Adoption of Financial Technologies: Implications for Money Demand and Monetary Policy
AbstractIn this paper we argue that the relevant decision for the majority of US households is not the fraction of assets to be held in interest bearing form, but whether to hold any of such assets at all (we call this `the decision to adopt' the financial technology). We show that the key variable governing the adoption decision is the product of the interest rate times the total amount of assets. The implication is that, instead of studying money demand using time series and looking at historical interest rate variations, we can look at a cross-section of households and analyze variations in the amount of assets held. We can use this methodology to estimate the interest elasticity of money demand at interest rates close to zero. We find that (a) the elasticity of money demand is very small when the interest rate is small, (b) the probability that a household holds any amount of interest bearing assets is positively related to the level of financial assets, and (c) the cost of adopting financial technologies is positively related to age and negatively related to the level of education. The finding that the elasticity is very small for interest rates below 5 percent suggests that the welfare costs of inflation are small. We also find that at interest rates of 6 percent, the elasticity is close to 0.5. We find that roughly one half of this elasticity can be attributed to the Baumol-Tobin or intensive margin and half of it can be attributed to the new adopters or extensive margin. The intensive margin is less important at lower interest rates and more important at higher interest rates.
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Bibliographic InfoPaper provided by National Bureau of Economic Research, Inc in its series NBER Working Papers with number 5504.
Date of creation: Mar 1996
Date of revision:
Publication status: published as (Published as "Extensive Margins and the Demand for Money at Low Interest Rates") Journal of Political Economy (October 2000).
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Other versions of this item:
- Casey B. Mulligan & Xavier Sala-i-Martin, 1995. "Adoption of financial technologies: Implications for money demand and monetary policy," Economics Working Papers 134, Department of Economics and Business, Universitat Pompeu Fabra.
- Mulligan, Casey B & Sala-i-Martin, Xavier, 1996. "Adoption of Financial Technologies: Implications for Money Demand and Monetary Policy," CEPR Discussion Papers 1358, C.E.P.R. Discussion Papers.
- E40 - Macroeconomics and Monetary Economics - - Money and Interest Rates - - - General
- E41 - Macroeconomics and Monetary Economics - - Money and Interest Rates - - - Demand for Money
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- Barro, Robert J., 1970.
"Inflation, the Payments Period, and the Demand for Money,"
3451392, Harvard University Department of Economics.
- Barro, Robert J, 1970. "Inflation, the Payments Period, and the Demand for Money," Journal of Political Economy, University of Chicago Press, vol. 78(6), pages 1228-63, Nov.-Dec..
- Karni, Edi, 1973. "The Transactions Demand for Cash: Incorporation of the Value of Time into the Inventory Approach," Journal of Political Economy, University of Chicago Press, vol. 81(5), pages 1216-25, Sept.-Oct.
- Mulligan, Casey B, 1997. "Scale Economies, the Value of Time, and the Demand for Money: Longitudinal Evidence from Firms," Journal of Political Economy, University of Chicago Press, vol. 105(5), pages 1061-79, October.
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