NBER Publications by Joon-Ho Hahm

A lending boom is reflected in the composition of bank liabilities when traditional retail deposits (core liabilities) cannot keep pace with asset growth and banks turn to other funding sources (non-core liabilities) to finance their lending. We formulate a model of credit supply as the flip side of a credit risk model where a large stock of non-core liabilities serves as an indicator of the erosion of risk premiums and hence of vulnerability to a crisis. We find supporting empirical evidence in a panel probit study of emerging and developing economies.

This paper examines macroprudential policies in open emerging economies. It discusses how the recent financial crisis has provided a rationale for macroprudential policies to help manage the economy and the need for policymakers to monitor the financial cycle and systemic risks. It also discusses one particularly promising measure of the state of the financial cycle, the growth of non-core liabilities of the financial sector, and evaluates macroprudential policy frameworks. The paper uses Korea as an example and conducts an empirical evaluation of non-core liabilities of Korean banks as a measure of the financial cycle.