ECON 2000 Lecture Notes - Lecture 80: Fiscal Policy, Monetary Policy, Money Supply

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ECON 2000
Lecture 80
Fiscal policy
- Increase govt spending or cut taxes, shifts IS* curve to right and puts
upward pressure on market exchange rate
- Because central bank stands ready to trade foreign and domestic
currency at fixed rate, arbitrageurs quickly respond to rising exchange
rate by selling foreign currency to the central bank, leading to an
automatic monetary expansion
- Rise in money supply shifts LM* curve to right
- Fiscal expansion under fixed exchange rates raises aggregate
income
Monetary policy
- Increase money supply (e.g. buying bonds from public)
- Initial impact is to shift LM* curve to right, lowering exchange rate
- But because central bank is committed to trading foreign and
domestic currency at fixed exchange rate, arbitrageurs quickly
respond to falling exchange rate by selling domestic currency to
central bank causing money supply and LM* curve to return to their
initial positions
- Monetary policy as usually conducted is ineffectual under fixed
exchange rate
- By agreeing to fix exchange rate, the central bank gives up its control
over the money supply
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Document Summary

Increase govt spending or cut taxes, shifts is* curve to right and puts upward pressure on market exchange rate. Because central bank stands ready to trade foreign and domestic currency at fixed rate, arbitrageurs quickly respond to rising exchange rate by selling foreign currency to the central bank, leading to an automatic monetary expansion. Rise in money supply shifts lm* curve to right. Fiscal expansion under fixed exchange rates raises aggregate income. Increase money supply (e. g. buying bonds from public) Initial impact is to shift lm* curve to right, lowering exchange rate. Monetary policy as usually conducted is ineffectual under fixed exchange rate. By agreeing to fix exchange rate, the central bank gives up its control over the money supply. Country with fixed exchange rate can conduct a type of monetary policy: can decide to change level at which exchange rate is fixed. Reduction in official value of currency called devaluation and increase in its official value called revaluation.

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