Abstract
Recent evidence indicates that surges in capital inflows and credit booms can increase the probability of a subsequent banking crisis. Using a new country-level panel database on financial fragility, we take this analysis further by exploring the interaction of surges, booms and fragility. We find that booms and fragility are both important, but booms increase the probability of a crisis only in financial systems with a relatively high level of fragility. Booms appear not to be dangerous in countries with a robust banking system.