Presentation on theme: "CHAPTER 10 EXCHANGE RATES, BUSINESS"— Presentation transcript:
1 CHAPTER 10 EXCHANGE RATES, BUSINESS CYCLES, AND MACROECONOMIC POLICY IN THE OPEN ECONOMY
2 Part I Outline: Exchange Rates How Exchange Rates Are Determined The International Asset Market
3 Exchange Rates . 1. Nominal Exchange Rates ( ) is the number of units of foreign currency that can be purchased with one unit of the domestic currency.Flexible-exchange-rate system:exchange rates are determined by conditions of supply and demand in the foreign exchange market.Fixed-exchange-rate system:exchange rates were set by the government..
4 2. Real Exchange Rateis the number of foreign goods that can be obtained in exchange for one domestic good:= the price of foreign goods, measured in the foreign currency= the price of domestic goods, measured in the domestic currency
5 3. Appreciation and Depreciation Type of Exchange Rate SystemExchange rateincreases“stronger”decreases“weaker”Flexible exchange ratesAppreciationDepreciationFixedexchange ratesRevaluationDevaluation
6 4. Purchasing Power Parity “purchasing power parity” (PPP): (in the absence of transportation costs), the similar foreign and domestic goods should have the same price in terms of the same currency. Empirical evidence: PPP holds in the very long run, but not in the short run.
7 4. Purchasing Power Parity In the more general case: When is constant, “Relative purchasing power parity”: works well for high-inflation countries, but not low-inflation countries.
8 5. The Real Exchange Rate and Net Exports The real exchange rate is the price of domestic goods relative to foreign goods.It determines the demand for domestic goods both in home and foreign countries.real exchange rate net export
9 II. How Exchange Rate Are Determined Supply of dollars: (upward sloping)Why supply?(i) buy foreign goods and services(ii) buy foreign financial assetsDemand for dollars: (downward sloping)Why demand?(i) buy Canadian goods and services(ii) buy Canadian financial assets
10 Macroeconomic Determinants of the Exchange Rate and Net Export Effects of Changes in OutputDomestic incomenet exportexchange rate (depreciation)Foreign incomeexchange rate (appreciation)
11 Macroeconomic Determinants of the Exchange Rate and Net Export Effects of Changes in Real Interest RateDomestic real interest rateexchange rate (appreciation)net export (indirectly through )Foreign real interest rateexchange rate (depreciation)
12 III. The International Asset Market 1. Returns on Domestic and Foreign AssetsExample: A Canadian saver has $100 to invest either in Canadian bonds or US bonds. Canadian bonds pay interest ; US bonds pay interest . Assume the two assets have the same risk and liquidity. Which bond should she buy? (Assume and )
13 General steps to calculate the gross nominal rate of return on foreign asset: Step 1: Convert home currency to foreign currency.Step 2: Earn interest on foreign asset.Step 3: Convert foreign currency to home currency.Expected gross nominal rate of return on foreign asset =
14 2. Interest Rate ParityThe equilibrium condition in the international asset market: “nominal interest rate parity condition” In real term, “real interest rate parity condition”
15 Part II Outline: The IS-LM Model for an Open Economy Macro Policy in a Small Open Economy with Flexible Exchange RateFixed Exchange Rate
16 IV. The IS-LM Model for an Open Economy The LM curve and FE line are the same as in the closed economy; the IS curve will be modified.3 main points about the IS curve in the open economy:i). downward sloping;ii). Factors shift IS curve in the closed economy shift IS in the open economy.iii). Factors that change NX also shift IS.
17 1. The Open-Economy IS Curve Goods Market Equilibrium:Closed economy:Open economy:Equivalently:The curve: slopes upward.The curve: slopes downward.Goods market equilibrium is given by the intersection of curve and curve
18 Numerical example:Given the following, derive the open- economy IS curve:
19 2. Factors That Shift the IS Curve Factors that shift closed-economy IS curve up:shifts curve to the leftshifts open-economy IS curve upe.g.: expected future output, wealth, , ,and effective tax rate on capital
21 Factors that shift the curve: i). Foreign output,ii). Foreign real interest rate,iii). Demand for domestic goodsshifts open-economy IS curve up
22 V. Macro Policy under Flexible Exchange Rate 1. A Fiscal ExpansionIS curve first shifts to the right IS curve then shifts to the left Overall effects: i). Fiscal policy is ineffective. ii). exchange rate and “net export crowding out”
24 2. A Monetary Expansion Short-run effects: Long-run effects:. LM and IS both shifts right, , (holding fixed)Long-run effects:.LM and IS both shifts leftOverall effects: Money is neutrali). Real variables are unaffectedii). Nominal variables change proportionally
25 VI. Fixed Exchange Rates Fundamental value of the exchange ratethe value that would be determined by the supply and demand in the foreign exchange markets.Overvalued exchange rate:fixed value > the fundamental valueUndervalued exchange rate:fixed value < the fundamental value
28 i). Devaluation: change the official value to the fundamental value How to deal with a situation with overvalued exchange rate?i). Devaluation: change the official value to the fundamental valueii). Restrict international transactionsiii). Use official reserve assets to buy back its own currencySpeculative run: investors expect overvalued currency will soon devalue, so they sell assets in that currency.
30 2. Monetary Policy and the Fixed Exchange Rate fundamental value ofan overvalued exchange rateAn overvalued exchange rate is not sustainable, so the monetary expansion eventually must be reversed.The relationship of the money supply to the fundamental value of : slopes downward.
33 2. Fiscal Policy and the Fixed Exchange Rate Short-run effects:IS and LM both shifts right, , (holding fixed)Long-run effects:.LM and IS both shifts lefta) Fiscal expansion has no effect on .b) Real exchange rate is increased.c) Net export is crowding out.
34 VII. Choosing an Exchange Rate System Advantage of fixed exchange rates:i). Stable exchange rates promote trade.ii). Improve monetary policy “discipline”Disadvantage of fixed exchange rates:i). Unable to use monetary policy to deal with recession.ii). Lose monetary policy independence.iii). Vulnerable to speculative attacks.
35 – an alternative to fixed exchange rate Currency union– an alternative to fixed exchange rate– common monetary policy is controlled by a single institution.– 2 advantages over fixed exchange rates:i). With a single currency, trading cost iseven less.ii). Using the common currency,speculative attacks can be avoided.
36 2. Self-Correcting Adjustment Closed EconomySelf-correcting mechanism: price adjustment.When the intersection of IS and LM curves lies to the right of the FE line, price increases to shift LM curve up.When the Intersection lies to the left of the FE line, price decreases to shift LM curve down.
37 Small Open EconomySelf-correcting mechanism: price adjustment & exchange rate adjustmentUnder a flexible exchange rate system:Fiscal policy is ineffective, but many unexpected shocks that shift IS curve requires no stabilization policy response.Monetary policy is effective for stabilization purpose, but it has a magnified impact on output.
40 Small Open EconomyUnder a fixed exchange rate system:Fiscal policy accompanied by a monetary expansion/contraction is effective for stabilization purpose, but it has larger impact on output.Monetary policy is ineffective, but factors that shift LM curve has no impact on output.
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