IDEAS home Printed from https://ideas.repec.org/a/taf/intecj/v15y2001i1p61-93.html
   My bibliography  Save this article

Optimal Currency Target Zones: How Wide Should Exchange Rate Bands Be?

Author

Listed:
  • Joon-Hwan Im

Abstract

This paper presents a model of an optimal currency band in which a central bank with an infinite time horizon faces a trade-off between interest rate deviation costs and exchange rate deviation costs. The bank chooses optimal intervention points in order to minimize the value of the loss function. The paper uses the Bellman inequalities for instantaneous control of the regulated Brownian motion to derive an optimal currency band and optimal intervention policy characterized by two barriers. This model derives some interesting results. First, the width of currency band depends positively on the uncertainty of the shock, the degree of speculative pressure, and central bank's concern about the domestic money market versus the foreign exchange market. Second, the central bank finds it optimal not to intervene when the fundamental rate is inside a certain band, whereas once it lies outside the band, the optimal policy is to move it to the nearest boundary. [F31]

Suggested Citation

  • Joon-Hwan Im, 2001. "Optimal Currency Target Zones: How Wide Should Exchange Rate Bands Be?," International Economic Journal, Taylor & Francis Journals, vol. 15(1), pages 61-93.
    • Handle: RePEc:taf:intecj:v:15:y:2001:i:1:p:61-93
    DOI: 10.1080/10168730100000004
    as

    Download full text from publisher

    File URL: http://www.tandfonline.com/doi/abs/10.1080/10168730100000004
    Download Restriction: Access to full text is restricted to subscribers.
    File URL: https://libkey.io/10.1080/10168730100000004?utm_source=ideas
    LibKey link: if access is restricted and if your library uses this service, LibKey will redirect you to where you can use your library subscription to access this item
    ---><---

    As the access to this document is restricted, you may want to search for a different version of it.

    References listed on IDEAS

    as
    1. Robert P. Flood & Peter M. Garber, 1991. "The Linkage Between Speculative Attack and Target Zone Models of Exchange Rates," The Quarterly Journal of Economics, President and Fellows of Harvard College, vol. 106(4), pages 1367-1372.
    2. J. Michael Harrison & Michael I. Taksar, 1983. "Instantaneous Control of Brownian Motion," Mathematics of Operations Research, INFORMS, vol. 8(3), pages 439-453, August.
    3. Svensson, Lars E. O., 1991. "Target zones and interest rate variability," Journal of International Economics, Elsevier, vol. 31(1-2), pages 27-54, August.
    4. Dale W. Henderson & Stephen W. Salant, 1976. "Market anticipations, government policy, and the price of gold," International Finance Discussion Papers 81, Board of Governors of the Federal Reserve System (U.S.).
    5. J. Michael Harrison & Thomas M. Sellke & Allison J. Taylor, 1983. "Impulse Control of Brownian Motion," Mathematics of Operations Research, INFORMS, vol. 8(3), pages 454-466, August.
    6. Miller, Marcus & Zhang, Lei, 1996. "Optimal target zones: How an exchange rate mechanism can improve upon discretion," Journal of Economic Dynamics and Control, Elsevier, vol. 20(9-10), pages 1641-1660.
    7. Labhard, Vincent & Wyplosz, Charles, 1996. "The New EMS: Narrow Bands inside Deep Bands," American Economic Review, American Economic Association, vol. 86(2), pages 143-146, May.
    8. Salant, Stephen W, 1983. "The Vulnerability of Price Stabilization Schemes to Speculative Attack," Journal of Political Economy, University of Chicago Press, vol. 91(1), pages 1-38, February.
    9. Salant, Stephen W & Henderson, Dale W, 1978. "Market Anticipations of Government Policies and the Price of Gold," Journal of Political Economy, University of Chicago Press, vol. 86(4), pages 627-648, August.
    10. Froot, Kenneth A. & Obstfeld, Maurice, 1991. "Exchange-rate dynamics under stochastic regime shifts : A unified approach," Journal of International Economics, Elsevier, vol. 31(3-4), pages 203-229, November.
    11. Maurice Obstfeld, 1988. "The Effectiveness of Foreign-Exchange Intervention: Recent Experience," NBER Working Papers 2796, National Bureau of Economic Research, Inc.
    Full references (including those not matched with items on IDEAS)

    Citations

    Citations are extracted by the CitEc Project, subscribe to its RSS feed for this item.
    as


    Cited by:

    1. Lee, Hsiu-Yun & Lai, Hung-Pin, 2011. "A structural threshold model of the exchange rate under optimal intervention," Journal of International Money and Finance, Elsevier, vol. 30(6), pages 931-946, October.

    Most related items

    These are the items that most often cite the same works as this one and are cited by the same works as this one.
    1. Piersanti, Giovanni, 2012. "The Macroeconomic Theory of Exchange Rate Crises," OUP Catalogue, Oxford University Press, number 9780199653126, Decembrie.
    2. Svensson, Lars E. O., 1992. "The foreign exchange risk premium in a target zone with devaluation risk," Journal of International Economics, Elsevier, vol. 33(1-2), pages 21-40, August.
    3. Miller, Marcus & Weller, Paul, 1991. "Exchange Rate Bands with Price Inertia," Economic Journal, Royal Economic Society, vol. 101(409), pages 1380-1399, November.
    4. Delgado, Francisco & Dumas, Bernard, 1993. "Monetary contracting between central banks and the design of sustainable exchange-rate zones," Journal of International Economics, Elsevier, vol. 34(3-4), pages 201-224, May.
    5. Cadenillas, Abel & Zapatero, Fernando, 1999. "Optimal Central Bank Intervention in the Foreign Exchange Market," Journal of Economic Theory, Elsevier, vol. 87(1), pages 218-242, July.
    6. Lin, Hwan C., 2008. "Forward-rate target zones and exchange rate dynamics," Journal of International Money and Finance, Elsevier, vol. 27(5), pages 831-846, September.
    7. Gaudet, Gerard & Salant, Stephen W., 2003. "The effects of periodic quotas limiting the stock of imports of durables," Journal of Economic Theory, Elsevier, vol. 109(2), pages 402-419, April.
    8. Lewis, Karen K, 1996. "Stochastic Regime Switching and Stabilizing Policies within Regimes," International Journal of Finance & Economics, John Wiley & Sons, Ltd., vol. 1(2), pages 71-85, April.
    9. Svensson, Lars E. O., 1991. "The term structure of interest rate differentials in a target zone : Theory and Swedish data," Journal of Monetary Economics, Elsevier, vol. 28(1), pages 87-116, August.
    10. Lu, You-Xun, 2022. "The stabilizing effect of the zero lower bound: A perspective of interest rate target zones," The Quarterly Review of Economics and Finance, Elsevier, vol. 84(C), pages 61-67.
    11. Vajanne, Laura, . "The Exchange Rate Under Target Zones," ETLA A, The Research Institute of the Finnish Economy, number 16.
    12. Sutherland, A. & Miller, M., 1990. "Britain'S Return To Gold And Impending Entry Into The Ems: Expectations, Joining Conditions And Credibility," The Warwick Economics Research Paper Series (TWERPS) 361, University of Warwick, Department of Economics.
    13. Stocking, Andrew, 2012. "Unintended consequences of price controls: An application to allowance markets," Journal of Environmental Economics and Management, Elsevier, vol. 63(1), pages 120-136.
    14. Gabriel de Koch & Vittorio Grilli, 1989. "Endogenous Exchange Rate Regime Switches," NBER Working Papers 3066, National Bureau of Economic Research, Inc.
    15. Barry Eichengreen & Peter M. Garber, 1991. "Before the Accord: U.S. Monetary-Financial Policy, 1945-51," NBER Chapters, in: Financial Markets and Financial Crises, pages 175-206, National Bureau of Economic Research, Inc.
    16. Maurice Obstfeld, 1986. "Speculative Attack and the External Constraint in a Maximizing Model of the Balance of Payments," Canadian Journal of Economics, Canadian Economics Association, vol. 19(1), pages 1-22, February.
    17. Fang, Chung-rou & Lai, Ching-chong, 2002. "Targeting nominal income versus targeting price level: A target zone perspective," International Review of Economics & Finance, Elsevier, vol. 11(3), pages 229-249.
    18. Jean-Pierre Laffargue & Sanvi Avouyi-Dovi, 1992. "Anticipations stabilisatrices dans un système de serpent monétaire. Théorie et application au système monétaire européen," Revue Économique, Programme National Persée, vol. 43(6), pages 1107-1128.
    19. Robert P. Flood & Peter M. Garber, 1987. "Gold Monetization and Gold Discipline," Palgrave Macmillan Books, in: Robert Z. Aliber (ed.), The Reconstruction of International Monetary Arrangements, chapter 10, pages 183-211, Palgrave Macmillan.
    20. António Portugal Duarte & João Sousa Andrade & Adelaide Duarte, 2013. "Exchange Rate Target Zones: A Survey Of The Literature," Journal of Economic Surveys, Wiley Blackwell, vol. 27(2), pages 247-268, April.

    More about this item

    Statistics

    Access and download statistics

    Corrections

    All material on this site has been provided by the respective publishers and authors. You can help correct errors and omissions. When requesting a correction, please mention this item's handle: RePEc:taf:intecj:v:15:y:2001:i:1:p:61-93. See general information about how to correct material in RePEc.

    If you have authored this item and are not yet registered with RePEc, we encourage you to do it here. This allows to link your profile to this item. It also allows you to accept potential citations to this item that we are uncertain about.

    If CitEc recognized a bibliographic reference but did not link an item in RePEc to it, you can help with this form .

    If you know of missing items citing this one, you can help us creating those links by adding the relevant references in the same way as above, for each refering item. If you are a registered author of this item, you may also want to check the "citations" tab in your RePEc Author Service profile, as there may be some citations waiting for confirmation.

    For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: Chris Longhurst (email available below). General contact details of provider: http://www.tandfonline.com/RIEJ20 .

    Please note that corrections may take a couple of weeks to filter through the various RePEc services.

    IDEAS is a RePEc service. RePEc uses bibliographic data supplied by the respective publishers.