Simple Analytics of the Government Expenditure Multiplier

This paper explains the key factors that determine the output multiplier of government purchases in New Keynesian models, through a series of simple examples that can be solved analytically. Sticky prices or wages allow for larger multipliers than in a neoclassical model though the size of the multi...

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Veröffentlicht in:American economic journal. Macroeconomics 2011-01, Vol.3 (1), p.1-35
1. Verfasser: Woodford, Michael
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description This paper explains the key factors that determine the output multiplier of government purchases in New Keynesian models, through a series of simple examples that can be solved analytically. Sticky prices or wages allow for larger multipliers than in a neoclassical model though the size of the multiplier depends crucially on the monetary policy response. A multiplier well in excess of one is possible when monetary policy is constrained by the zero lower bound, and in this case welfare increases if government purchases expand to partially fill the output gap that arises from the inability to lower interest rates.
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subjects Central banks
Economic models
Equilibrium
Expenditures
Fiscal stimulus
Government expenditures
Government purchases
Government spending
Households
Inflation rates
Interest rates
Keynesianism
Macroeconomics
Monetary policy
Output gaps
Studies
Tax collections
Wages & salaries
title Simple Analytics of the Government Expenditure Multiplier
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