Financial spillovers, spillbacks, and the scope for international macroprudential policy coordination

This paper discusses the scope for international macroprudential policy coordination in a financially integrated world economy. It begins with a review of the transmission channels associated with, and the empirical evidence on, financial spillovers and spillbacks. Limitations of the existing literature are also identified. The potential gains associated with cross-border macroprudential coordination, dwelling on both recent analytical contributions and quantitative studies based on multi-country models with financial frictions, are then evaluated. The issue of whether coordination of macroprudential policies simultaneously requires some degree of monetary policy coordination is also discussed. The analysis focuses on the potential for policy coordination between major advanced economies and a group identified as systemically-important middle-income countries (SMICs). Next, practical ways to promote international macroprudential policy coordination are considered. Following a discussion of Basel III's Principle of reciprocity and ways to improve it, the paper advocates a further strengthening of the current statistical, empirical and analytical work conducted by international financial institutions to evaluate, and raise awareness of, the gains from international coordination of macroprudential policies.