One of the interesting debates in the finance and development literature is on financial structures: does the mix of institutions and markets that make up the financial system have any impact on the development process? Last week we hosted an interesting conference on the topic at the World Bank (click here for the agenda and papers). Those of you who have been following this literature will know this is not the first time this topic has been discussed – we held a conference on financial structures over ten years ago.
What do financial structures look like? How do they evolve with economic development? What are the determinants and impact of financial structures? Years ago Ross Levine and I, along with many others, tried to answer these questions and saw clear patterns in the data. One stylized fact: Financial systems become more complex as countries become richer with both banks and markets getting larger, more active, and more efficient. But comparatively speaking, the structure becomes more market-based in higher-income countries. We also saw that countries did not get to B from A in a single, identical path. You didn’t have any market-based financial structures in the lowest-income countries, but as soon as you got to lower-middle income, financial structures became very diverse: Costa Rica was bank-based, whereas Jamaica was much more market-based; Jordan was bank-based, Turkey was market-based etc. etc. So countries were all over the place and the correlation between GDP per capita and financial structure was less than 30 percent.