Munich Personal RePEc Archive

The simple analytics of oligopoly banking in developing economies

Khemraj, Tarron (2010): The simple analytics of oligopoly banking in developing economies. Forthcoming in: Journal of Business, Finance and Economics in Emerging Economies

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Abstract

Previous studies have documented the tendency for the commercial banking sector of many developing economies to be highly liquid and be characterised by a persistently high interest rate spread. This paper embeds these stylised facts in an oligopoly model of the banking firm. The paper derives both the loan and deposit rates as a mark up rate over a relatively safe foreign interest rate. Then, using a diagrammatic framework, the paper provides an analysis of: (i) the distribution of financial surplus among savers, business borrowers and banks; (ii) exogenous deposit shocks; (iii) exogenous loan demand shocks; and (iv) the impact of interest rate control on financial intermediation.

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