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Monetary theory and electronic money : reflections on the Kenyan experience

  • Willam Jack
  • Tavneet Suri
  • Robert Townsend

This article uses a class of models of money and the payments system to inform an analysis of "mobile banking" in the context of the rapid expansion of M-PESA, a new technology in Kenya that allows payments via mobile phones (even without any access to a bank account), and currently reaches close to 38 percent of Kenyan adults. The separation of households and firms in space and time suggests, in theory, from various separate models, a number of implications. These include (i) the potential gain, under some circumstances, from allowing net e-money credit creation, (ii) the impact that the associated enhancement of credit markets can have on monetary policy and on the real economy, (iii) the roles that e-money could play not only in credit but also in insurance, unrelated to its payment function, (iv) the potential role for an activist monetary policy and e-money management, (v) the role of e-money as a circulating private debt and as a store of value though with potential coordination problems associated with achieving balanced security transformation, (vi) the potential welfare losses from insisting on continuous net clearing of cash and e-money and the difficulty, in any event, of achieving this in practice, and (vii) the management of shortages in the context of fixed rates of exchange of e-money for cash. We provide some summary statistics from data collected on M-PESA agents and users that are reminiscent of the environments of the models and that support some of these implications. Other implications of the models suggest reforms to enhance the system's efficiency.

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Article provided by Federal Reserve Bank of Richmond in its journal Economic Quarterly.

Volume (Year): (2010)
Issue (Month): 1Q ()
Pages: 83-122

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Handle: RePEc:fip:fedreq:y:2010:i:1q:p:83-122:n:v.96no.1
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  1. Fuerst, Timothy S., 1992. "Liquidity, loanable funds, and real activity," Journal of Monetary Economics, Elsevier, vol. 29(1), pages 3-24, February.
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  10. Kevin Foster & Erik Meijer & Scott Schuh & Michael A. Zabek, 2010. "The 2008 Survey of Consumer Payment Choice," Public Policy Discussion Paper 09-10, Federal Reserve Bank of Boston.
  11. Grossman, Sanford & Weiss, Laurence, 1983. "A Transactions-Based Model of the Monetary Transmission Mechanism," American Economic Review, American Economic Association, vol. 73(5), pages 871-80, December.
  12. William Jack & Tavneet Suri, 2011. "Mobile Money: The Economics of M-PESA," NBER Working Papers 16721, National Bureau of Economic Research, Inc.
  13. Peter N. Ireland, 1994. "Money and the gain from enduring relationships in the turnpike model," Working Paper 94-07, Federal Reserve Bank of Richmond.
  14. Hiroshi Fujiki & Migiwa Tanaka, 2009. "Demand for Currency, New Technology and the Adoption of Electronic Money: Evidence Using Individual Household Data," IMES Discussion Paper Series 09-E-27, Institute for Monetary and Economic Studies, Bank of Japan.
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