Banking structure and the bank lending channel of monetary policy transmission: Evidence from panel data methods

Abstract

This study examines comprehensively the bank-lending channel of monetary policy for Zambia using a bank-level panel data covering the period Q1 2005 to Q4 2016. Specifically, the study investigates the effects of monetary policy changes on loan supply by commercial as well as the effect of bank-specific factors on response of loan supply to monetary policy shocks. In addition, the study investigates whether the level of bank competition does affect the bank-lending channel. Using a dynamic panel data approaches developed by Arellano-Bond (1991), the results indicate that a bank-lending channel exists in Zambia. In particular, the results show that loan supply is negatively correlated with policy rate implying that following monetary policy tightening loan supply shrinks. Further, the results indicate that size, liquidity and bank-competiveness have effects on credit supply while capitalization has no effect. Specifically, the results show that bank size has negative effect on credit supply while liquidity and market power were found to enhance credit supply. Most importantly, the results showed that bank-specific factors and bank-competiveness is responsible for the asymmetrical response of banks to monetary policy. Specifically, the results showed that larger banks, banks with more market power, well-capitalized banks and liquid banks respond less to monetary policy tightening.

Keywords

• monetary policy transmission| bank lending channel| panel data| generalized method of moments| Zambia