This Working Paper should not be reported as representing the views of the IMF.The views expressed in this Working Paper are those of the author(s) and do not necessarily represent those of the IMF or IMF policy. Working Papers describe research in progress by the author(s) and are published to elicit comments and to further debate.The relative financial strength of Islamic banks is assessed empirically based on evidence covering individual Islamic and commercial banks in 18 banking systems with a substantial presence of Islamic banking. We find that (i) small Islamic banks tend to be financially stronger than small commercial banks; (ii) large commercial banks tend to be financially stronger than large Islamic banks; and (iii) small Islamic banks tend to be financially stronger than large Islamic banks, which may reflect challenges of credit risk management in large Islamic banks. We also find that the market share of Islamic banks does not have a significant impact on the financial strength of other banks. JEL Classification Numbers: G21

a b s t r a c t JEL classification: G21 G30 O16 Keywords: Foreign bank entry Financial sector reform Bank efficiency Financial intermediation UgandaUsing international comparisons and a unique bank-level dataset on the Ugandan banking system over the period 1999 to 2005, we explore the factors behind consistently high interest rate spreads and margins. International comparisons show that the small size of Ugandan banks, persistently high T-Bill rates and institutional deficiencies explain large proportions of the high Ugandan interest rate margins. The Ugandan bank panel confirms the importance of macroeconomic factors, such as high inflation, high T-Bill rates and exchange rate appreciation. There is also evidence for the small market place and high costs of doing business explaining persistently high spreads and margins; smaller banks and banks targeting the low end of the market incur higher costs and therefore higher margins. Spreads and margins also vary significantly with the sectoral loan portfolio composition of banks, while there is little evidence for foreign bank entry, privatization or changes in market structure explaining variation in spreads or margins over time.

This Working Paper should not be reported as representing the views of the IMF.The views expressed in this Working Paper are those of the author(s) and do not necessarily represent those of the IMF or IMF policy. Working Papers describe research in progress by the author(s) and are published to elicit comments and to further debate.The relative financial strength of Islamic banks is assessed empirically based on evidence covering individual Islamic and commercial banks in 18 banking systems with a substantial presence of Islamic banking. We find that (i) small Islamic banks tend to be financially stronger than small commercial banks; (ii) large commercial banks tend to be financially stronger than large Islamic banks; and (iii) small Islamic banks tend to be financially stronger than large Islamic banks, which may reflect challenges of credit risk management in large Islamic banks. We also find that the market share of Islamic banks does not have a significant impact on the financial strength of other banks. JEL Classification Numbers: G21

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Cooperative banks are an important, and growing, part of many financial systems. The paper analyzes empirically the role of cooperative banks in financial stability. Contrary to some suggestions in the literature, we find that cooperative banks are more stable than commercial banks. This finding is due to much lower volatility of the cooperative banks' returns, which more than offsets their lower profitability and capitalization. We argue that this lower variability of returns is most likely due to cooperative banks' ability to use customer surplus as a cushion in weaker periods. We also find that in systems with a high presence of cooperative banks, commercial banks are less stable than they would be otherwise. JEL Classification Numbers: G21, P13