Tag: U.S. dollar

Solved Problem: Is a Weak Yen Good or Bad for the Japanese Economy?

Supports: Macroeconomics, Chapter 18, Economics, Chapter 28, and Essentials of Economics, Chapter 19.

In a recent post, economics blogger Noah Smith discussed the effects on the Japanese economy of a “weaker yen”: “A weaker yen is making Japanese people feel suddenly poorer ….” But “let’s remember that a ‘weaker’ exchange rate isn’t always a bad thing.”  

  1. When the yen becomes weaker, does one yen exchange for more or fewer U.S. dollars?
  2. Why might a weaker yen make Japanese people feel poorer?
  3. Are there any ways that a weaker yen might help the Japanese economy? Briefly explain.
  4. Considering your answers to parts b. and c., can you determine whether a weak yen is good or bad for the Japanese economy? Briefly explain.

Solving the Problem

Step 1:  Review the chapter material. This problem is about the effect of changes in a country’s exchange rate on the country’s economy, so you may want to review Macroeconomics, Chapter 18, Section 18.2, “The Foreign Exchange Market and Exchange Rates,” (Economics, Chapter 28, Section 18.2, and Essentials of Economics, Chapter 19, Section 19.6.

Step 2: Answer part a. by explaining what a “weaker” yen means. A weaker yen will exchange for fewer U.S. dollars (or other currencies), or, equivalently, more yen will be required in exchange for a U.S. dollar. (This situation is illustrated in the figure at the top of this post, which shows the substantial weakening of yen against the dollar in the period since the end of the 2020 recession.)

Step 3: Answer part b. by explaining why a weaker yen might make people in Japan feel poorer. A weaker yen raises the yen price of imported goods. For example at an exchange rate of ¥100 = $1, a $1 Hershey candy bar imported from the United States will sell in Japan for ¥100. But if the yen becomes weaker and the exchange rate moves to ¥120 = $1, then the imported candy bar will have increased in price to ¥120. (Note that this discussion is simplified because a change in the exchange rate won’t necessarily be fully passed through to the prices of imported goods, particularly in the short run. But we would still expect that a weaker yen will result in higher yen prices of imports.)  A weaker yen will require people in Japan to pay more for imports, leaving them with less to spend on other goods. Because they will be able to consume less, people in Japan will feel poorer. (As we note in Section 18.3, many goods traded internally are priced in U.S. dollars—oil being an important example. Because Japan imports nearly all of its oil and more than half of its food, a decline in the value of the yen in exchange for the dollar will increase the yen price of key consumer goods.)

Step 4: Answer part c. by explaining how a weaker yen might help the Japanese economy. A weaker yen increases the yen price of Japanese imports but it also decreases the foreign currency price of Japanese exports. This effect would be the main way in which a weaker yen might help the Japanese economy but we can also note that Japanese businesses that compete with foreign imports will also be helped by the increase in import prices.

Step 5: Answer part d. by explaining that a weaker yen isn’t all bad or all good for the Japanese economy. As the answers to parts b. and c. indicate, a weaker yen creates both winners and losers in the Japanese economy. Japanese consumers lose as a result of a weaker yen but Japanese firms that export or that compete against foreign imports will be helped.  

Solved Problem: The Mexican “Super Peso”

A food market in Mexico. (Photo from mexperience.com)

Supports: Macroeconomics, Chapter 18, Economics, Chapter 28, and Essentials of Economics, Chapter 19.

In September 2023, an article in the Los Angeles Times discussed the effects on Mexico of the “’super-peso,’ as the Mexican currency has been dubbed since steadily gaining 18% on the dollar during the last 12 months.” The article focused on the effects of the rising value of the peso on people in Mexico who receive U.S. dollars from relatives and friends working in the United States. Many of the people who receive these payments rely on them to buy basic necessities, such as food and clothing. An article in the Wall Street Journal on the effects of the rising value of the peso noted that: “The peso’s strength has helped curtail inflation ….” 

  1. Briefly explain what the Los Angeles Times article means by the peso “gaining” on the U.S. dollar? Does the peso gaining on the dollar mean that someone exchanging dollars for pesos would receive more pesos or fewer pesos? 
  2. As a result of the rising value of the peso would people in Mexico receiving dollar payments from relatives in the United States be better off or worse off? Briefly explain. 
  3. Why would the increasing strength of the peso reduce the inflation rate in Mexico?
  4. The Los Angeles Times article also noted that: “The Bank of Mexico’s benchmark interest rate of 11.25% is more than double the U.S. Federal Reserve target …” Does this fact have anything to do with the increase in the value of the peso in exchange for the dollar? Briefly explain. 

Solving the Problem

Step 1:  Review the chapter material. This problem is about the effect of fluctuations in the exchange rate and the relationship between interest rates and exchange rates, so you may want to review Macroeconomics, Chapter 18, Section 8.2, “The Foreign Exchange Market and Exchange Rates,” or the corresponding sections in Economics, Chapter 28 or Essentials of Economics, Chapter 19.

Step 2: Answer part a. by explaining what it means for the peso to be “gaining” on the U.S. dollar. The peso gaining on the dollar means that someone can exchange fewer pesos to receive a dollar. Or, alternatively, someone exchanging dollars for pesos will receive fewer pesos. 

Step 3: Answer part b. by explaining why people in Mexico receiving dollar payments from relatives in the United States will be worse off because of the rising value of the peso. People living in Mexico needs pesos to buy food and clothing from Mexican stores. Because people will receive fewer pesos in exchange for the dollars they receive from relatives in the United States, these people will have been made worse off by the rising value of the peso. 

Step 4: Answer part c. by explaining why the increasing strength of the peso will reduce inflation in Mexico. A country’s inflation rate includes the prices of imported goods as well as the prices of domestically produced goods.  A stronger peso means that fewer pesos are needed to buy the same quantity of a foreign currency, which reduces the peso price of imports from that country. For example, a stronger peso reduces the number of pesos Mexican consumers pay to buy $10 worth of cucumbers imported from the United States. Falling prices of imported goods will reduce the inflation rate in Mexico. 

Step 5: Answer part d. by explaining why higher interest rates in Mexico relative to interest rates in the United States will increase the value of the peso in exchange for the U.S. dollar. If interest rates in Mexico rise relative to interest rates in the United States, Mexican financial assets, such as Mexican government bonds, will be more desirable, causing investors to increase their demand for the pesos they need to buy Mexican financial assets. The resulting shift to the right in the demand curve for pesos will cause the equilibrium exchange rate between the peso and the dollar to increase. 

Sources:  Patrick J. McDonnell, “Mexico’s Peso Is Soaring. That’s Bad News for People Who Rely on Dollars Sent from the U.S.,” Los Angeles Times, September 5, 2023; and Anthony Harrup, “Mexico’s Peso Surges to Strongest Level Since 2015,” Wall Street Journal, July 13, 2023.