This paper presents the main findings of an International Banking Research Network initiative examining the interaction between monetary policy and macroprudential policy in determining international bank lending. We give an overview on the data, empirical specifications and results of the seven papers from the initiative. The papers are from a range of core and smaller advanced economies, and emerging markets. The main findings are as follows. First, there is evidence that macroprudential policy in recipient countries can partly offset the spillover effects of monetary policy conducted in core countries. Meanwhile, domestic macroprudential policy in core countries can also affect the cross-border transmission of domestic monetary policy via lending abroad, by limiting the increase in lending by less strongly capitalised banks. Second, the findings highlight that studying heterogeneities across banks provides complementary insights to studies using more aggregate data and focusing on average effects. In particular, we find that individual bank characteristics such as bank size or G-SIB status play a first-order role in the transmission of these policies. Finally, the impacts differ considerably across prudential policy instruments, which also suggests the importance of more granular analysis.

We examine whether emerging market prudential policies offset the macro-financial spillover effects of US monetary policy. We find that emerging markets with tighter overall prudential policy face significantly smaller, and less negative, spillovers to total credit from US monetary policy tightening shocks. Loan-to-value ratio limits and reserve requirements appear to be particularly effective prudential tools at mitigating the spillover effects of US monetary policy. Our findings indicate that prudential policies can dampen emerging markets' exposure to US monetary policy and the associated global financial cycle, suggesting they may be a useful tool in the face of international macroeconomic policy trade-offs.

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By combining analysis of two unique confidential datasets, we examine how euro-area (EA) monetary policy and recipient-country prudential policy interact to influence the cross-border lending of French banks from France and the UK. We find that monetary spillovers via cross-border lending can be partially offset by prudential measures in receiving countries. We then explore heterogeneities in that interaction, specifically the difference made by bank size and location of the affiliate (French headquarters vs. affiliates based in the UK, an international financial centre). Focusing on lending from France, we find that the response of GSIBs' lending to EA monetary policy is less sensitive to recipient-country prudential policy than non-GSIBs'. In contrast, the response of lending to EA monetary policy from French-owned GSIB affiliates in the UK is sensitive to recipient-country prudential policy. We also find evidence that French GSIBs channel funds towards the UK in response to EA monetary policy, in a manner that is dampened by the global prudential policy setting. Together, these findings suggest the existence of a 'London Bridge': conditional on EA monetary policy, French GSIBs adjust their funds in the UK in response to global prudential policies and, from there, lend to third countries, responding to local prudential policies. French GSIBs' cross-border lending from their headquarters to EA monetary policy responds differently to foreign prudential policies than their lending from international financial centres. Finally, we find evidence of a similar pattern for all EA-owned bank affiliates in the UK, suggesting a broader relevance of the London Bridge.

This paper presents the main findings of an International Banking Research Network initiative examining the interaction between monetary policy and macroprudential policy in determining international bank lending. We give an overview on the data, empirical specifications and results of the seven papers from the initiative. The papers are from a range of core and smaller advanced economies, and emerging markets . The main findings are as follows. First, there is evidence that macroprudential policy in recipient countries can partly offset the spillover effects of monetary policy conducted in core countries. Meanwhile, domestic macroprudential policy in core countries can also affect the cross‐border transmission of domestic monetary policy via lending abroad, by limiting the increase in lending by less strongly capitalized banks. Second, the findings highlight that studying heterogeneities across banks provides complementary insights to studies using more aggregate data and focusing on average effects. In particular, we find that individual bank characteristics such as bank size or GSIB status play a first‐order role in the transmission of these policies. Finally, the impacts differ considerably across prudential policy instruments, which also suggests the importance of more granular analysis.