Before the 2008 crisis, the cross-sectional skewness of banks' leverage went up and macro risk concentrated in the balance sheets of large banks. Using a model of profit-maximizing banks with heterogeneous Value-at-Risk constraints, we extract the distribution of banks' risk-taking parameters...

We study the design of macroprudential policies based on quantitative collateral-constraint models. We show that the desirability of macroprudential policies critically depends on the specific form of collateral used in debt contracts: While inefficiencies arise when current prices affect...

Should monetary policy have a prudential dimension? That is, should policymakers raise interest rates to rein in financial excesses during a boom? We theoretically investigate this issue using an aggregate demand model with asset price booms and financial speculation. In our model, monetary...

We develop a model of banking crises which Is consistent with two important features of the data: First, banking crises are usually preceded by credit booms. Second, credit booms often do not result in a crisis. That is, there are "good" booms as well as "bad" booms in the language of Gorton and...

We analyze how regulatory constraints on household leverage--in the form of loan-to-income and loan-to-value limits--affect residential mortgage credit and house prices as well as other asset classes not directly targeted by the limits. Supervisory loan level data suggest that mortgage credit is...

"Liability dollarization,'' namely intermediation of capital inflows in units of tradables into domestic loans in units of aggregate consumption, adds three important effects driven by real-exchange-rate fluctuations that alter standard models of Sudden Stops significantly: Changes on the debt...

"Leaning against the wind" (LAW), that is, tighter monetary policy for financial-stability purposes, has costs in terms of a weaker economy with higher unemployment and lower inflation and possible benefits from a lower probability or magnitude of a (financial) crisis. A first obvious cost is a...

Macroprudential policy holds the promise of becoming a powerful tool for preventing financial crises. Financial amplification in response to domestic shocks or global spillovers and pecuniary externalities caused by Fisherian collateral constraints provide a sound theoretical foundation for this...

We ask whether recent changes in monetary policy due to the financial crisis will be temporary or permanent. We present evidence from two surveys--one of central bank governors, the other of academic specialists. We find that central banks in crisis countries are more likely to have resorted to...

We have entered a world of conjoined monetary and macroprudential policies. But can they function smoothly in tandem, and with what effects? Since this policy cocktail has not been seen for decades, the empirical evidence is almost non-existent. We can only fix this shortcoming in a historical...