The Implication of Exchange Rate Volatility on Nigeria’s External Reserves: 1980-2020

Soro, Garbobiya Tuwe and Aras, Osman Nuri (2021): The Implication of Exchange Rate Volatility on Nigeria’s External Reserves: 1980-2020. Published in: Journal of Management, Economics, and Industrial Organization , Vol. 5, No. 2 (1 May 2021): pp. 37-47.

Abstract

Given the volatile nature of the exchange rate in Nigeria and the dynamics in the external reserves of the nation which are kept in foreign currency (dollar), this paper examined the impact of exchange rate shocks on the Nigerian external reserves using annual data from 1980 to 2019. Employing the Autoregressive Distributed Lag model, the results of the study indicates that exchange rate has an asymmetric impact on reserves, suggesting that the partial sum of exchange rate differ in magnitude and size relative to reserves in both positive and negative direction. The impact of a positive shock in exchange rate on reserves is statistically significant while the effect of a negative shock in exchange on reserve is statistically insignificant in the long-run. The same relationship holds for the short-run effect, although, both the positive and the negative short-run effects are statistically insignificant. The study therefore recommends that monetary authority should strengthens the exchange rate by adopting a flexible exchange floating and making it to thrives in order to boost reserves. Some of these policies could include allowing the market forces to determine the exchange rate and harmonizing the exchange rate position of the country.

• Item Type: MPRA Paper
• Language: English
• Keywords: Exchange Rate, External Reserves, Non-Linear Autoregressive Distributed Lag Model, Nigeria.
• Subjects: F - International Economics > F3 - International Finance > F31 - Foreign Exchange

References

Aizenman, J., & Marion, N. (2004). International reserve holdings with sovereign risk and costly tax collection. The Economic Journal, 114(497), 569-591.

Ajibola, I. O., Udoette, U. S., Omotosho, B. S., & Muhammad, R. A. (2015). Nonlinear adjustments between exchange rates and external reserves in Nigeria: A threshold cointegration analysis. CBN Journal of Applied Statistics, 6(1), 111-132.

Flood, P., & Marion, N. (2002). Holding international reserves in an era of high capability mobility. IMF Working Paper, International Monetary Fund WP/02/62.

Flood, R. P., & Marion, N. P. (2002). International Reserves in an Era of High Capital Mobility, International Monetary Fund, Washington, DC. IMF Working Paper, No. WP/02/62.

Frenkel, J. A., & Jovanovic, B. (1981). Optimal international reserves: a stochastic framework. The Economic Journal, 91(362), 507-514.

Heller, H. R. (1966). Optimal international reserves. The Economic Journal, 76(302), 296-311.

Imarhiagbe, S. (2015). Examining the impact of crude oil price on external reserves: evidence from Nigeria. International Journal of Economics and Finance, 7(5), 13-21. DOI:10.5539/ijef.v7n5p13

International Monetary Fund. (2013). Selected decisions and selected documents of the IMF, Thirtieth Issue - Surveillance over Exchange Rate Policies, Legal Department of the IMF, Washington.

Kalu, E. U., Ugwu, O. E., Ndubuaku, V. C., & Ifeanyi, O. P. (2019). Exchange rate and foreign reserves interface: empirical evidence from Nigeria. The Economics and Finance Letters, 6(1), 1-8. DOI: 10.18488/journal.29.2019.61.1.8

Nwachukwu, N. E., Ali, A. I., Abdullahi, I. S., Shettima, M. A., Zirra, S. S., Falade, B. S., & Alenyi, M. J. (2016). Exchange rate and external reserves in Nigeria: A threshold cointegration analysis. CBN Journal of Applied Statistics, 7(1), 233-254.

Obadan, M. I. (1993). Nigeria's Exchange Rate Policy and Management (No.5). National Centre for Economic Management and Administration.

Obadan, M. I. (2006). Overview of exchange rate management in Nigeria, Bullion, 30(3), 1-9.

Ojo, M. O. (1990). Management of foreign exchange resources under Nigeria's structural adjustment programme, CBN Economic and Financial Review, 28(3), 31-44.

Osako, G. C., Masha, I., & Adamgbe, E. (2003). Issues in exchange rate policy: Economic and political considerations. In Contemporary economic policy issues in Nigeria (pp. 314-343). Abuja: Central Bank of Nigeria.

Ramachandran, M. (2005). High capital mobility and precautionary demand for international reserves. Journal of Quantitative Economics, 3(2), 15-29. DOI: 10.1007/BF03404623

Shaibu, I., & Izedonmi, F. I. (2020). An Autoregressive Distributed-Lag Modeling Approach to Nigeria’s External Reserves Dynamics. International Journal of Academic Research in Business and Social Sciences, 10(2), 539-557.

Shaibu, I., & Izedonmi, F. I. (2020). An Autoregressive Distributed-Lag Modeling Approach to Nigeria’s External Reserves Dynamics. International Journal of Academic Research in Business and Social Sciences, 10(2), 539-557. DOI:10.6007/IJARBSS/v10-i2/6948

Tariq, M., Haq, Z., Jan, S., Jehangir, M., & Aamir, M. (2014). Real exchange rate and foreign exhange reserves: A mercantilist view. Life Science Journal, 11(3), 13-25. DOI:10.7537/marslsj1103s14.25