Download or read book Optimal Macroprudential Policy and Asset Price Bubbles written by Nina Biljanovska and published by International Monetary Fund. This book was released on 2019-08-30 with total page 51 pages. Available in PDF, EPUB and Kindle. Book excerpt: An asset bubble relaxes collateral constraints and increases borrowing by credit-constrained agents. At the same time, as the bubble deflates when constraints start binding, it amplifies downturns. We show analytically and quantitatively that the macroprudential policy should optimally respond to building asset price bubbles non-monotonically depending on the underlying level of indebtedness. If the level of debt is moderate, policy should accommodate the bubble to reduce the incidence of a binding collateral constraint. If debt is elevated, policy should lean against the bubble more aggressively to mitigate the pecuniary externalities from a deflating bubble when constraints bind.