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Title: Price Stability and Monetary Policy Effectiveness when Nominal Interest Rates are Bounded at Zero

Author(s): G�nter Coenen, Athanasios Orphanides and Volker Wieland

Publication Date: May 2003

Keyword(s): inflation targeting, liquidity trap, monetary policy rules and price stability

Programme Area(s): International Macroeconomics

Abstract: This Paper employs stochastic simulations of a small structural rational expectations model to investigate the consequences of the zero bound on nominal interest rates. We find that if the economy is subject to stochastic shocks similar in magnitude to those experienced in the US over the 1980s and 1990s, the consequences of the zero bound are negligible for target inflation rates as low as 2%. The effects of the constraint are, however, non-linear with respect to the inflation target and produce a quantitatively significant deterioration of the performance of the economy with targets between 0 and 1%. The variability of output increases significantly and that of inflation also rises somewhat. Also, we show that the asymmetry of the policy ineffectiveness induced by the zero bound generates a non-vertical long-run Phillips curve. Output falls increasingly short of potential with lower inflation targets.

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Bibliographic Reference

Coenen, G, Orphanides, A and Wieland, V. 2003. 'Price Stability and Monetary Policy Effectiveness when Nominal Interest Rates are Bounded at Zero'. London, Centre for Economic Policy Research. https://cepr.org/active/publications/discussion_papers/dp.php?dpno=3892