Credit, Externalities, and Nonoptimality of the Friedman Rule

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DOI: 10.4236/tel.2012.22036    3,564 Downloads   6,505 Views  


We construct a cash-credit model with positive externalities in the production of credit goods. It is shown that under suitable conditions, the Friedman rule is not optimal and there exists an optimal nominal interest rate that maximizes the social welfare and output. This is because increasing the nominal interest rate improves sectoral misallocations caused by externalities in our economy.

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K. Kobayashi, M. Inaba and K. Nutahara, "Credit, Externalities, and Nonoptimality of the Friedman Rule," Theoretical Economics Letters, Vol. 2 No. 2, 2012, pp. 203-208. doi: 10.4236/tel.2012.22036.


[1] M. Friedman, “The Optimum Quantity of Money,” The Optimum Quantity of Money and Other Essays, Macmillan, London, 1996.
[2] T. F. Cooley and G. D. Hansen, “Welfare Costs of Moderate Inflation,” Journal of Money, Credit and Banking, Vol. 23, No. 3, 1991, pp. 483-503.
[3] R. J. Hodrick, N. Kocherlakota and D. Lucas, “The Variability of Velocity in Cash-in-Advance Models,” Journal of Political Economy, Vol. 99, No. 2, 1991, pp. 358-384.
[4] R. E. Lucas and N. L. Stokey, “Money and Interest in Cash-in-Advance Economy,” Econometrica, Vol. 55, No. 3, 1987, pp. 491-513. doi:10.2307/1913597
[5] M. Golosov and A. Tsyvinski, “Optimal Fiscal and Monetary Policy (with Commitment),” In: S. N. Durlauf, L. Blume, Eds., Monetary Economics (The New Palgrave Economic Collections), 2010, pp. 277-282.
[6] V. V. Chari, L. Christiano and P. Kehoe, “Optimality of the Friedman Rule in Economies with Distorting Taxes,” Journal of Monetary Economics, Vol. 37, No. 2-3, 1996, pp. 203-223. doi:10.1016/S0304-3932(96)90034-3
[7] S. Schmitt-Grohè and M. Uribe, “Optimal Fiscal and Monetary Policy under Sticky Prices,” Journal of Economic Theory, Vol. 114, No. 2, 2004, pp. 183-209. doi:10.1016/S0022-0531(03)00111-x
[8] B. Heer, “Welfare Costs of Inflation in a Dynamic Economy with Search Unemployment,” Journal of Economic Dynamics and Control, Vol. 28, No. 2, 2003, pp. 255-272. doi:10.1016/S0165-1889(02)00136-7
[9] J. Bhattacharya, J. Haslag and A. Martin, “Heterogeneity, Redistribution, and the Friedman Rule,” International Economic Review, Vol. 46, No. 2, 2005, pp. 437-454. doi:10.1111/j.1468-2354.2005.00327.x
[10] C. da Costa and I. Werning, “On the Optimality of the Friedman Rule with Heterogeneous Agents and Non- Linear Income Taxation,” Journal of Political Economy, Vol. 116, No. 1, 2008, pp. 82-112. doi:10.1086/529397
[11] R. Hiraguchi, “Wealth Inequality and Optimal Monetary Policy,” Macroeconomic Dynamics, Vol. 14, No. 5, 2010, pp. 629-644. doi:10.1017/S1365100509990885
[12] M. Shaw, J. Chang and C. Lai, “(Non)Optimality of the Friedman Rule and Optimal Taxation in a Growing Economy with Imperfect Competition,” Economics Letters, Vol. 90, No. 3, 2006, pp. 412-420. doi:10.1016/j.econlet.2005.10.002
[13] M. King, “The Institutions of Monetary Policy,” American Economic Review, Vol. 94, No. 2, 2004, pp. 1-13. doi:10.1257/0002828041301957
[14] S. D. Williamson, “Private Money,” Journal of Money, Credit and Banking, Vol. 31, 1999, pp. 469-491.
[15] L. Van Hove, “Electronic Money and the Network Externalities Theory: Lessons for Real Life,” Netnomics, Vol. 1, No. 2, 1999, pp. 137-171. doi:10.1023/A:1019105906374
[16] S. G. Harrison, “Returns to Scale and Externalities in the Consumption and Investment Sectors,” Review of Economic Dynamics, Vol. 6, No. 4, 2003, pp. 963-976. doi:10.1016/S1094-2025(03)00034-6
[17] I. Correia, J. P. Nicolini and P. Teles, “Optimal Fiscal and Monetary Policy: Equivalence Results,” Journal of Political Economy, Vol. 116, No. 1, 2008, pp. 141-170. doi:10.1086/533504

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