Slide 13-1Copyright © 2003 Pearson Education, Inc.  A Simple Rule The dollar rate of return on euro deposits is approximately the euro interest rate plus.

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Slide 13-1Copyright © 2003 Pearson Education, Inc.  A Simple Rule The dollar rate of return on euro deposits is approximately the euro interest rate plus the rate of depreciation of the dollar against the euro. –R € + (E e $/€ - E $/€ ) / E $/€ –The rate of depreciation of the dollar against the euro is the percentage increase in the dollar/euro exchange rate over a year: (E e $/€ - E $/€ ) / E $/€ where: R $ = interest rate on one-year dollar deposits R € = today’s interest rate on one-year euro deposits E $/€ = today’s dollar/euro exchange rate (number of dollars per euro) E e $/€ = dollar/euro exchange rate (number of dollars per euro) expected to prevail a year from today The Demand for Foreign Currency Assets

Slide 13-2Copyright © 2003 Pearson Education, Inc. Table 13-3: Comparing Dollar Rates of Return on Dollar and Euro Deposits The Demand for Foreign Currency Assets

Slide 13-3Copyright © 2003 Pearson Education, Inc.  Return, Risk, and Liquidity in the Foreign Exchange Market The demand for foreign currency assets depends not only on returns but on risk and liquidity. –There is no consensus among economists about the importance of risk in the foreign exchange market. –Assume that the real return on all deposits have equal riskness, regardless of the currency of denomination. –Most of the market participants that are influenced by liquidity factors are involved in international trade. –Payments connected with international trade make up a very small fraction of total foreign exchange transactions. Therefore, we ignore the risk and liquidity motives for holding foreign currencies. The Demand for Foreign Currency Assets

Slide 13-4Copyright © 2003 Pearson Education, Inc.  模型目的。  內生變數:決定模型兩軸。  行為法則:畫出模型曲線。  均衡:決定均衡之內生變數。  外生衝擊 判斷是否為外生變數改變? 判斷此外生變數之改變將影響哪些行為法則? 判斷此外生變數之改變造成行為法則何種影響? 學習經濟模型五步驟

Slide 13-5Copyright © 2003 Pearson Education, Inc. Equilibrium in the Foreign Exchange Market  Interest Parity: The Basic Equilibrium Condition The foreign exchange market is in equilibrium when deposits of all currencies offer the same expected rate of return. Interest parity condition –The expected returns on deposits of any two currencies are equal when measured in the same currency. –It implies that potential holders of foreign currency deposits view them all as equally desirable assets. –The expected rates of return are equal when: R $ = R € + (E e $/€ - E $/€ )/E $/€ (13-2)

Slide 13-6Copyright © 2003 Pearson Education, Inc.  How Changes in the Current Exchange Rate Affect Expected Returns Depreciation of a country’s currency today lowers the expected domestic currency return on foreign currency deposits. Appreciation of the domestic currency today raises the domestic currency return expected of foreign currency deposits. Equilibrium in the Foreign Exchange Market

Slide 13-7Copyright © 2003 Pearson Education, Inc. Table 13-4: Today’s Dollar/Euro Exchange Rate and the Expected Dollar Return on Euro Deposits When E e $/€ = $1.05 per Euro Equilibrium in the Foreign Exchange Market

Slide 13-8Copyright © 2003 Pearson Education, Inc. Figure 13-3: The Relation Between the Current Dollar/Euro Exchange Rate and the Expected Dollar Return on Euro Deposits Expected dollar return on euro deposits, R € + (E e $/€ - E $/€ )/(E $/€ ) Today’s dollar/euro exchange rate, E $/€ Equilibrium in the Foreign Exchange Market

Slide 13-9Copyright © 2003 Pearson Education, Inc.  模型目的。  內生變數:決定模型兩軸。  行為法則:畫出模型曲線。  均衡:決定均衡之內生變數。  外生衝擊 判斷是否為外生變數改變? 判斷此外生變數之改變將影響哪些行為法則? 判斷此外生變數之改變造成行為法則何種影響? 學習經濟模型五步驟  均衡

Slide 13-10Copyright © 2003 Pearson Education, Inc.  The Equilibrium Exchange Rate Exchange rates always adjust to maintain interest parity. Assume that the dollar interest rate R $, the euro interest rate R €, and the expected future dollar/euro exchange rate E e $/€, are all given. Equilibrium in the Foreign Exchange Market

Slide 13-11Copyright © 2003 Pearson Education, Inc. R$R$ Return on dollar deposits Figure 13-4: Determination of the Equilibrium Dollar/Euro Exchange Rate Rates of return (in dollar terms) Exchange rate, E $/€ E2$/€E2$/€ 2 1 E1$/€E1$/€ E3$/€E3$/€ 3 Expected return on euro deposits Equilibrium in the Foreign Exchange Market

Slide 13-12Copyright © 2003 Pearson Education, Inc.  模型目的。  內生變數:決定模型兩軸。  行為法則:畫出模型曲線。  均衡:決定均衡之內生變數。  外生衝擊 判斷是否為外生變數改變? 判斷此外生變數之改變將影響哪些行為法則? 判斷此外生變數之改變造成行為法則何種影響? 學習經濟模型五步驟  外生衝擊

Slide 13-13Copyright © 2003 Pearson Education, Inc. Dollar return R2$R2$ R1$R1$ Figure 13-5: Effect of a Rise in the Dollar Interest Rate Rates of return (in dollar terms) Exchange rate, E $/€ 2 E2$/€E2$/€ 1'1' 1 E1$/€E1$/€ Expected euro return Interest Rates, Expectations, and Equilibrium

Slide 13-14Copyright © 2003 Pearson Education, Inc. Dollar return R$R$ Figure 13-6: Effect of a Rise in the Euro Interest Rate Rates of return (in dollar terms) Exchange rate, E $/€ 1 E1$/€E1$/€ 2 E2$/€E2$/€ Rise in euro interest rate Expected euro return Interest Rates, Expectations, and Equilibrium

Slide 13-15Copyright © 2003 Pearson Education, Inc. Dollar return R$R$ Figure 13-7: Effect of a Rise in Expectation on the Current Exchange Rate Rates of return (in dollar terms) Exchange rate, E $/€ 1 E1$/€E1$/€ 2 E2$/€E2$/€ Rise in expectation on the current exchange rate Expected euro return Interest Rates, Expectations, and Equilibrium

Slide 13-16Copyright © 2003 Pearson Education, Inc.  The Effect of Changing Interest Rates on the Current Exchange Rate An increase in the interest rate paid on deposits of a currency causes that currency to appreciate against foreign currencies. –A rise in dollar interest rates causes the dollar to appreciate against the euro. –A rise in euro interest rates causes the dollar to depreciate against the euro. Interest Rates, Expectations, and Equilibrium

Slide 13-17Copyright © 2003 Pearson Education, Inc.  The Effect of Changing Expectations on the Current Exchange Rate A rise in the expected future exchange rate causes a rise in the current exchange rate. A fall in the expected future exchange rate causes a fall in the current exchange rate. Interest Rates, Expectations, and Equilibrium

Slide 13-18Copyright © 2003 Pearson Education, Inc. Summary  Exchange rates play a role in spending decisions because they enable us to translate different countries’ prices into comparable terms.  A depreciation (appreciation) of a country’s currency against foreign currencies makes its exports cheaper (more expensive) and its imports more expensive (cheaper).  Exchange rates are determined in the foreign exchange market.

Slide 13-19Copyright © 2003 Pearson Education, Inc. Summary  An important category of foreign exchange trading is forward trading.  The exchange rate is most appropriately thought of as being an asset price itself.  The returns on deposits traded in the foreign exchange market depend on interest rates and expected exchange rate changes.

Slide 13-20Copyright © 2003 Pearson Education, Inc. Summary  Equilibrium in the foreign exchange market requires interest parity. For given interest rates and a given expectation of the future exchange rate, the interest parity condition tells us the current equilibrium exchange rate.  A rise in dollar (euro) interest rates causes the dollar to appreciate (depreciate) against the euro.  Today’s exchange rate is altered by changes in its expected future level.