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September 2014 issue
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Hördahl, Tistani
Nakov, Thomas
Kelly, McQuinn
Aizenman, Glick
Arrondel, Savignac, Tracol
Cecchetti, Kohler
Bauer, Rudebusch
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When Capital Adequacy and Interest Rate Policy Are Substitutes (And When They Are Not)

by Stephen G. Cecchettia and Marion Kohlerb

Abstract

Prudential instruments are commonly seen as the tools that can be used to deliver the macroprudential policy goals of reducing the frequency and severity of financial crises. And interest rates are traditionally viewed as the means to deliver the macroeconomic stabilization goals of low, stable inflation and sustainable, stable growth. But, at the macroeconomic level, these two sets of policy tools have quite a bit in common. We use a simple macroeconomic model to study the extent to which capital adequacy requirements and interest rates might be substitutes in meeting the objective of stabilizing the economy. We find that in our model these two tools are substitutes for achieving conventional monetary policy objectives. In addition, we show that, in principle, they can both be used to meet financial stability objectives. This implies a need to coordinate the use of macroprudential and traditional monetary policy tools, a need that has clear implications for the construction of the policy framework designed to deliver the joint objectives of macroeconomic and financial stability.

JEL Codes: E5, G2.

 
Full article (PDF, 27 pages, 420 kb)


a Brandeis International Business School
b Reserve Bank of Australia