Research Article

Effects of Total Public Debt Stock on Economic Growth in Nigeria: A Disaggregated Analysis

SALEH, Atiku Dambatta1*
1 Baze University Abuja, Nigeria
* Corresponding author: asdjllh@yahoo.co.uk
Published: Jun, 2025
DOI: 10.67894/bjf.2025.4i3btmtj
Pages: 47-64
Views: 17
Downloads: 5

Abstract

This study investigates the impact of public debt on economic growth in Nigeria, using the Debt Overhang Theory as a framework. The theory suggests that high debt levels can reduce growth by discouraging investment and causing fiscal strain. Quarterly data from 2007Q1 to 2024Q2 were sourced from the Debt Management Office (DMO), Central Bank of Nigeria (CBN), and National Bureau of Statistics (NBS). Real GDP (RGDP) was used to measure economic growth, while debt indicators included Multilateral Debt (MD), Bilateral Debt (BD), Commercial Debt (COMD), Banking Sector Debt (BSD), Non-Banking Sector Debt (NBD), and CBN Ways and Means Advances (CBNWM). Control variables were Exchange Rate (EXH), Inflation (INF), and Interest Rate (INT). An Augmented Dickey-Fuller (ADF) test confirmed all variables were stationary at first difference. Johansen cointegration test found five cointegrating relationships, indicating a stable long-term link. The long-run analysis of the vector error correction model (VECM) reveals that multilateral, bilateral, banking sector, non-banking sector debts, and Central Bank ways and means advances exert significant negative effects on economic growth, while exchange rate movements positively influence growth. The short-run results confirm a significant error correction mechanism, indicating gradual adjustment toward long-run equilibrium, with debt variables and inflation also playing notable roles in short-term GDP fluctuations. Also, Granger causality tests revealed predictive relationships between debt and growth variables, and confirmed the interconnectedness of Nigeria's debt system. The inverse roots of the AR polynomial confirmed model stability. The findings underscore the importance of prudent debt management and macroeconomic stability, suggesting that controlling inflation and exchange rate volatility alongside disciplined borrowing are essential for fostering sustainable economic growth. These insights provide valuable guidance for policymakers aiming to enhance economic performance through balanced fiscal and monetary strategies. 

Keywords

Public Debt Economic Growth Multilateral Debt Bilateral Debt Debt Overhang Theory

References

  1. Adam, C., & Bevan, D. (2005). Fiscal deficits and growth in developing countries. Journal of Public Economics, 89(4), 571–597.
  2. Adegbite, E. O., & Ayadi, F. S. (2010). The impact of Nigeria's external debt on economic development. International Journal of Business and Economic Perspectives, 5(1), 1–15.
  3. Ajayi, M. A., & Edewusi, D. G. (2020). Public debt and economic growth in Nigeria: Evidence from VECM approach (1982–2018). Journal of Economics and Policy Studies, 15(2), 45-61.
  4. Ajayi, S. I. (1991). Macroeconomic approach to external debt: The case of Nigeria (AERC Research Paper No. 8). African Economic Research Consortium.
  5. Ajayi, S. I., & Khan, M. S. (2000). External debt and capital flight in sub-Saharan Africa. IMF Institute.
  6. Akpan, U. F., Udoh, E. A. P., & Obiora, K. (2021). Monetary financing and inflation: The role of governance. IMF Working Paper No. 21/32. International Monetary Fund.
  7. Alfred, J. (2020). Government debt and economic growth: Evidence from Tanzania. African Journal of Economic Policy, 27(1), 88–106.
  8. Amassoma, D. (2011). External debt, internal debt and economic growth nexus in Nigeria: A causality analysis. Current Research Journal of Economic Theory, 3(4), 295–305.
  9. Babu, S., et al. (2015). Internal debt and per capita GDP growth: Evidence from East Africa Community countries (1990–2010). Economic Modelling, 48, 423–430.
  10. Bamidele, S. A., Idris, D., & Abubakar, M. T. (2023). Analysis of the impact of public domestic debt on private investment in Nigeria. Polac International Journal of Economic and Management Science, 9(2), 55–72.
  11. Barro, R. J. (1979). On the determination of the public debt. Journal of Political Economy, 87(5), 940–971.
  12. Barro, R. J. (1995). Inflation and economic growth. NBER Working Paper No. 5326. National Bureau of Economic Research.
  13. Broccolini, C., Lotti, G., & Mazzotta, F. (2019). Multilateral development banks and syndicated lending in developing countries. World Development, 113, 70–85. https://doi.org/10.1016/j.worlddev.2018.08.012
  14. Broccolini, C., et al. (2020). MDBs syndication and its effects on developing countries' bank inflows (1993–2017). International Finance Review, 15(4), 365–388.
  15. Central Bank of Nigeria. (2007). Central Bank of Nigeria Act, 2007.
  16. Checherita-Westphal, C., & Rother, P. (2012). The impact of high government debt on economic growth and its channels: An empirical investigation for the euro area. European Economic Review, 56(7), 1392–1405.
  17. Chinanuife, N., et al. (2018). Impact of public debt on public investment in Nigeria. African Journal of Economic Review, 12(3), 63–79.
  18. Chinaemerem, O. C., & Anayochukwu, O. B. (2013). Disaggregated foreign debt and economic growth in Nigeria: An empirical investigation. International Journal of Economics and Finance, 5(10), 48–58.
  19. Chinaemerem, O. C., & Anayochukwu, O. B. (2019). The impact of disaggregated foreign debt on Nigeria's economic development. Journal of Applied Finance & Banking, 9(6), 119-137.
  20. Chenaa, T. A., & Aziseh, F. I. (2024). Monetary policy autonomy in the CFA Franc zone: Comparative insights from Francophone and non-Francophone African economies. Journal of Economics, Management and Trade, 30(12), 97–120. https://doi.org/10.9734/jemt/2024/v30i121260
  21. Clements, B., Bhattacharya, R., & Nguyen, T. Q. (2003). External debt, public investment, and growth in low-income countries. IMF Working Paper No. 03/249. International Monetary Fund.
  22. Debt Management Office. (2025). Nigeria's total public debt as at March 31, 2025. Debt Management Office Website – https://www.dmo.gov.ng/debt-profile/total-public-debts/5363-nigeria-s-total-public-debt-stock-as-at-march-31-2025/file.
  23. Didia, D., & Ayokunle, P. (2020). External debt, domestic debt and economic growth in Nigeria. Advances in Economics and Business, 8(2), 85–94. https://doi.org/10.13189/aeb.2020.080202
  24. Duro, M., Tega, A., Sola, K., & Olanrewaju, O. (2020). Government borrowing and economic growth in Nigeria: A multiple regression analysis. International Journal of Economics and Financial Issues, 10(3), 150–160.
  25. Elbadawi, I. A., Ndulu, B. J., & Ndung'u, N. (1997). Debt overhang and economic growth in sub-Saharan Africa. In Z. Iqbal & R. Kanbur (Eds.), External finance for low-income countries (pp. 49–76). International Monetary Fund.
  26. Edward, C. F. & Amadi, J. C. (2024). Public debt and economic development in Nigeria: Impact assessment. International Journal of Economics and Financial Management, 9(5), 24-43.
  27. Engle, R. F., & Granger, C. W. J. (1987). Co-integration and error correction: Representation, estimation, and testing. Econometrica, 55(2), 251–276.
  28. Eze, O. R., & Ogiji, F. O. (2016). Debt and economic growth in Nigeria: The role of banking and non-banking debt. Journal of Economics and Sustainable Development, 7(10), 27–40.
  29. Eze, T. C., & Ukwueni, N. O. (2023). Impact of public debts accumulation on economic growth in Nigeria: Issues and implications for economic recovery. ABUAD Journal of Social and Management Sciences, 4(1), 105–129*. https://doi.org/10.53982/ajsms.2023.0401.07-j
  30. Farooq, F., Khan, R. E. A., & Akram, N. (2017). Public debt and economic growth in Pakistan: Disaggregated analysis. Pakistan Economic and Social Review, 55(1), 1–20.
  31. Fosu, A. K. (1996). The impact of external debt on economic growth in sub-Saharan Africa. Journal of Economic Development, 21(1), 93–118.
  32. Fseifes, M., Omet, G., & Bader, M. (2020). External debt and economic growth: The case of Jordan. International Journal of Economics and Financial Research, 6(2), 28–35.
  33. Gachungal, D., & Kuso, A. (2018). External debt and economic growth in sub-Saharan Africa: A GMM approach. Journal of African Development, 20(2), 103–121.
  34. Gimba, J. T., Eche, G. E. & Awogbemi, C. A. (2024), Effect of External Debt on Inflation Rate in Nigeria. Journal of Advanced Research and Multidisciplinary Studies 4(4), 29-44.
  35. Hasan, I. (2015). Foreign debt and economic growth in Turkey: Evidence from core regression. Journal of Economic Cooperation and Development, 36(2), 97–118.
  36. Idowu, A., Oyebanji, O., & Ogunleye, T. (2018). Domestic borrowing and macroeconomic performance in Nigeria: A SVAR approach. Nigerian Journal of Economic Studies, 14(1), 23–40.
  37. Inyang, E. J., & Effiong, E. A. (2020). External debt and Nigeria's economic growth: An ARDL and ECM approach (1981–2019). International Journal of Development and Economic Sustainability, 8(4), 45–59.
  38. Iyoha, M. A. (1999). External debt and economic growth in sub-Saharan African countries: An econometric study. African Economic Research Consortium (AERC) Research Paper No. 90.
  39. Johansen, S. (1988). Statistical analysis of cointegration vectors. Journal of Economic Dynamics and Control, 12(2–3), 231–254.
  40. Krugman, P. (1988). Financing vs. forgiving a debt overhang. Journal of Development Economics, 29(3), 253–268.
  41. Maithreerathna, W., Perera, S., & Jayawardena, C. (2019). Domestic debt and economic growth in Sri Lanka: Evidence from SVAR. South Asian Journal of Economics, 5(2), 55–72.
  42. Mbah, S. A., Umunna, G., & Agu, A. O. (2016). Foreign loans and economic growth in Nigeria: An ARDL analysis (1970–2013). International Journal of Business and Social Science, 7(9), 120–131.
  43. Mothibi, G. (2019). The relationship between foreign debt and economic growth in South Africa: An ARDL approach (1980–2018). African Development Review, 31(3), 310–322.
  44. Mun, H. W., & Ismail, R. (2015). Public debt and financial development in Malaysia: An ARDL approach. Journal of Economics and Finance, 29(3), 42–54.
  45. Nwala, M. N. & Saleh, A. D. (2021). A disaggregated analysis of the effect of domestic public debt on economic growth in Nigeria. Journal of Economics and Allied Research (JEAR), 6(4). 14-29.
  46. Nwannebuike, O. S. (2016). External debt and economic growth in Nigeria: Co-integration and error correction analysis. Journal of Economics and Sustainable Development, 7(16), 12-20.
  47. Nwaeke, L. I., & Korgbeelo, B. (2016). Public debt and economic growth in Nigeria: The role of banking and non-banking debt. Journal of Business and Management, 18(2), 91–100.
  48. Nzeh, Innocent Chile. (2020). Public debt and economic growth in Nigeria: Investigating the optimal threshold level (1981–2018). Asian Development Policy Review, 8(2), 112–127. https://doi.org/10.18488/journal.107.2020.82.112.127
  49. Odubuasi, F. C., Uzoka, F. A., & Anichebe, A. S. (2018). External loans and economic growth in Nigeria: An ECM analysis (1981–2017). International Journal of Academic Research in Business and Social Sciences, 8(10), 152–170.
  50. Ohiamu, I. (2020). Debt-growth nexus in Nigeria: Evidence from ARDL bounds testing. Journal of Public Finance and Debt Management, 4(1), 33–49.
  51. Omodero, C. O., Okafor, F. O., & Nwachukwu, O. (2021). Household debt and economic growth in Nigeria: An econometric analysis (2001–2019). Journal of Economics and Public Policy, 6(2), 67–83.
  52. Onyeiwu, C. (2012). Domestic debt and investment crowding out: Evidence from Nigeria. Research Journal of Finance and Accounting, 3(8), 57–66.
  53. Paul, E. (2017). Nigeria's foreign loans and economic growth: An error correction model (1985-2015). International Journal of Economics, Commerce and Management, 5(7), 121–135.
  54. Pattillo, C., Poirson, H., & Ricci, L. A. (2002). External debt and growth. IMF Working Paper No. 02/69. International Monetary Fund.
  55. Rajhi, T. (2019). Public debt and economic growth in MENA countries: An empirical analysis. Middle East Economic Review, 31(1), 1–17.
  56. Reinhart, C. M., & Rogoff, K. S. (2010). Growth in a time of debt. American Economic Review, 100(2), 573–578. https://doi.org/10.1257/aer.100.2.573
  57. Republic of Nigeria. (2007). Constitution of the Federal Republic of Nigeria.
  58. Rostow, W. W. (1956). The stages of economic growth: A non-communist manifesto. Cambridge University Press.
  59. Rostow, W. W. (1971). Politics and the stages of growth: A non-communist manifesto. Cambridge University Press.
  60. Saleh, A. D. (2025). An empirical analysis of the impact of bilateral debt on economic growth in Nigeria. ASDU International Journal of Applied Economics, Finance and Management, 10(2), 700-719.
  61. Saleh, A. D. (2025). Impact of multilateral debt stock on economic growth in Nigeria: Evidence from Vector Error correction Techniques. International Journal of Research and Innovation in Social Sciences, 9(15), 765-778.
  62. Saleh, A. D. (2025). Implication of foreign commercial debt financing on debt servicing in Nigeria: A macro-financial analysis. ABU Journal of Global Advancements in Finance.
  63. Shilling, D. (2021). Banking debt and economic cycles: Global lessons from recessions. Journal of Economic Perspectives, 35(1), 25–47.
  64. Silva, A. (2018). Public and private external debt and growth in Portugal (1999–2014). Portuguese Economic Journal, 17(2), 145–164.
  65. Silva, A. (2020). The impact of foreign loans on growth in Portugal: A quarterly analysis (1999-2019). Journal of International Economics and Policy, 13(1), 55–72.
  66. Soludo, C. C., Ogbu, O., & Chang, H. J. (2004). The debt trap in Nigeria: The political economy of external borrowing. Nigerian Economic Summit Group.
  67. Stiglitz, J. E. (2003). Globalization and its discontents. W. W. Norton & Company.
  68. Tuncer, I. (2019). External debt and economic growth in Turkey: A time series analysis (1970-2016). Turkish Economic Review, 6(2), 101–118.
  69. Ujuju, C., & Oboro, G. (2017). Public debt structure and economic growth in Nigeria (1990-2015). International Journal of Economics and Business, 5(3), 90–108.
  70. Van Bon Nguyen. (2022). The crowding-out effect of public debt on private investment in developing economies and the role of institutional quality. Seoul Journal of Economics, 35(4), 403–424. https://doi.org/10.22904/sje.2022.35.4.003
  71. World Bank. (2020). Nigeria economic report 2020: Domestic debt and economic growth. World Bank Publications.
  72. Zaheer, S., Khaliq, A., & Rafiq, M. (2019). Public borrowing and private credit: Evidence from Pakistan using VAR. Pakistan Development Review, 58(4), 321–340.
How to Cite

Dambatta, S. A. (2025). Effects of Total Public Debt Stock on Economic Growth in Nigeria: A Disaggregated Analysis. Bayero University Journal of Finance, 2(1), 47-64. https://doi.org/10.67894/bjf.2025.4i3btmtj

S. A. Dambatta, "Effects of Total Public Debt Stock on Economic Growth in Nigeria: A Disaggregated Analysis," Bayero University Journal of Finance, vol. 2, no. 1, pp. 47-64, June 2025. doi: 10.67894/bjf.2025.4i3btmtj

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