While we worry about the unbanked population that faces significant costs for trivial transactions, there is also a not insignificant share of the population that is unwilling to have bank accounts for religious reasons. Islam and some strands of Christianity forbid the use of interest. Islamic banking has emerged in response and is offering deposit accounts that do not provide interest, but shares in the bank's profits. If this becomes more commonplace this could have important implications for how we think about banking, regulation and systemic risk in this sector.
Cagri Kumru and Saran Sarntisart show that if such a sizable population exists, then it is welfare improving to have an alternative banking system in place. It seems kind of obvious that it would be a loss to society not to capture these savings for growth-enhancing loans. The paper also shows that this alternative banking sector would emerge endogenously. The market forces are thus doing the right thing. What we need to be careful about is how to adjust the regulatory framework to not mess things up unnecessarily. And I see no reason why we should resist the emergence of such a banking sector.
Cagri Kumru and Saran Sarntisart show that if such a sizable population exists, then it is welfare improving to have an alternative banking system in place. It seems kind of obvious that it would be a loss to society not to capture these savings for growth-enhancing loans. The paper also shows that this alternative banking sector would emerge endogenously. The market forces are thus doing the right thing. What we need to be careful about is how to adjust the regulatory framework to not mess things up unnecessarily. And I see no reason why we should resist the emergence of such a banking sector.
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