Abstract
Purpose The purpose of this paper is to investigate and compare the impact of oil and gas prices changes on bank deposits at the aggregate as well as at the level of commercial and Islamic banks in Qatar over the period 2000-2016. Design/methodology/approach Using the BankScope Database as well as bank-level balance sheet and financial statements data, the authors use one-step system GMM dynamic model to examine and compare the association between oil and gas prices changes with bank deposits in Qatar. The authors also test hypotheses of direct and indirect impacts of oil and gas prices changes on bank deposits. Findings The results indicate that oil and gas prices changes have a direct impact on deposits of banks at the aggregate level in Qatar. However, the authors find that oil and gas price changes significantly affect deposits of Qatari commercial banks directly prompting enhanced lending by banks and the consequent business activities in the economy, while their impact on the deposits of Qatari Islamic banks is indirect, i.e. the impact is permeated through the macroeconomic and institutional characteristics of the country that are reinforced by the growing expectations and commercial sentiment of the country. The authors find that significant association between oil price changes and deposit growth during the global financial crisis 2008 has been distorted. However, the authors find that there was a sharp rise in the deposits of Islamic banks during the period of global financial crisis. Practical implications The results of this study necessitate policy measures that can counter the effects of changes in oil and gas prices on the effectiveness of bank deposits. Originality/value It is widely recognized that oil and gas prices and the level of production are of great importance to the economic development of oil and gas exporting countries. So far, however, no econometric study has been reported in the literature which analyses and compares the impact of oil and gas prices changes on bank deposits of commercial and Islamic banks and also at the aggregate level in any of the oil-exporting economies. Thus, this study provides the first empirical evidence on distinct direct and indirect channels through which oil and gas prices changes may affect bank deposits.