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Empowering central bank asset purchases: The role of financial policies

Matthieu Darracq Paries (), Jenny Körner () and Niki Papadopoulou ()

No 2237, Working Paper Series from European Central Bank

Abstract: This paper contributes to the debate on the macroeconomic effectiveness of expansionary non-standard monetary policy measures in a regulated banking environment. Based on an estimated DSGE model, we explore the interactions between central bank asset purchases and bank capital-based financial policies (regulatory, supervisory or macroprudential) through its influence on bank risk-shifting motives. We find that weakly-capitalised banks display excessive risk-taking which reinforces the credit easing channel of central bank asset purchases, at the cost of higher bank default probability and risks to financial stability. In such a case, adequate bank capital demand through higher minimum capital requirements curtails the excessive credit origination and restores a more efficient propagation of central bank asset purchases. As supervisors can formulate further capital demands, uncertainty about the supervisory oversight provokes precautionary motives for banks. They build-up extra capital buffer attenuating non-standard monetary policy. Finally, in a weakly-capitalised banking system, countercyclical macroprudential policy attenuates banks risk-taking and dampens the excessive persistence of the non-standard monetary policy impulse. On the contrary, in a well-capitalised banking system, macroprudential policy should look through the effects of central bank asset purchases on bank capital position, as the costs in terms of macroeconomic stabilisation seem to outweigh the marginal financial stability benefits. JEL Classification: E44, E52, F40

Keywords: asset purchases; bank capital regulation; effective lower bound; non-standard monetary policy; regulatory uncertainty; risk-taking (search for similar items in EconPapers)
Date: 2019-02
New Economics Papers: this item is included in nep-ban, nep-cba, nep-dge, nep-mac and nep-mon
Note: 604093
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Persistent link: https://EconPapers.repec.org/RePEc:ecb:ecbwps:20192237

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