circumstances and objectives. While flexible exchange rates offer the greatest monetary independence and shock absorption capabilities, fixed and crawling peg systems can provide stability and predictability that may be beneficial for certain economies. As global economic conditions continue to evolve, countries may need to reassess and adapt their exchange rate policies to ensure they remain effective in promoting economic stability and growth.

Impact of Exchange Rate Policies on International Trade

Exchange rate policies play a crucial role in shaping international trade dynamics, influencing exports, imports, trade balances, foreign investment, and cross-border business activities. Different exchange rate regimes can have profound implications for a country's economic competitiveness and its position in the global marketplace.

Fixed exchange rate policies, where a country's currency is pegged to another currency or a basket of currencies, can provide stability and predictability for international trade. This stability can encourage foreign investment and facilitate long-term business planning. For example, China's long-standing policy of maintaining a relatively stable exchange rate against the US dollar has been credited with boosting its export competitiveness and attracting foreign direct investment. However, fixed exchange rates can also lead to trade imbalances if they don't reflect the true economic fundamentals of a country.

On the other hand, floating exchange rate policies allow currency values to be determined by market forces. This can lead to more volatile exchange rates but also allows for automatic adjustments in trade balances. When a country's currency depreciates, its exports become more competitive in international markets, potentially boosting export volumes. Conversely, imports become more expensive, which can help reduce trade deficits. Japan's shift to a floating exchange rate in the 1970s led to significant appreciation of the yen, impacting its export-driven economy and forcing many companies to adapt their strategies.

Managed float policies, where central banks intervene to influence exchange rates within certain bounds, aim to strike a balance between stability and flexibility. This approach can help mitigate extreme currency fluctuations while still allowing for some market-driven adjustments. Switzerland's intervention in the foreign exchange market to prevent excessive appreciation of the Swiss franc during the Eurozone crisis is a notable example of a managed float policy in action.

Exchange rate stability can be particularly beneficial for cross-border business activities and foreign investment. Stable exchange rates reduce currency risk for international businesses, making it easier to plan and execute long-term strategies. This stability can attract foreign direct investment, as investors have more confidence in the predictability of returns when converted back to their home currency. The European Union's adoption of the euro eliminated exchange rate risks within the Eurozone, significantly boosting intra-EU trade and investment.

However, exchange rate volatility can also present opportunities for some businesses, particularly in the financial sector. Currency traders and multinational corporations with sophisticated treasury operations can profit from exchange rate fluctuations. Additionally, some argue that a degree of exchange rate flexibility is necessary to allow economies to adjust to external shocks and maintain competitiveness.

Changes in exchange rate policies can have dramatic effects on trade relationships between countries. The Plaza Accord of 1985, which led to a significant depreciation of the US dollar against the Japanese yen and German Deutsche Mark, aimed to address trade imbalances but also contributed to Japan's economic bubble in the late 1980s. More recently, the Brexit vote in 2016 led to a sharp depreciation of the British pound, impacting UK-EU trade dynamics and the competitiveness of British exports.

In conclusion, exchange rate policies are powerful tools that can significantly influence international trade patterns. While fixed exchange rates can provide stability and boost export competitiveness in the short term, they may lead to trade imbalances and reduced economic flexibility. Floating exchange rates allow for market-driven adjustments but can introduce volatility that affects cross-border business and investment. Managed float policies attempt to balance these concerns, but their effectiveness depends on the credibility and resources of the implementing central bank. As global economic conditions evolve, countries must carefully consider their exchange rate policies to optimize their position in the international trade landscape.

Conclusion

Exchange rate policies play a crucial role in shaping a country's economic growth and international trade relationships. We've explored three main types: flexible exchange rates, fixed exchange rates, and crawling pegs. Flexible exchange rates allow market forces to determine currency values, offering economic autonomy but potentially leading to volatility. Fixed exchange rates provide stability and predictability, though they require significant foreign reserves and limit monetary policy flexibility. Crawling pegs offer a middle ground, allowing gradual adjustments to maintain competitiveness while providing some stability. Understanding these policies is essential for policymakers, businesses, and investors alike. They impact inflation, trade balances, foreign investment, and overall economic growth. The choice of exchange rate policy depends on a country's specific economic conditions, goals, and global economic context. As the global economy continues to evolve, staying informed about these policies becomes increasingly important for effective economic management and successful participation in international trade.

Exchange Rate Policy

3 types of Exchange Rate Policies

  • Flexible Exchange Rate
  • Fixed Exchange Rate
  • Crawling Peg

Step 1: Introduction to Exchange Rate Policies

Welcome to this section. Today, we will be discussing exchange rate policies. Exchange rates are crucial in the economy as they significantly impact economic activities. Due to their importance, there are specific policies designed to manage exchange rates effectively. In this guide, we will explore three main types of exchange rate policies: Flexible Exchange Rate, Fixed Exchange Rate, and Crawling Peg.

Step 2: Understanding Flexible Exchange Rate

The first type of exchange rate policy is the Flexible Exchange Rate. Under this system, the value of a currency is determined by the foreign exchange market through supply and demand. This means that the exchange rate can fluctuate freely and is not directly controlled by the government. The flexible exchange rate system allows for automatic adjustments in the balance of payments and can help absorb economic shocks. However, it can also lead to volatility and uncertainty in the currency value.

Step 3: Exploring Fixed Exchange Rate

The second type of exchange rate policy is the Fixed Exchange Rate. In this system, a country's currency value is tied or pegged to another major currency, such as the US dollar or gold. The government or central bank intervenes in the foreign exchange market to maintain the currency's value within a narrow band. This system provides stability and predictability in international trade and investment. However, it requires significant reserves of foreign currency and can limit a country's ability to respond to economic changes.

Step 4: Examining Crawling Peg

The third type of exchange rate policy is the Crawling Peg. This system is a hybrid between the flexible and fixed exchange rate systems. Under a crawling peg, the currency is adjusted periodically in small increments to reflect changes in market conditions. This allows for gradual adjustments in the exchange rate, providing a balance between stability and flexibility. The crawling peg system can help prevent large-scale economic disruptions while allowing for some degree of market-driven adjustments.

Step 5: Conclusion

In conclusion, exchange rate policies play a vital role in the economy by influencing trade, investment, and overall economic stability. The three main types of exchange rate policiesFlexible Exchange Rate, Fixed Exchange Rate, and Crawling Pegeach have their advantages and disadvantages. Understanding these policies can help policymakers and economists make informed decisions to promote economic growth and stability.

FAQs

  1. What are the main types of exchange rate policies?

    The three main types of exchange rate policies are flexible exchange rates, fixed exchange rates, and crawling pegs. Flexible exchange rates allow currency values to fluctuate based on market forces. Fixed exchange rates maintain a constant value against another currency or basket of currencies. Crawling pegs allow for gradual, controlled adjustments to the exchange rate over time.

  2. How does a flexible exchange rate system work?

    In a flexible exchange rate system, the value of a currency is determined by supply and demand in the foreign exchange market. Governments and central banks do not directly set the exchange rate but can influence it through monetary policies such as adjusting interest rates. This system allows for automatic adjustment to economic shocks and changes in international competitiveness.

  3. What are the advantages and disadvantages of a fixed exchange rate system?

    Advantages of a fixed exchange rate system include stability and predictability in international trade and investment, potential control over inflation, and reduced exchange rate risk. Disadvantages include limited monetary policy independence, vulnerability to speculative attacks, and the need for significant foreign currency reserves to maintain the fixed rate.

  4. How does a crawling peg exchange rate system differ from fixed and flexible systems?

    A crawling peg system is a hybrid approach that allows for small, regular adjustments to the exchange rate, typically announced by the central bank. This system aims to combine the stability of fixed rates with some flexibility to adapt to changing economic conditions. It provides more predictability than flexible rates while allowing gradual adjustments to prevent large, sudden changes in the exchange rate.

  5. How do exchange rate policies impact international trade?

    Exchange rate policies significantly influence international trade by affecting export competitiveness, import costs, trade balances, and foreign investment. Fixed rates can provide stability for trade but may lead to imbalances if not reflecting economic fundamentals. Flexible rates allow for automatic adjustments in trade balances but can introduce volatility. The choice of policy can impact a country's economic growth, inflation rates, and overall position in the global marketplace.

Prerequisite Topics

Understanding exchange rate policy requires a solid foundation in various economic concepts. While there are no specific prerequisite topics provided for this subject, it's crucial to recognize that a comprehensive grasp of fundamental economic principles is essential for mastering exchange rate policy. These underlying concepts form the backbone of international finance and monetary policy, enabling students to navigate the complexities of global currency markets and their impact on national economies.

Exchange rate policy is a multifaceted subject that intersects with numerous areas of economics and finance. To fully appreciate its intricacies, students should have a strong understanding of macroeconomics, international trade, and monetary theory. These foundational topics provide the context necessary to analyze how governments and central banks manage their currencies in relation to other nations' currencies.

A key aspect of exchange rate policy is its relationship to international trade. Students who are well-versed in trade theory and practice will be better equipped to understand how exchange rates influence exports, imports, and overall trade balances. This knowledge is crucial for comprehending the motivations behind various exchange rate policies and their potential consequences on a country's economic competitiveness.

Moreover, a solid grasp of monetary policy is indispensable when studying exchange rate policy. The two are closely intertwined, as decisions made by central banks regarding interest rates and money supply can have significant effects on a country's exchange rate. Familiarity with concepts such as inflation, interest rates, and monetary aggregates provides students with the tools to analyze how domestic monetary policies can influence and be influenced by exchange rate dynamics.

Financial markets also play a crucial role in exchange rate determination and policy implementation. Students with knowledge of how currency markets operate, including concepts like spot rates, forward rates, and currency derivatives, will have a distinct advantage in understanding the mechanisms through which exchange rate policies are executed and their impact on financial institutions and investors.

Additionally, an awareness of historical economic events and case studies can greatly enhance one's understanding of exchange rate policy. Examining past currency crises, successful policy interventions, and the evolution of international monetary systems provides valuable context for current policy debates and decisions.

While specific prerequisite topics may not be listed, students approaching the study of exchange rate policy should strive to build a strong foundation in these related areas of economics and finance. By doing so, they will be better prepared to analyze complex policy decisions, understand their rationale, and predict their potential outcomes in the global economic landscape.


3 Types of Exchange Rate Policies

Since the exchange rate contributes massively to the economy, both governments and central banks must have a policy for the exchange rate.

The three policies that we will be looking at are:
  1. Flexible exchange rate
  2. Fixed exchange rate
  3. Crawling peg


Flexible Exchange Rate

Flexible Exchange Rate: the exchange rate determined by the demand and supply in the foreign exchange market and has no direct intervention by the government or central bank.

However, the central bank can indirectly intervene by doing one of the two examples:
  1. Increase interest rate \, \, Demand for US dollars \, \uparrow \, \, Supply for US dollars \, \downarrow \, \, exchange rate \, \uparrow .
  2. Decrease interest rate \, \, Demand for US dollars \, \downarrow \, \, Supply for US dollars \, \uparrow \, \, exchange rate \, \downarrow .

Though the central bank can change the interest rate to change exchange rate, that is not their purpose in a flexible exchange rate regime. When they change their interest rate, it is mainly due to changing a monetary policy objective.


Fixed Exchange Rate

Fixed Exchange Rate: an exchange rate determined by the government or central bank and can be attained by blocking the forces of demand and supply in the foreign exchange market.

The fixed exchange rate is what the central bank wants.

Note: In order to attain a fixed exchange rate, there must be intervention by the government or central bank.

To keep a fixed exchange rate, the central bank/government must do the following:
  1. If exchange rate rises above the target value, then they sell US dollars.
  2. If exchange rate falls below the target value, then they buy US dollars.


Note: The Fed has no limit to how much US dollars they can sell, but they have a limit to how much US dollars they can buy.

This is because the Fed can create any quantity of US dollars it chooses but buying US dollars requires the Fed to sell foreign currencies which they have a limited amount of.

Suppose the targeted fixed exchange rate is 4 Yuan’s per US dollar for the central bank.

Exchange Rate Policy


There are four cases of the central bank keeping its fixed exchange rate.

Case 1: The demand for US dollars increases temporarily, so the demand for US dollars shifts from D0D_{0} to D1D_{1} . In this case, the Fed would sell 0.4 trillion US dollars to stop the exchange rate from increasing.

Exchange Rate Policy


This keeps the fixed exchange rate as 4.

Case 2: The demand for US dollars decreases temporarily, so the demand for US dollars shifts from D0D_{0} to D1D_{1} . In this case, the Fed would buy 0.4 trillion US dollars to stop the exchange rate from decreasing.

Exchange Rate Policy


This keeps the fixed exchange rate as 4.

Case 3: The demand for US dollars increases permanently, so the demand for US dollars shifts from D0D_{0} to D1D_{1} . In this case, the Fed would have to sell 0.4 trillion US dollars every day to stop the exchange rate from increasing.

Exchange Rate Policy


Selling US dollars every day means they must buy foreign currency every day. At some point, they must stop piling up foreign currency reserves, which means abandoning the fixed exchange rate.

Case 4: The demand for US dollars decreases permanently, so the demand for US dollars shifts from D0D_{0} to D1D_{1} . In this case, the Fed would have to buy 0.4 trillion US dollars every day to stop the exchange rate from decreasing.

Exchange Rate Policy


Buying US dollars every day means they must sell foreign currency every day. At some point, the Fed will run out of foreign currencies to sell, so they would have to abandon the fixed exchange rate.


Crawling Peg

Crawling Peg: an exchange rate regime like that of the fixed exchange rate, except it allows gradual depreciation or appreciation of an exchange rate.

The targeted exchange rate can change daily, weekly, monthly, or even at random time intervals.

The system is designed to “glide” in response to market uncertainties or inflation, and to minimize major economic dislocation.