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Housing sector and optimal macroprudential policy in an estimated DSGE model for Luxembourg

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  • Ibrahima Sangaré

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Abstract

This study investigates the optimal macroprudential policies for Luxembourg using an estimated closed-economy DSGE model. The model features a monopolistically competitive banking sector, a collateral constraint and an explicit differentiation between the flow and the stock of household mortgage debt. Based on a welfare-oriented approach and in a context of easy monetary policy environment, we first find that the non-joint optimal loan-to-value (LTV) and risk weighted capital requirement (RW) ratios for Luxembourg seem to be 90% and 30%, respectively, while the joint optimal ratios are found to be 100% and 10% respectively. Our results from the combination of instruments suggest that the policy scenario that provides better stabilization effects on mortgage credits isn’t necessarily the one that is welfare improving. In other words, we find a complementarity between LTV and RW in terms of welfare, while their optimal combination diminishes the stabilization effects on mortgage debt and house prices. However, the time-varying and endogenous rules for LTV and RW improve the social welfare and better stabilizes mortgage loans and house prices compared to their static exogenous ratios. We further find that the optimal interactions between LTV and RW ratios in our modelling framework exhibit a convex shape. It should be recalled that the results are conditional on the model’s specific assumptions.

Suggested Citation

  • Ibrahima Sangaré, 2019. "Housing sector and optimal macroprudential policy in an estimated DSGE model for Luxembourg," BCL working papers 129, Central Bank of Luxembourg.
  • Handle: RePEc:bcl:bclwop:bclwp129
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    References listed on IDEAS

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    1. Alpanda, Sami & Zubairy, Sarah, 2017. "Addressing household indebtedness: Monetary, fiscal or macroprudential policy?," European Economic Review, Elsevier, vol. 92(C), pages 47-73.
    2. Deák, Szabolcs & Fontagné, Lionel & Maffezzoli, Marco & Marcellino, Massimiliano, 2011. "LSM: A DSGE model for Luxembourg," Economic Modelling, Elsevier, vol. 28(6), pages 2862-2872.
    3. Nicolas Albacete & Pirmin Fessler & Peter Lindner, 2018. "One policy to rule them all? On the effectiveness of LTV, DTI and DSTI ratio limits as macroprudential policy tools," Financial Stability Report, Oesterreichische Nationalbank (Austrian Central Bank), issue 35, pages 67-83.
    4. Brzoza-Brzezina, Michał & Kolasa, Marcin & Makarski, Krzysztof, 2015. "Macroprudential policy and imbalances in the euro area," Journal of International Money and Finance, Elsevier, vol. 51(C), pages 137-154.
    5. Punzi, Maria Teresa & Rabitsch, Katrin, 2018. "Effectiveness of macroprudential policies under borrower heterogeneity," Journal of International Money and Finance, Elsevier, vol. 85(C), pages 251-261.
    6. Anna Grodecka, 2020. "On the Effectiveness of Loan‐to‐Value Regulation in a Multiconstraint Framework," Journal of Money, Credit and Banking, Blackwell Publishing, vol. 52(5), pages 1231-1270, August.
    7. Rubio, Margarita & Carrasco-Gallego, José A., 2014. "Macroprudential and monetary policies: Implications for financial stability and welfare," Journal of Banking & Finance, Elsevier, vol. 49(C), pages 326-336.
    8. Brzoza-Brzezina, Michał & Kolasa, Marcin & Makarski, Krzysztof, 2017. "Monetary and macroprudential policy with foreign currency loans," Journal of Macroeconomics, Elsevier, vol. 54(PB), pages 352-372.
    9. Marchiori, Luca & Pierrard, Olivier, 2017. "How does global demand for financial services promote domestic growth in Luxembourg? A dynamic general equilibrium analysis," Economic Modelling, Elsevier, vol. 62(C), pages 103-123.
    10. Kannan Prakash & Rabanal Pau & Scott Alasdair M., 2012. "Monetary and Macroprudential Policy Rules in a Model with House Price Booms," The B.E. Journal of Macroeconomics, De Gruyter, vol. 12(1), pages 1-44, June.
    11. Federico Lubello & Abdelaziz Rouabah, 2017. "Capturing macroprudential regulation effectiveness: A DSGE approach with shadow intermediaries," BCL working papers 114, Central Bank of Luxembourg.
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    More about this item

    Keywords

    LTV; Risk weights; optimal macroprudential policy; combination of macroprudential instruments;

    JEL classification:

    • 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
    • R38 - Urban, Rural, Regional, Real Estate, and Transportation Economics - - Real Estate Markets, Spatial Production Analysis, and Firm Location - - - Government Policy

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