External Debt, Domestic Debt and Inflation in Nigeria: A Multivariate Granger-Causality Test

  • Akingbade U. Aimola University of South Africa, South Africa
  • Nicholas M. Odhiambo University of South Africa, South Africa
Keywords: Domestic Debt, External Debt, Inflation, Nigeria, Granger-Causality

Abstract

Most recent studies have established a significant link between public debt and inflation. However, limited studies dealt with the direction of causality between these variables. Since external public debt relief in 2005, the Nigerian government has pursued public debt management strategy aimed at restoring macroeconomic stability. Yet, inflation rates remain high compared to the Central Bank’s single digit policy target range of 6\% to 9\%. It is unclear whether the high inflation rate is related to the renewed contributions of external and domestic public debt in the funding of the budget deficit, and if it is, what could be the direction of the causality? Therefore, this study examines the dynamic Granger-causality between public external and domestic debt and inflation in Nigeria using annual data for the period between 1986 and 2019. The study introduces interest rate and economic growth as intermittent variables alongside key variables to create a multivariate Granger-causality model to account for omission-of-variable bias. Using the Autoregressive Distributed Lag (ARDL) bounds testing approach to cointegration and the error correction model (ECM)-based Granger-causality test, the results show a distinct unidirectional causal flow from inflation to external debt. The findings further show a feedback relationship between domestic debt and inflation in the short run, but causality runs from domestic debt to inflation in the long run. The findings of this study have important policy implications.

References

Ahking, F. W. and Miller, S. M. (1985). The Relationship Between Government Deficits, Money Growth and Inflation. Journal of Macroeconomics, 7(4):447–467.

Ahmad, M. J., Sheikh, M. R., and Tariq, K. (2012). Domestic Debt and Inflationary Effects: An Evidence From Pakistan. International Journal of Humanities and Social Science, 2(18):256–263.

Aimola, A. U. and Odhiambo, N. M. (2018). A Review of Public and Private Debt Dynamics in Nigeria. Socioeconomica, 7(14):1–18.

Aimola, A. U. and Odhiambo, N. M. (2021). Public Debt and Inflation Nexus in Nigeria: An ARDL Bounds Test Approach. Cogent Economics & Finance, 9(1):1–20.

Anayochukwu, O. B. (2012). Fiscal Deficits and Inflation in Nigeria: The Causality Approach. International Journal of Scientific & Technology Research, 1(8):6–12.

Awe, A. A. and Olalere, S. (2012). The Nexus Between Budget Deficit and Inflation in the Nigerian Economy (1980–2009). Research Journal of Finance and Accounting, 3(10):78–92.

Bawa, S., Abdullahi, I. S., and Ibrahim, A. (2016). Analysis of Inflation Dynamics in Nigeria (1981–2015). Central Bank of Nigeria Journal of Applied Statistics, 7(1b):255– 276.

Bildirici, M. and Ersin, O. O. (2007). Domestic Debt, Inflation and Economic Crises: A Panel Cointegration Application to Emerging and Developed Economies. Applied Econometrics and International Development, 7(1):31–47.

Blanchard, O. (2004). Fiscal Dominance and Inflation Targeting: Lessons from Brazil. Working Paper 10389, National Bureau of Economic Research.

Blanchard, O. and Johnson, D. (2013). Macroeconomics. Pearson Education Limited England, UK, 6 edition.

Bua, G., Pradelli, J., and Presbitero, A. F. (2014). Domestic Public Debt in Low-Income Countries and Structure: Trends and Structure. Review of Development Finance, 4(1):1–19.

Budina, N. and Van Wijnbergen, S. (2000). Fiscal Deficits, Monetary Reform, and Inflation Stabilization in Romania. Policy Research Working Paper 2298, The World Bank Development Research Group, Macroeconomics and Growth.

Bwire, T. and Nampewo, D. (2014). Fiscal Deficits Financing: Implications for Monetary Policy Formulation in Uganda. Journal of Applied Finance and Banking, 4(2):125–138.

Cardoso, E. and Fishlow, A. (1990). External Debt, Budget Deficits, and Inflation. In Developing Country Debt and Economic Performance, Volume 2: Country Studies–Argentina, Bolivia, Brazil, Mexico, pages 318–334. University of Chicago Press.

Catao, L. A. and Terrones, M. E. (2005). Fiscal Deficits and Inflation. Journal of Monetary Economics, 52(3):529–554.

Central Bank of Nigeria (2003). Annual Statistical Bulletin 2003. Annual statistical bulletin, Central Bank of Nigeria. https://www.cbn.gov.ng/documents/Statbulletin.asp.

Central Bank of Nigeria (2010). Monetary Policy Review (MPR), Maiden Edition. https://www.cbn.gov.ng/OUT/2011/PUBLICATIONS/MFR/MPD/MONETARYPOLICYREVIEW.PDF.

Central Bank of Nigeria (2019). Annual Statistical Bulletin 2019. Annual statistical bulletin, Central Bank of Nigeria. https://www.cbn.gov.ng/documents/Statbulletin.asp.

Chimobi, O. P. and Igwe, O. L. (2010). Budget Deficit, Money Supply and Inflation in Nigeria. European Journal of Economics, Finance and Administrative Sciences, 19(5):52–60.

Christensen, J. E. (2004). Domestic Debt Markets in Sub-Saharan Africa. IMF Working Papers 46, International Monetary Fund.

Debt Management Office Nigeria (2007). Annual Report and Statement of Accounts 2007. Annual report, Debt Management Office Nigeria. https://www.dmo.gov.ng/publications/reports/dmo-annual-report-statement-of-accounts/1057-dmo-2007-annual-report/file.

Debt Management Office Nigeria (2016). Debt Management Strategy (DMS) 2016–2019. Strategy report, Debt Management Office Nigeria. https://www.dmo.gov.ng/publications/other-publications/debt-management-strategy/1288-nigeria-s-debt-management-strategy-2016-2019/file.

Debt Management Office Nigeria (2017). Annual Report and Statement of Accounts 2017. Annual report, Debt Management Office Nigeria. https://www.dmo.gov.ng/publications/reports/dmo-annual-report-statement-of-accounts/2503-2017-annual-report/file.

Debt Management Office Nigeria (2018). Annual Report and Statement of Accounts 2018. Annual report, Debt Management Office Nigeria. Accounts. https://www.dmo.gov.ng/publications/reports/dmo-annual-report-statement-of-accounts/3060-2018-annual-report/file.

Debt Management Office Nigeria (2020). Debt Management Strategy (DMS) 2020–2023. Strategy report, Debt Management Office Nigeria. https://www.dmo.gov.ng/publications/other-publications/debt-management-strategy/3469-nigeria-s-medium-term-debt-management-strategy-2020-2023/file.

Devapriya, T. N. and Ichihashi, M. (2012). How Does the Budget Deficit Affect Inflation in Sri Lanka. Idec discussion paper 2012, Hiroshima University.

Dissanayake, D. M. S. B. (2016). Identifying the Relationships Between Budget Deficit and Selected Macroeconomic Variables: A Study of Sri Lanka During the Postliberalization Era. In University of Sri Jayewardenepura, Sri Lanka, 13th International Conference on Business Management (ICBM).

Engle, R. F. and Granger, C. W. J. (1987). Co-Integration and Error Correction: Representation, Estimation, and Testing. Econometrica, 55(2):251–276.

Essien, S. N., Agboegbulem, N., Mba, M. K., Onumonu, O. G., et al. (2016). An Empirical Analysis of the Macroeconomic Impact of Public Debt in Nigeria. Central Bank of Nigeria Journal of Applied Statistics, 7(1a):125–145.

Ezirim, C. B., Mojekwu, K., Amuzie, A. E., and Muoghalu, M. I. (2016). The Relationship Between Domestic Public Debt Burden and Inflationary Pressures in Nigeria: Is There a Causal Relationship? International Journal of Business & Public Administration, 13(2):80–99.

Favero, C. A. and Giavazzi, F. (2004). Inflation Targeting and Debt: Lessons from Brazil. Working Paper 10390, National Bureau of Economic Research.

Feridun, M. and Adebiyi, M. A. (2006). Forecasting Inflation in Developing Economies: The Case of Nigeria. International Journal of Applied Econometrics and Quantitative Studies, 3(1):55–84.

Folorunso, B. A. (2013). Relationship Between Fiscal Deficit and Public Debt in Nigeria: An Error Correction Approach. Journal of Economics and Behavioral Studies, 5(6):346– 355.

Hanson, J. A. (2007). The Growth in Government Domestic Debt: Changing Burdens and Risks. Policy Research Working Paper 4348, The World Bank Economic Policy and Debt Department.

Inam, U. (2014). Budget Deficit and Inflation in Nigeria: An Empirical Analysis (1970–2010). Journal of Economics and Sustainable Development, 5(2):26–32.

Islam, R. and Wetzel, D. L. (1991). The Macroeconomics of Public Sector Deficits. Working Papers 672, The World Bank Policy Research Department.

Johansen, S. and Juselius, K. (1990). Maximum Likelihood Estimation and Inference on Cointegration–with Applications to the Demand for Money. Oxford Bulletin of Economics and Statistics, 52(2):169–210.

Karakaplan, M. U. (2009). The Conditional Effects of External Debt on Inflation. Journal of Social and Economic Research, 9(17):203–217.

Koluri, B. R. and Giannaros, D. S. (1987). Deficit and External Debt Effects on Money and Inflation in Brazil and Mexico: Some Evidence. Eastern Economic Journal, 13(3):243– 248.

Kwon, G., McFarlane, L., and Robinson, W. (2006). Public Debt, Money Supply, and Inflation: A Cross-Country Study and Its Application to Jamaica. IMF Working Papers 121, International Monetary Fund.

Lai, S.-L., Trang, L.-H., and Kuo, K.-C. (2015). Causal Relationship among Debt, GDP and Inflation in France. International Journal of Intelligent Technologies and Applied Statistics, 8(3):205–224.

Lutkepohl, H. (1982). Non-Causality Due to Omitted Variables. Journal of Econometrics, 19(2–3):367–378.

Moser, G. G. (1994). The Main Determinants of Inflation in Nigeria. IMF Working Papers 76, International Monetary Fund.

Murshed, M., Amin, S., and Chadni, M. H. (2018). Causality Analysis Between Inflation, Budget Deficit and Money Supply: Empirical Evidence From Bangladesh. World Journal of Social Sciences, 8(3):94–109.

Narayan, P. K. and Smyth, R. (2005). The Residential Demand for Electricity in Australia: An Application of the Bounds Testing Approach to Cointegration. Energy Policy, 33(4):467–474.

Narayan, P. K. and Smyth, R. (2006). Higher Education, Real Income and Real Investment in China: Evidence from Granger Causality Tests. Education Economics, 14(1):107–125.

Odhiambo, N. M. (2008). Financial Depth, Savings and Economic Growth in Kenya: A Dynamic Causal Linkage. Economic Modelling, 25(4):704–713.

Odior, E. S. and Arinze, S. (2017). The Dynamics of Inflation, Public Debt and Exchange Rate in Nigeria. Business and Economic (BizEcons) Quarterly, 1:19–34.

Oladipo, S. and Akinbobola, T. O. (2011). Budget Deficit and Inflation in Nigeria: A Causal Relationship. Journal of Emerging Trends in Economics and Management Sciences, 2(1):1–8.

Olaniyi, C. O. (2020). Application of Bootstrap Simulation and Asymmetric Causal Approach to Fiscal Deficit-Inflation Nexus. Global Journal of Emerging Market Economies, 12(2):123–140.

Onwioduokit, E. A. (1999). Fiscal Deficits and Inflation Dynamics in Nigeria: An Empirical Investigation of Causal Relationships. Central Bank of Nigeria Economic and Financial Review, 37(2):1–16.

Oseni, I. O. and Sanni, H. Y. (2016). Does Fiscal Deficit Granger Cause Impulsiveness in Inflation Rate in Nigeria? Acta Universitatis Danubius. Œconomica, 12(4):208–216.

Parida, P., Mallick, H., and Mathiyazhagan, M. K. (2002). Nexus between Fiscal Deficits, Money Supply and Price Level in India: A VAR Approach. Working Papers 104, The Institute for Social and Economic Change, Bangalore.

Pesaran, M. H., Shin, Y., and Smith, R. J. (2001). Bounds Testing Approaches to the Analysis of Level Relationships. Journal of Applied Econometrics, 16(3):289–326.

Sims, C. A. (2013). Paper Money. American Economic Review, 103(2):563–584.

Ssebulime, K. and Edward, B. (2019). Budget Deficit and Inflation Nexus in Uganda 1980–2016: A Cointegration and Error Correction Modeling Approach. Journal of Economic Structures, 8(1):1–14.

Taghavi, M. (2000). Debt, Growth and Inflation in Large European Economies: A Vector Auto-regression Analysis. Journal of Evolutionary Economics, 10:159–173.

Titus, G. S. (2013). Public Debt and Economic Growth: Evidence from Nigeria’s Data. West African Financial and Economic Review, 10(1):55–92.

Udoh, N. S. and Isaiah, A. S. (2018). A Predictive Model for Inflation in Nigeria. Central Bank of Nigeria Journal of Applied Statistics, 9(2):103–129.

United Nations Conference on Trade and Development (2016). Economic Development in Africa Report 2016: Debt Dynamics and Development Finance in Africa. Report, United Nations. https://unctad.org/webflyer/economic-development-africa-report-2016.

World Bank (2019). World Development Indicators 2019. http://databank.worldbank.org/data/source/world-development-indicators.

Yien, L. C., Abdullah, H., and Azam, M. (2017). Granger Causality Analysis Between Inflation, Debt and Exchange Rate: Evidence from Malaysia. International Journal of Academic Research in Accounting, Finance and Management Sciences, 7(1):189–196.

Zivot, E. and Andrews, D. W. K. (1992). Further Evidence on the Great Crash, the Oil-Price Shock, and the Unit-Root Hypothesis. Journal of Business & Economic Statistics, 10(3):251–270.

Published
2023-02-04
How to Cite
Aimola, A., & Odhiambo, N. (2023). External Debt, Domestic Debt and Inflation in Nigeria: A Multivariate Granger-Causality Test. Econometric Research in Finance, 7(2), 143-169. https://doi.org/10.2478/erfin-2022-0005
Section
Articles
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