6 Economics of International Trade
6 Economics of International Trade
6 Economics of International Trade
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a Define imports and exports and describe the need for and trends in
imports and exports;
d Describe why a country runs a current account deficit and describe the
effect of a current account deficit on the countrys currency;
INTRODUCTION 1
When you walk into a supermarket where you can buy Scottish salmon, Kenyan veg-
etables, Thai rice, South African wine, and Colombian coffee, you are experiencing
the benefits of international trade. Without international trade, consumers needs
may not be fulfilled because people would only have access to products and services
produced domestically. Certain products and services may be missingperhaps food,
vaccines, or insurance products.
International trade is the exchange of products, services, and capital between coun-
tries. The growth in international trade, from $296billion in 1950 to $18.2trillion in
2011,1 can be viewed as both a cause and consequence of globalisation, one of the
four key forces driving the investment industry discussed in the Investment Industry:
A Top-Down View chapter.
Today, the factors driving supply and demand, and thus prices, are global. An under-
standing of how international trade and foreign exchange rate fluctuations affect econ-
omies, companies, and investments is important. We discussed in the Microeconomics
chapter how companies and individuals make decisions to allocate scarce resources.
In the Macroeconomics chapter, we discussed the factors that affect economies, such
as economic growth, inflation, and unemployment. We now bring into the discussion
the international dimension of economics, which investment professionals must also
take into account before deciding which assets to invest in.
This chapter will give you a better understanding of how international trade and for-
eign exchange rate fluctuations affect both your daily life and the work of investment
professionals.
Countries have been trading with each other for centuries, and the primary mode
of international trade is imports and exports. Imports refer to products and services
that are produced outside a countrys borders and then brought into the country.
For example, many countries in the European Union import natural gas from Russia.
Exports refer to products and services that are produced within a countrys borders
and then transported to another country. For example, Japan exports consumer elec-
tronics to the rest of the world.
Imports and exports represent the flow of products and services in international
trade. They are important components of a countrys balance of payments, which is
discussed in Section 4.
A common reason for international trade is to gain access to resources for which there
is no or insufficient supply domestically. For example, Japanese manufacturers need
access to such resources as metals and minerals, machinery and equipment, and fuel
to produce the cars and consumer electronics that they then export to the rest of the
world. Imports are a way for Japanese manufacturers to gain access to those resources
for which there is no or insufficient supply domestically. Japanese manufacturers
may import metals and minerals from Australia, Canada, and China; machinery and
equipment from Germany; and fuel from the Middle East.
International trade creates additional demand for products and services that are
produced domestically. For example, if Japanese manufacturers could not sell cars
and consumer electronics abroad, they would have to limit their production to the
quantity that can be consumed in Japan, which is a relatively small market. This lower
production would translate into lower sales and profits for the Japanese manufacturers,
which would probably have a negative effect on the Japanese economyGDP may be
lower and unemployment higher.
International trade provides consumers with a greater choice of products and ser-
vices. Imports give consumers access to goods and services that may not be available
domestically. For example, consumers in the United Kingdom would not be able to
enjoy bananas or a cup of tea if importing these products was not possible. Imports
may also enable consumers to access products and services that better suit their needs.
Imports and Exports 123
Imported products and services may be less expensive and/or of better quality than
domestically produced ones. By increasing competition between suppliers of products
and services, international trade promotes greater efficiency, which helps keep prices
down. International trade also stimulates innovation, which generates better-quality
products and services.
Trade barriers are restrictions, typically imposed by governments, on the free exchange
of products and services. These restrictions can take different forms. Common trade
barriers include the following:
Tariffs: Taxes (duties) levied on imported products and services. They allow
governments not only to establish trade barriers, often to protect domestic
suppliers, but also to raise revenue.
International trade barriers have steadily been reduced since the passage of the General
Agreement on Tariffs and Trade (GATT) in 1947 and the creation of the World Trade
Organization (WTO) in 1995. The WTO, with more than 150 member nations, is
designed to help countries negotiate new trade agreements and ensure adherence
to existing trade agreements. The WTO also provides a dispute resolution process
between countries. In addition, international trade has been promoted by the creation
of regional trade agreements, such as the Association of Southeast Asian Nations
(ASEAN) Free Trade Area (AFTA), the North American Free Trade Agreement
(NAFTA), and the Southern Common Market (MERCOSUR).
124 Chapter 6 Economics of International Trade
Shoes Kettles
No Reason to Trade?
It may appear that there is no reason why Growland would want to trade with
Makeland because Growland is able to produce both shoes and kettles less
expensively than Makeland. Growland has what is called an absolute advantage
over Makeland. An absolute advantage is when a country is more efficient at
producing a product or a service than other countriesthat is, it needs less
resources to produce the product or service.
Balance of Payments 125
BALANCE OF PAYMENTS 4
The balance of payments tracks transactions between a country and the rest of the
world over a period of time, usually a year. According to the International Monetary
Fund (IMF), an international organisation whose mission includes facilitating inter-
national trade, transactions consist of those involving goods, services, and income;
those involving financial claims on, and liabilities to, the rest of the world; and those
(such as gifts) classified as transfers.3 The balance of payments shows the flow of
money in and out of the country as a result of exports and imports of products and
services. It also reflects financial transactions and financial transfers between resident
and non-resident economic entities. Economic entities include individuals, companies,
governments, and government agencies. Resident entities are based in the country
(domestic), whereas non-resident entities are based in other countries (foreign).
3 IMF, Chapter II, in Balance of Payments Manual, International Monetary Fund (2012):6 (www.imf.org/
external/pubs/ft/bopman/bopman.pdf, accessed 11 September2012).
126 Chapter 6 Economics of International Trade
The current account indicates how much the country consumes and invests
(outflows) compared with how much it receives (inflows). It is primarily driven
by the trade of products and services with the rest of the worldthat is, exports
and imports.
The capital and financial account records the ownership of assets. In particular,
it reflects investments by domestic entities in foreign entities and investments
by foreign entities in domestic entities. These investments can be acquisitions of
production facilities or purchases and sales of financial securities, such as debt
and equity securities.
In theory, the sum of the current account and the capital and financial account is equal
to zero. In other words, the balance of payments should sum to zero. Before explaining
why this is the case, we need to understand what drives each account.
Income
Current transfers
Balance of Payments 127
Current Account
Income
Salaries + Income on financial
investments
Current Transfers
Unilateral transfers, such as
gifts or workers remittance
The difference between exports and imports of products and services is called net
exports, also referred to as the balance of trade or trade balance.4 If the value of
exports is equal to the value of importsthat is, if net exports are zerothe countrys
trade is balanced. In reality, this is rarely the case. If the value of exports is higher
than the value of importsthat is, if net exports are positivethe country has a trade
surplus. Alternatively, if the value of exports is lower than the value of importsthat
is, if net exports are negativethe country has a trade deficit.
The income account reflects the flow of money in and out of the country from salaries
and from income on financial investments. For example, if a domestic company has
a debt or equity investment in a foreign company, any incomesuch as interest pay-
ments on debt or dividend payments on equityreceived by the domestic company
is included in income in the countrys current account. In this example, the interest
or dividend payments are reported as inflows because they represent money coming
into the country from other countries.
4 Balance of trade may be used by some to refer only to the difference between exports and imports of
goods. In this chapter, when we refer to balance of trade, we include both goods and services.
128 Chapter 6 Economics of International Trade
The current transfers account includes unilateral transfers, such as gifts or workers
remittance. Gifts of aid from one country are outflows for that country and inflows
for the receiving country. Money sent home by migrant workers is an outflow from
the country where they work and an inflow to the country to which the money is sent.
The sum of the goods and services account, the income account, and the current trans-
fers account gives the current account balance. A positive current account balance
is called a current account surplus, whereas a negative current account balance is
called a current account deficit. For most countries, the goods and services account is
larger than the sum of the income account and the current transfers account. In other
words, the trade balance tends to dominate the current account balance. So, countries
that have a trade surplus because they export more than they import tend to have a
current account surplus. In contrast, countries that have a trade deficit because they
import more than they export tend to have a current account deficit.
A current account surplus indicates that the country is saving. That is, the country has
more inflows than outflows, so it has the ability to lend to or invest in other countries.
As can be seen in Exhibit 2, Germany, China, Saudi Arabia, the Netherlands, and
Russia had current account surpluses in 2013. By contrast, a country that is running
Balance of Payments 129
a current account deficit spends more than it earns so it needs to borrow or receive
investments from other countries. As indicated in Exhibit2, the United States, the
United Kingdom, Brazil, India and Canada had current account deficits in 2013.
As the name suggests, the capital and financial account refers to the combination of
two accounts:
The capital account, which primarily reports capital transfers between domes-
tic entities and foreign entities, such as debt forgiveness or the transfer of assets
by migrants entering or leaving the country.
The financial account, which reflects the investments domestic entities make in
foreign entities and the investments foreign entities make in domestic entities.
Capital
Capital transfers between
domestic and foreign entities
Financial
Direct investments + Portfolio
investments + Other investments
+ Reserve account
Portfolio investments reflect the purchases and sales of securities, such as debt
and equity securities, between domestic entities and foreign entities.
Other investments are largely made up of loans and deposits between domestic
entities and foreign entities.
The reserve account shows the transactions made by the monetary authorities
of a country, typically the central bank.
In practice, however, the capital and financial account balance does not exactly offset
the current account balance because of measurement errors. All the items reported in
the balance of payments must be measured independently by using different sources of
data. For example, data are collected from customs authorities on exports and imports,
from surveys on tourist numbers and expenditures, and from financial institutions on
capital inflows and outflows. Some of the inputs are based on sampling techniques,
so the resulting figures are estimates.
Current account
Exports of goods +1,097.3
Imports of goods 909.1
Net exports of goods +188.2
Balance of Payments 131
Exhibit4 (Continued)
Exhibit4 shows that in 2012, Germany had a current account surplus of 185.4billion
and was thus a net saver. The current account surplus was primarily driven by a trade
surplus of 157.8billion, indicating that Germany exported more than it imported
during the year. As a consequence of its current account surplus, Germany is a net
lender to other countries through a combination of direct, portfolio, and other invest-
ments. In 2012, Germanys capital and financial account deficit was 234.9billion.
The difference of 49.5billion between the current account balance and the capital
and financial account balance labelled errors and omissions is the plug figure that
is needed because of measurement errors. The plug figure is often a large amount,
indicating how difficult it is to measure accurately the items reported in the balance
of payments.
4.4 Why Does a Country Run a Current Account Deficit and How
Does It Affect Its Currency?
We saw in Exhibit 2 that some countries, such as the United States, the United
Kingdom, Brazil, India, and Canada, run large current account deficits. Is running a
current account deficit a bad sign, and should all countries aim at maximising their
current account balance? The answer to both questions is, not necessarily. First, the
132 Chapter 6 Economics of International Trade
sum of the current account balances of all countries is, by definition, equal to zero.
In other words, an inflow for one country is an outflow for another country. So, it is
impossible for all countries to have a current account surplus.
Second, a current account deficit must be put in context before drawing conclusions. A
developing country may run a current account deficit because it needs to import many
products (such as machinery and equipment) and services (such as communication
services) to help its economy evolve. As the initial period of heavy investment ends
and the economy gets stronger, the developing country may experience a decrease in
imports and an increase in exports, progressively reducing or even eliminating the
current account deficit. This scenario can also apply to transition economies that are
moving from a socialist planned economy to a market economy. In such a scenario, the
current account deficit may only be temporary. Alternatively, a mature economy may
run a current account deficit because its consumption far exceeds its production and
its ability to export. Thus, when reviewing the economic outlook for a country running
a current account deficit, an investment professional must factor in the countrys stage
of economic development and understand what drives the current account balance.
There is a long-running debate about the risk for a country of running a persistent
current account deficit. As mentioned earlier, a current account deficit means that
the country spends more than it earns and makes up the difference by borrowing or
receiving investments from other countries. Some economists argue that as long as
foreign entities are willing to continue holding the assets and the currency of the coun-
try with a current account deficit, running a current account deficit does not matter.
But what if foreign entities become unwilling to hold the assets and the currency of
the country running a current account deficit?
Consider the example of the country running the largest current account deficit, the
United States. Because the United States has a large trade deficit with many countries,
those countries hold US dollars. These US dollars can be held as bank deposits in the
United States or they can be invested. For example, foreign companies may use their
US dollars to acquire US companies, or they may invest in debt and equity securities
issued by US companies. Other governments may also invest in bonds (debt secu-
rities) issued by the US governmentthese bonds are called US Treasury securities
or US Treasuries.
But if other countries decide that they want to reduce their exposure to the United
States, they may start selling US assets, which will have a negative effect on the price
of these assets. In addition, they may decide to convert their US dollars into other
currencies, which will cause a depreciation of the US dollar relative to other curren-
ciesthat is, the US dollar will get weaker and a unit of the US currency will buy
less units of foreign currencies. Put another way, foreign currencies will get stronger
relative to the US dollar, a situation referred to as an appreciation of foreign curren-
cies relative to the US dollar. To encourage entities in other countries to invest in the
United States, the Federal Reserve Board (or the Fed), which is the US central bank,
may increase interest rates. An increase in interest rates would increase the cost of
financing for individuals, companies, and the government in the United States. So,
the combination of lower asset prices, a weaker US dollar, and higher interest rates
would likely hurt the US economy, potentially leading to a lower GDP, maybe even a
recession, and higher unemployment.
Foreign Exchange Rate Systems 133
The exchange rates between world currencies, such as the US dollar (US$), euro,
British pound, and Japanese yen () are just like prices of products and services. As
discussed in the Microeconomics chapter, prices change continuously depending on
supply and demand. If a lot of people want to buy a particular currency, such as the
euro, demand for the euro will increase and the price of the euro will rise. It will take
more of the other currency to buy a euro. In this case, the euro is said to appreciate
(get stronger) relative to other currencies. Alternatively, if a lot of people want to sell
the euro, demand for the euro will decrease and the price of the euro will fall. It will
take less of the other currency to buy a euro. In this case, the euro is said to depreciate
(get weaker) relative to other currencies.
Fixed rate
Floating rate
At the Bretton Woods conference in 1944, the major nations of the Western world
agreed to an exchange rate system in which the value of the US dollar was defined as
$35 per ounce of gold. So, a dollar was equivalent to one thirty-fifth of an ounce of
gold. All other currencies were defined or pegged in terms of the US dollar. Such
a system of exchange rates, which does not allow for fluctuations of currencies, is
known as a fixed exchange rate system or regime.
The advantage of a fixed exchange rate system is that it eliminates currency risk (or
foreign exchange risk), which is the risk associated with the fluctuation of exchange
rates. In a fixed-rate regime, importers and exporters know with greater certainty
the amount that they will pay or receive for the products and services they trade.
A disadvantage is that, as the competitiveness of economies changes over time, an
economy that becomes uncompetitive will see its current account balance worsen
because its currency becomes overvalued; its exports are too expensive from the
buyers perspective and its imports are too cheap from the sellers perspective. Under
134 Chapter 6 Economics of International Trade
a fixed exchange rate system, the only solution to this problem is for the country to
formally devalue its currency. Devaluation is the decision made by a countrys central
bank to decrease the value of the domestic currency relative to other currencies, an
action that many governments are reluctant to take.
To overcome the disadvantages of a fixed exchange rate system, the Bretton Woods
system was abandoned in 1973 and currency values were left to market forces. Thus,
since 1973, the major currencies, such as the US dollar, the euro, and the British pound,
have existed under a floating exchange rate system. In a pure floating exchange rate
system, a countrys central bank does not intervene and lets the market determine the
value of its currency. That is, the exchange rate between the domestic currency and
foreign currencies is only driven by supply and demand for each currency.
6 CURRENCY VALUES
This section identifies some major factors that affect the value of a currency and then
describes how to assess the relative value of currencies.
balance of payments,
level of inflation,
But, as discussed earlier, the self-adjusting mechanism does not always work in practice
because there are many factors other than international trade that influence exchange
rates. In addition, the natural correction that should lead to a reduction of the current
account deficit or surplus may not occur if the country belongs to a single currency
zone. For example, as of March2014, the euro is the common currency used by 18
European countries. Some countries, such as France, Belgium, and Italy, run large
current account deficits. The self-adjusting mechanism should lead to a depreciation
of the euro and reduce the current account deficits of these countries. But the euro is
also the currency used by Germany, the country running the largest current account
surplus, as shown in Exhibit2. Because 18 European countries use the same currency
but face very different economic environments, it makes it difficult, if not impossible,
for natural corrections to take place.
The following table shows the price of identical loaves of bread in Ireland and
in the United Kingdom in January and in June.
In January, the loaf of bread costs 1.20 in Ireland and 1.00 in the United
Kingdom, which implies an exchange rate of 1.20/1. If inflation in the United
Kingdom drives the price of the bread to 1.10 in June, but the price remains
1.20 in Ireland, then the purchasing power of the pound is lower in June than
136 Chapter 6 Economics of International Trade
it was in January. The exchange rate has moved from 1.20/1 to 1.20/1.10
or 1.09/1. A pound buys fewer euros, so the pound has depreciated relative
to the euro.
A country with a consistently high level of inflation will see the value of its currency
fall compared with a country that has a consistently low level of inflation.
As discussed in the Macroeconomics chapter, raising interest rates is a way for central
banks to control inflation. When a central bank raises interest rates, it may attract
more foreign investors to buy that currency, making the currency appreciate. The
appreciating currency makes imports less expensive and thus helps reduce inflation.
In addition, some countries that have balanced economic growth and higher relative
interest rates may see an increase in capital flows into their currency. This increase
occurs because many investors see higher interest rates as a way of achieving a higher
yield. But high interest rates can also reduce capital inflows if investors believe they
might lead to higher inflation and potential currency depreciation.
Government policies toward foreign investors also affect capital flows. Capital flows
usually increase when a country becomes more open to outside investors and liber-
alises foreign direct investments (FDIs)that is, direct investments made by foreign
investors and companies. For example, India is slowly allowing foreign ownership in
some of its domestic companies.
Exhibit5 summarises the major factors that affect the value of a currency.
Currency Values 137
There may be factors other than the ones listed in Exhibit5 that affect the value of a
currency, particularly if the currency has the status of reserve currency, which is the
case of the US dollar. A reserve currency is a currency that is held in significant quan-
tities by many governments and financial institutions as part of their foreign exchange
reserves. A reserve currency also tends to be the international pricing currency for
products and services traded on a global market and for commodities, such as oil and
gold. Because the US dollar is a reserve currency, the demand for US financial assets
and for US dollars is higher than it would be based on the countrys macroeconomic
outlook alone. Many economists believe that a decline in the demand for US finan-
cial assets and for US dollars may take place over many years as alternative reserve
currencies emerge. However, major foreign investors holding US financial assets and
substantial US dollar reservessuch as non-US central banksdo not want to cause
the value of their holdings to drop by embarking on large sales of these assets.
Example3 illustrates what happens if two identical products have different prices and
how prices and the exchange rate should adjust.
Assume that the exchange rate is currently 10 Mexican pesos for 1 US dollar
(M$10/$1). In the United States, a particular car sells for $30,000, whereas in
Mexico, the same car sells for M$270,000. Given the exchange rate, the car
138 Chapter 6 Economics of International Trade
costs $30,000 in the United States but the equivalent of $27,000 [M$270,000/
(M$10/$1)] in Mexico. In other words, it is cheaper for a US citizen to buy the
car in Mexico.
The fact that the same product sells for different prices presents an arbitrage
opportunitythat is, an opportunity to take advantage of the price difference
between the two markets. If consumers are able to do this without incurring
extra costs, then the following may happen:
2 Demand for the car sold in Mexico will increase, so the price Mexican
retailers charge will also increase.
3 By contrast, demand for the car sold in the United States will decrease
because consumers will go to Mexico to buy it. Thus, the price US retail-
ers charge for the car will decrease.
Eventually, these events should cause the prices in the two countries and the
exchange rate to change until the price difference vanishes. But the adjustment
process may take time.
In practice, buying the car in Mexico and bringing it to the United States may not be
as advantageous as it seems in theory. Anything that limits the free trade of goods will
limit the opportunities people have to take advantage of these arbitrage opportunities
and will influence currency valuations. The following are examples of three such limits:
Import and export restrictions. Restrictions, such as tariffs, quotas, and non-
tariff barriers discussed in Section 2.2, may make it difficult to buy products in
one market and bring them into another. If the United States imposes a tax on
cars imported from Mexico, then it may no longer be advantageous to buy the
car in Mexico instead of in the United States.
Purchasing power parity is the concept behind the Economists Big Mac index. On a
regular basis, the Economist records the price of McDonalds Big Mac hamburgers
in various countries around the world, and then it estimates what the exchange rates
should be to make the price of Big Macs the same in all the countries. This exchange
rate relies on purchasing power parity and assumes that an identical product, the Big
Mac, should have the same price everywhere. Otherwise, there would be an arbitrage
opportunity, such as the one described in Example3. The Economist constructs a table
Currency Values 139
of purchasing power parity exchange rates relative to the US dollar and then compares
them with the actual exchange rates to help identify whether currencies are under- or
overvalued relative to the US dollar.
Example4 illustrates how the Economist uses Big Macs to calculate purchasing power
parity exchange rates and how it determines which currencies are under- and over-
valued relative to the US dollar.
In January2014,
In January2014, a Big Mac cost US$4.62 in the United States and R23.50 in
South Africa, which implies a purchasing power parity exchange rate of R5.09/
US$1 (R23.50/US$4.62). The actual exchange rate in January2014 was R10.88/
US$1. This means that, based on purchasing power parity, the South African
rand is undervalued relative to the US dollar because it takes more South African
rand than purchasing power parity implies to buy a US dollar. Put another way, if
in January2014 a Big Mac cost R23.50 in South Africa and the actual exchange
rate was R10.88/US$1, the cost of a Big Mac in the United States should be
US$2.16. But the cost was US$4.62, which means that the South African rand
was undervalued by more than 50%; converting R23.50 to US dollars would only
give us US$2.16, which is not enough to buy a Big Mac in the United States.
Exhibit6 shows the currencies identified by the Economist as the most under- and
overvalued as of January2014.
140 Chapter 6 Economics of International Trade
India 66.8
Malaysia 51.8
United States
Britain .1
Switzerland 54.5
Venezuela 54.7
Norway 68.6
80 60 40 20 0 20 40 60 80
As of January2014, the most undervalued currencies were the Indian rupee, the South
African rand, and the Malaysian ringgit. The most overvalued currencies were the
Norwegian krone, the Venezuelan peso, and the Swiss franc. The British pound and
the New Zealand dollar were fairly valued compared with the US dollar.
The purchasing power parity exchange rates constructed using Big Macs are only loosely
representative of actual exchange rates because they are based on just one product. In
reality, purchasing power parity exchange rates should reflect a representative basket
of goods, but the Big Mac index serves as an easily understandable proxy.
Although purchasing power parity provides a way to explain relative currency valu-
ations, it has limitations. Two of these limitations are the difficulty of identifying a
basket of goods for comparison between countries and, as discussed earlier, the bar-
riers to international trade. These problems help explain why evidence suggests that
purchasing power parity does not hold very well in the short to medium term. But
in the long term, deviations of actual exchange rates from purchasing power parity
rates eventually correct themselves. In other words, purchasing power parity tends
to apply only in the long term.
Foreign Exchange Market 141
The bid exchange rate (or bid rate) is the exchange rate at which the bank or
currency dealer will buy the foreign currency.
The offer exchange rate (or offer rate), also called the ask exchange rate (or
ask rate), is the exchange rate at which the bank or dealer will sell the foreign
currency.
The difference between the bid and offer (ask) rates is known as the bidoffer spread
(bidask spread). The bidoffer spread is how the bank or currency dealer makes
moneythese intermediaries make a profit by buying a unit of currency more cheaply
than they sell it. The bidoffer spread will vary from bank to bank, from currency
to currency, and according to market conditions. The more a currency is traded, the
smaller the bidoffer spread.
Example5 shows how bid and offer rates are used to convert currencies. Remember
that you are not responsible for calculations. The presentation of formulas and illus-
trative calculations in Examples 5 and 6 may enhance your understanding.
142 Chapter 6 Economics of International Trade
A currency dealer in a US airport indicates the following bid and offer rates:
Bid Offer
Customer A, who has just arrived from the United Kingdom, wants to con-
vert 1,000 into US dollars. Customer B, who is leaving shortly for the United
Kingdom, wants to convert $1,600 into pounds.
From the US perspective, the British pound is the foreign currency and the
US dollar is the domestic currency. Customer A wants to sell the foreign currency
() and buy the domestic currency ($), which means that the currency dealer has
to buy the foreign currency (). Thus, the currency dealer applies the bid rate of
$1.50/1 and Customer A will receive $1,500 (1,000 ($1.50/1) for the 1,000.
Customer B wants to sell the domestic currency ($) and buy the foreign cur-
rency (), which means that the currency dealer has to sell the foreign currency
(). Thus, the currency dealer applies the offer rate of $1.60/1 and Customer B
will receive 1,000 [$1,600/($1.60/1)] for the $1,600.
The currency dealer made a profit of $100. It received 1,000 from Customer
A and passed the entire amount to Customer B. At the same time, the currency
dealer received $1,600 from Customer B but passed only $1,500 to Customer
A. So, the currency dealer is left with a profit of $100. This profit is the result
of the bidoffer spread.
If you are ever confused, just remember that the exchange rate works to the advantage
of the dealer; a dealer will pay as little as possible for any currency.
Let us return to the example of the French supermarket chain importing dairy prod-
ucts from the United Kingdom that has to pay its UK dairy producers 100,000. If
the French supermarket needs to make the payment now and convert euros into
pounds immediately, the exchange rate at which the conversion takes place is the spot
rate. Assuming a spot rate of 1.20/1, the French supermarket chain has to convert
120,000 to pay its invoice today, as shown earlier.
In the business world, however, many suppliers give credit to their customers. Assume
that the French supermarket chain has two months to pay its UK dairy producers.
Because the conversion of euros into pounds is not required now but in two months,
the French supermarket chain faces uncertainty about the exchange rate that will prevail
in two months and thus the amount it will have to give its bank or currency dealer to
get the 100,000 necessary to pay its UK dairy producers. In other words, the French
supermarket chain is exposed to currency risk because of the potential fluctuation
of the exchange rate between the euro and the pound during the next two months.
Example6 shows the effect of both an appreciation and a depreciation of the euro
relative to the pound on the amount the French supermarket chain would have to
pay its UK dairy producers.
A French supermarket chain imports dairy products from the United Kingdom
and has to pay its UK dairy producers 100,000.
The French supermarket may want to determine today how many euros it will have to
give its bank or currency dealer to get 100,000 in two months when it converts the
euros into pounds. By using the forward market today, the French supermarket chain
can lock in (fix) the exchange rate at which it will pay the invoice in two months. For
example, if the two-month forward rate for delivery in two months is 1.21/1, the
French supermarket chain can use the forward market to lock in this exchange rate
and determine today that it will need 121,000 to get the 100,000 necessary to pay
its UK dairy producers. In doing so, it eliminates the currency riskno matter how
much the euro fluctuates relative to the pound in the next two months, the French
supermarket chain has certainty about the amount it will pay its UK dairy suppliers.
Reducing or eliminating risk such as currency risk is often called hedging and is fur-
ther discussed in the Derivatives chapter.
Gaining certainty is important for companies because it enables them to ensure that
they can meet future cash outflows, such as operating expenses and interest payments.
Also, most companies prefer to focus on trading their products and services profitably,
rather than focus on the intricacies of buying and selling currencies.
SUMMARY
The next time you walk into a supermarket, you may look at the types and prices of
products, such as wine, coffee, and rice, in a new light. This chapter has hopefully
allowed you to see how imports and exports affect the types of products you find
in shops and the prices you pay for those products. International trade and foreign
exchange fluctuations are relevant to your everyday life and also to the work of
investment professionals who try to assess how they will affect the valuation of assets.
Countries trade with each other by importing products and services that are
produced in other countries and by exporting products and services produced
domestically.
International trade has benefited from the reduction in trade barriers, such
as tariffs, quotas, and non-tariff barriers, and from better transportation and
communications.
Countries tend to specialise in products and services for which they have a
comparative advantage, and then they trade to get access to products and ser-
vices that other countries can produce relatively more efficiently. The combina-
tion of specialisation and international trade ultimately benefits all countries,
leading to a better allocation of resources and increased wealth.
Summary 145
The balance of payments includes two accounts: the current account and the
capital and financial account.
The current account reports trades of imported and exported goods and
services as well as income and current transfers. A country where the value
of exports is higher than the value of imports has a trade surplus. By contrast,
a country where the value of exports is lower than the value of imports has a
trade deficit. Because the trade balance tends to dominate the current account
balance, countries that have a trade surplus tend to have a current account sur-
plus, whereas countries that have a trade deficit tend to have a current account
deficit.
In theory, the sum of the current account and the capital and financial account
is equal to zero. Thus, a country that has a current account surplus will have a
capital and financial account deficit of the same magnitudethe country is a
net saver and ends up being a net lender to the rest of the world. Alternatively,
a country that has a current account deficit will have a capital and financial
account surplus of the same magnitudethe country is a net borrower from the
rest of the world. However, in practice, the capital and financial account balance
does not exactly offset the current account balance because of measurement
errors reflected in the balance of payments in errors and omissions.
A country may run a current account deficit because it needs to import many
goods to help its economy evolve or because its consumption far exceeds its
production and its ability to export. A persistent current account deficit may
cause a depreciation of the countrys currency relative to other currencies.
An exchange rate is the rate at which one currency can be exchanged for
another. It can also be considered as the value of one countrys currency in
terms of another currency.
Three main types of exchange rate systems are fixed exchange rate, floating
exchange rate, and managed floating exchange rate systems. A fixed exchange
rate system does not allow for fluctuations of currencies. By contrast, a floating
exchange rate system is driven by supply and demand for each currency, allow-
ing exchange rates to adjust to correct imbalances, such as current account defi-
cits. In practice, pure floating exchange rate systems are rare. Managed floating
exchange rate systems, in which a central bank will intervene to stabilise its
countrys currency, are more common although intervention is uncommon.
Major factors that affect the value of a currency include the balance of pay-
ments, inflation, interest rates, government debt, and the political and eco-
nomic environment. A current account deficit, high inflation, low interest rates,
high government debt, political instability, and poor economic prospects tend
146 Chapter 6 Economics of International Trade
One of the simplest models for determining the relative strength of currencies
is purchasing power parity, which is based on the principle that a basket of
goods in two different countries should cost the same after taking into account
the exchange rate between the two countries currencies. Purchasing power par-
ity has limitations because of the difficulty of identifying a basket of goods for
comparison between countries and barriers to international trade.
Two exchange rates are quoted in the market: the bid rate and the offer rate.
The bid rate is the rate at which the dealer will buy the foreign currency, and
the offer rate is the rate at which the dealer will sell the foreign currency. The
bidoffer spread is how the dealer makes money.
Foreign exchange transactions may take place with immediate delivery via the
spot market or with future delivery via the forward market.
The forward market allows importers and exporters to eliminate currency risk
by fixing today the exchange rate at which they will trade in the future.