INVESTIGATING THE EFFECTIVENESS OF STERILIZATION POLICY IN CONTROLLING MONEY SUPPLY AND CAPITAL INFLOWS IN NIGERIA
Keywords:Sterilization policy, capital inflow, money supply and monetary policy
Over the last decade, Nigeria has witnessed rising capital inflows that have kept the monetary authorities on their toes. This study, therefore, investigated the effectiveness of sterilization policy in controlling money supply and capital inflows in Nigeria. The need for this investigation arose from observed dearth of study in this area in Nigeria as well as the surge in capital inflows within the study period with its likely macroeconomic implications. The study would answer the question: (1) to what extent does sterilization effort of the Central Bank of Nigeria effective in controlling capital inflows in Nigeria, (2) to what extent is sterilization policy able to regulate money supply in Nigeria. By utilizing monthly data spanning a period of 2010-2018 under the framework of Two Stage Least Squares (2SLS), findings show that the sterilization policy of the CBN is effective in regulating money supply and depressing capital inflows both in period of normal capital inflows and in period of intensive capital inflows. We therefore recommend that in periods of sudden and volatile capital inflows, sterilization measure should be given a priority in order to stave off the negative consequences of such unexpected inflows. We also recommend fiscal prudency on the part of the fiscal authorities, especially within the period of high and volatile capital inflows just as the observance of a synergy between fiscal and monetary policies is not ruled out.
Aizenman, J., & Glick, R. 2008. “Sterilization, Monetary Policy, and Global Financial Integration,” mimeo. In University of California, Santa Cruz. Retrieved from: https://www.frbsf.org/publications/economics/paper/2008/wp08-15bk.pdf, https://doi.org/10.24148/wp2008-15
Bazot, G., Monnet, E., & Morys, M. (2019). Taming the Global Financial Cycle: Central Banks and the Sterilization of Capital Flows in the First Era of Globalization (1891-1913). CEPR Discussion Paper no. 13895.
Begum, M. N. (2014). Reserve Accumulation and Sterilized Intervention in the Foreign Exchange Market in Bangladesh: An Empirical analysis. Research Department, Bangladesh Bank, Working Paper Series, WP 1404.
Blanchard, O., & Adler, G. (2015). Can foreign exchange intervention stem exchange rate pressures from global capital flow shocks? (No. w21427). National Bureau of Economic Research. https://doi.org/10.3386/w21427
Cavoli, T. (2005). Sterilization, capital mobility and interest rate determination for East Asia. International Macroeconomics and Finance Program Centre for International Economic Studies. Discussion Paper No. 0502 Central Bank of Nigeria Statistical Bulletin (2018). Retreived from: https://www.cbn.gov.ng/documents/Statbulletin.asp
Chung, C. P., Hwang, J. T., & Wang, C. H. (2014). The effectiveness and sustainability of the sterilization policy in China. Economics Research International, 2014. Retrieved from: https://www.hindawi.com/journals/ecri/2014/509643/, https://doi.org/10.1155/2014/509643
Djedaiet, A., & Ayad, H. (2017). Hard currency inflows and sterilization policy in Algeria: An ARDL approach. Theoretical & Applied Economics, 24(3). 24(3), 83-96.
Elhendawy, E. O. (2015). Sterilization and Inflation in the Long-Term Empirical Evidence from Egypt. Applied Economics and Finance, 2(2), 68-78. https://doi.org/10.11114/aef.v2i2.757
Fair, R. C. (1970). The estimation of simultaneous equation models with lagged endogenous variables and first order serially correlated errors. Econometrica: Journal of the Econometric Society, 507-516. https://doi.org/10.2307/1909556
Hashmi, M. S., Xu, C., Khan, M. M., Bashir, M., & Ghazanfar, F. (2011). Monetary Policy Reaction Function and Sterilization of Capital Inflows: An Analysis of Asian Countries. Asian Social Science, 7(9), 19.-32 https://doi.org/10.5539/ass.v7n9p19
International Monetary Fund (2013). Nigeria: Publication of financial sector assessment program documentation-technical note on strengthening monetary and liquidity management. International Monetary Fund, Washington, D.C.
International Monetary Fund (2018). International Financial Statistics, Monetary and Financial statistics by indicator. Retrieved from https://data.imf.org/regular.aspx?key=61545868
Kawai, M., & Lamberte, M. (2008). Managing capital flows in Asia: policy issues and challenges. ADBI Research Policy Brief, 26. Retrieved from https://www.adb.org/sites/default/files/publication/157267/adbi-rpb26.pdf https://doi.org/10.4337/9781849806879.00009
Khushk, A. G., Gilal, M. A., & Taherani, A. (2015). Capital movements and sterilization policies in Pakistan. Grassroots, 49(2).
Lavigne, R. (2008). Sterilized intervention in emerging-market economies: trends, costs, and risks (No. 2008-4). Bank of Canada Discussion Paper.
Lee, J. Y. (1997). Sterilizing capital inflows (Vol. 7). International Monetary Fund. Retrieved from: https://www.imf.org/EXTERNAL/PUBS/FT/ISSUE7/INDEX.HTM.
Lin, Y. Y. K. (2012). The effectiveness of implementing sterilization for thailand, indonesia, the republic of korea and malaysia after the asian financial crisis. Ann Arbor, 1001, 48106-1346.
Ljubaj, I., Martinis, A., & Mrkalj, M. (2010). Capital Inflows and Efficiency of Sterilisaton–Estimation of Sterilisation and Offset Coefficients. Hrvatska narodra banka (No. 24). Working Paper.
Mansour, L. (2012). Hoarding of International Reserves and Sterilization in Dollarized and Indebted Countries: an effective monetary policy?. Document De Travail working paper 1208. Retrieved from: http://haalshs.archives-ouvertess.fr/hllshs-0069511
Montiel, P., & Reinhart, C. M. (1999). Do capital controls and macroeconomic policies influence the volume and composition of capital flows? Evidence from the 1990s. Journal of international money and finance, 18(4), 619-635. https://doi.org/10.1016/s0261-5606(99)00021-2
Okpanachi, U. M. (2012). An assessment of monetary policy response to capital inflows in Nigeria. CBN Journal of Applied Statistics, 3(2), 75-98.
Ouyang, A. Y., & Rajan, R. (2005). Monetary sterilization in China since the 1990s: how much and how effective? Centre for International Economic Studies, University of Adelaide.
Ouyang, A. Y., Rajan, R. S., & Willett, T. D. (2010). China as a reserve sink: The evidence from offset and sterilization coefficients. Journal of International Money and Finance, 29(5), 951-972. https://doi.org/10.1016/j.jimonfin.2009.12.006
Ponomarenko, A. (2019). Do sterilized foreign exchange interventions create money?. Journal of Asian Economics, 62, 1-16. Retrieved from: www.cbr.ruhttps://doi.org/10.1016/j.asieco.2019.03.001
Qayyum, A., & Khan, M. A. (2003). Capital flows and money supply: the degree of sterilisation in Pakistan. The Pakistan Development Review, 975-985. https://doi.org/10.30541/v42i4iipp.975-985
Reinhart, C. M., & Reinhart, V. (1998). Some lessons for policy makers who deal with the mixed blessing of capital inflows. Capital flows and financial crises, 93-127. Retrieved from: http://mpra.ub.uni-muenchen.de/7123/
Takagi, S. & Esaka, T. (1999). Sterilization and the Capital Inflow Problem in East Asia. Economic Research Institute Economic Planning Agency, Tokyo, Japan. https://doi.org/10.7208/chicago/9780226387017.003.0007
Tomasz, M. (2016). Managing volatile capital flows: the case of Nigeria. Экономика и управление, (4), 48. Retrieved from: http://elibrary.miu.by/journals!/item.eiup/issue.48/article.14.html
Vinayagathasan, T. (2013). Monetary policy and the real economy: A Structural VAR Approach for Sri Lanka. National Graduate Institute for Policy Studies, 13(13), 1-31. Retrieved from: https://ideas.repec.org/p/ngi/dpaper/13-13.html
Yan, H. D., & Yang, C. L. (2008). Foreign capital inflows and the current account imbalance: Which causality direction?. Journal of Economic Integration, 434-461. https://doi.org/10.11130/jei.2008.23.2.434
Zhang, C. (2010). Sterilization in China: effectiveness and cost. The Wharton School. University of Pennsylvania. Retrieved from: https://www.google.com/search?client=firefox-bd&q=Zang+%282011%29+on+sterilization+of+capital+inflows https://doi.org/10.2139/ssrn.1708162