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Macroprudential and Monetary Policy Rules in a Model with Collateral Constraints

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  • Piotr Żoch

Abstract

We compare the welfare and macroeconomic effects of monetary policy and macroprudential policy, in particular one targeting the loan-to-value (LTV) ratio. We develop a dynamic stochastic general equilibrium (DSGE) model with collateral constraints and two types of agents. In this set-up, we study seven potential policy rules responding to credit growth and fluctuations in the prices of collateral. We show that monetary policy responding to deviations in collateral prices from their steady-state value results in the highest level of social welfare. It is also useful in stabilising output and inflation. A macroprudential policy using the LTV ratio as the instrument is dominated in terms of output and inflation stability by interest rate rules. If interest rate rules are not available, the LTV ratio can be used to improve welfare, but the gains are small.

Suggested Citation

  • Piotr Żoch, 2020. "Macroprudential and Monetary Policy Rules in a Model with Collateral Constraints," Gospodarka Narodowa. The Polish Journal of Economics, Warsaw School of Economics, issue 2, pages 43-69.
    • Handle: RePEc:sgh:gosnar:y:2020:i:2:p:43-69
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    More about this item

    Keywords

    collateral constraint; financial friction; macroprudential policy;
    All these keywords.

    JEL classification:

    • E30 - Macroeconomics and Monetary Economics - - Prices, Business Fluctuations, and Cycles - - - General (includes Measurement and Data)
    • E32 - Macroeconomics and Monetary Economics - - Prices, Business Fluctuations, and Cycles - - - Business Fluctuations; Cycles
    • E44 - Macroeconomics and Monetary Economics - - Money and Interest Rates - - - Financial Markets and the Macroeconomy
    • E52 - Macroeconomics and Monetary Economics - - Monetary Policy, Central Banking, and the Supply of Money and Credit - - - Monetary Policy

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