HETEROGENEOUS CAPITAL SOURCES AND LONG-TERM GROWTH IN SMALL OPEN ECONOMIES: EVIDENCE FROM ECONOMIC COMMUNITY OF WEST AFRICAN STATES (ECOWAS)
Abstract
The heterogeneity of foreign capital sources has rekindled interest among researchers and policymakers in understanding their growth implications in small open economies. In this context, we provide new and valuable insights into how different sources of foreign capital contribute to economic growth in selected member countries (Ghana, Guinea, Liberia, Nigeria, Sierra Leone, Niger, Mali, Senegal, Cote d'Ivoire and Burkina Faso) of ECOWAS. Specifically, we employed the pooled mean group (PMG) estimator and the Hausman test to analyse panel data from the World Development Indicators of the World Bank and the International Monetary Fund (IMF) Financial Statistics. The findings revealed that FDI inflows are growth-enhancing. This indicates that FDI is a crucial source through which foreign capital amplifies GDP growth, thus reaffirming the need to maximise benefits, minimise risks, and promote sustainable growth. Similarly, the results showed that remittances and ODA inflows significantly bolstered annual GDP growth during the study period. This finding is not surprising given that remittances have been identified as a significant and stable flow of foreign capital, which directly supports households and stimulates consumption, thereby creating opportunities for economic growth. However, the results also showed that external debt hampers growth. The adverse effects of external debt on economic growth could be attributed to the growing challenge of debt servicing and principal repayments alongside poor institutional quality, including systemic corruption. Hence, we recommend that governments must ensure smart and targeted regional integration by fully implementing the ECOWAS protocols on the free flow of capital, including goods and services, to foster sustainable growth. Additionally, Central Banks and the West African Monetary Agency (WAMA) must synergise their efforts to reduce the cost of remittance transfers by providing low-cost and digital remittance channels for rapid and sustained growth in the ECOWAS region.
JEL: F30, F34, F35, F41. F43, O55
Article visualizations:
Keywords
Full Text:
PDFReferences
Abdouli, M., & Omri, A. (2021). Exploring the nexus among FDI inflows, environmental quality, human capital, and economic growth in the Mediterranean region. Journal of the Knowledge Economy, 12, 788-810. https://doi.org/10.1007/s13132-020-00641-5
Addi, H. M., & Abubakar, A. B. (2024). Investment and economic growth: do institutions and economic freedom matter?. International Journal of Emerging Markets, 19(4), 825-845. Retrieved from https://www.emerald.com/insight/content/doi/10.1108/ijoem-07-2021-1086/full/html
Adjei, M., Bo, Y., Nketiah, E., Adu-Gyamfi, G., & Obuobi, B. (2020). The effects of remittances on economic growth in West Africa. Journal of Human Resource and Sustainability Studies, 8(3), 312-329. Retrieved from https://www.oalib.com/research/6117071
Adusah-Poku, F. (2016). Which form of foreign capital inflows enhances economic growth? Empirical evidence in Sub-Saharan Africa. Asian Economic and Financial Review, 6(10), 557. Retrieved from https://archive.aessweb.com/index.php/5002/article/view/1506
Ajayi, K. J. (2024). Foreign direct investment and growth in ECOWAS: An ARDL Panel Analysis. Journal of Economics, Management and Trade, 30(12), 1-16. https://doi.org/10.9734/jemt/2024/v30i121254.
Ali, S., Jehan, Z., & Sherbaz, S. (2022). Foreign Capital Flows and Human Development in Developing Countries: Does Institutional Quality Matter?. Zagreb International Review of Economics & Business, 25(1), 1-19. Retrieved from https://hrcak.srce.hr/file/402967
Amir, M. Z. B., & Amir, M. K. B. (2024). Impact of remittances on economic growth in Africa: An econometric analysis. International Journal of Economics and Financial Issues, 14(1), 64-72. Retrieved from https://doi.org/10.32479/ijefi.14867
Asamoah, M. E., Alagidede, I. P., & Adu, F. (2021). Financial development, portfolio investments and the real economy in Africa. Economic Systems, 45(4). https://doi.org/10.1016/j.ecosys.2021.100872
Ato-Mensah, S., & Long, W. (2021). Impact of FDI on economic growth, employment, and poverty reduction in Ghana. Open Journal of Business and Management, 9(3), 1291-1296. http://dx.doi.org/10.4236/ojbm.2021.93069
Azam, M., & Feng, Y. (2022). Does foreign aid stimulate economic growth in developing countries? Further evidence in both aggregate and disaggregated samples. Quality & Quantity, 56(2), 533-556. https://doi.org/10.1007/s11135-021-01143-5
Bernanke, B. (2005). The global saving glut and the US current account deficit (No. 77). Board of Governors of the Federal Reserve System (US). Retrieved from https://www.federalreserve.gov/boarddocs/speeches/2005/200503102/
Bethencourt, C., & Perera‐Tallo, F. (2025). Foreign aid and corruption: Unveiling the obstacles to effective development. Southern Economic Journal, 91(3), 881-914. https://doi.org/10.1002/soej.12725
Blanchard, O., & Milesi-Ferretti, G. M. (2009). Global imbalances: Past, present, and future. IMF, forthcoming. Retrieved from http://fsaraceno.free.fr/Deb6_GlobalImbalances.pdf
Chang, T., & Caudill, S. B. (2005). Financial development and economic growth: the case of Taiwan. Applied economics, 37(12), 1329-1335. Retrieved from https://doi.org/10.1080/0003684042000338702
Chansombuth, S. (2023). Effectiveness analysis for Japanese ODA impact on growth: Empirical results from Laos. Journal of International Studies, 16(3), 117-126. Retrieved from https://www.jois.eu/?837,en_effectiveness-analysis-for-japanese-oda-impact-on-growth-empirical-results-from-laos
Chenery, H. B., & Bruno, M. (1962). Development alternatives in an open economy: the case of Israel. The Economic Journal, 72(285), 79-103. Retrieved from https://www.jstor.org/stable/2228618
Chenery, H. B., & Strout, A. M. (1968). Foreign assistance and economic development: Reply. The American Economic Review, 58(4), 912-916. Retrieved from https://www.jstor.org/stable/1813524
Dankyi, A. B., Abban, O. J., Yusheng, K., & Coulibaly, T. P. (2022). Human capital, foreign direct investment, and economic growth: Evidence from ECOWAS in a decomposed income level panel. Environmental Challenges, 9. https://doi.org/10.1016/j.envc.2022.100602
Didia, D., & Ayokunle, P. (2020). External debt, domestic debt and economic growth: The case of Nigeria. Advances in Economics and Business, 8(2), 85-94. Retrieved from https://www.hrpub.org/journals/article_info.php?aid=8834
Domar, E. D. (1946). Capital expansion, rate of growth, and employment. Econometrica, Journal of the Econometric Society, 14(2), 137-147. https://doi.org/10.2307/1905364
Dreher, A., & Langlotz, S. (2020). Aid and growth: New evidence using an excludable instrument. Canadian Journal of Economics/Revue canadienne d'économique, 53(3), 1162-1198. https://doi.org/10.1111/caje.12455
Edo, S., Osadolor, N. E., & Dading, I. F. (2020). Growing external debt and declining export: The concurrent impediments in economic growth of Sub-Saharan African countries. International Economics, 161, 173-187. https://doi.org/10.1016/j.inteco.2019.11.013
Fazli, P., & Abbasi, E. (2018). Analysis of the validity of Kuznets curve of energy intensity among D-8 countries: panel-ARDL approach. International Letters of Social and Humanistic Sciences, 81(1), 1-12. http://dx.doi.org/10.18052/www.scipress.com/ILSHS.81.1
Feldstein, M., & Horioka, C. (1980). Domestic saving and international capital flows. The Economic Journal, 90(358), 314-329. Retrieved from http://piketty.pse.ens.fr/files/FeldsteinHorioka1980.pdf
Githaiga, P. N., & Kilong’i, A. W. (2023). Foreign capital flow, institutional quality and human capital development in sub-Saharan Africa. Cogent Economics & Finance, 11(1). https://doi.org/10.1080/23322039.2022.2162689
Harrod, R. F. (1939). An essay in dynamic theory. The Economic Journal, 49(193), 14-33. Retrieved from http://piketty.pse.ens.fr/files/Harrod1939.pdf
Huang, B. N., Hwang, M. J., & Yang, C. W. (2008). Causal relationship between energy consumption and GDP growth revisited: a dynamic panel data approach. Ecological Economics, 67(1), 41-54. https://doi.org/10.1016/j.ecolecon.2007.11.006
Illo, F. M., Oladipo, O., & Azu, N. P. (2025). Impact of foreign direct investment on economic growth in Nigeria: Mediating role of institutional quality. Edelweiss Applied Science and Technology, 9(5), 53-68. https://doi.org/10.55214/25768484.v9i5.6776
Im, K. S., Pesaran, M. H., & Shin, Y. (2003). Testing for unit roots in heterogeneous panels. Journal of Econometrics, 115(1), 53-74. https://doi.org/10.1016/S0304-4076(03)00092-7
IMF (2016). Capital flows-review of experience with the institutional view. IMF Policy Paper. Retrieved from https://www.imf.org/en/Publications/Policy-Papers/Issues/2017/01/13/PP5081-Capital-Flows-Review-of-Experience-with-the-Institutional-View
Iritié, B. J. J., & Tiémélé, J. B. (2023). Foreign direct investment and economic growth in Côte d’Ivoire: An application of the bounds testing approach to cointegration. Cogent Economics & Finance, 11(1). https://doi.org/10.1080/23322039.2023.2223940
Jena, N. R., & Sethi, N. (2020). Foreign aid and economic growth in sub-Saharan Africa. African Journal of Economic and Management Studies, 11(1), 147-168. Retrieved from https://www.emerald.com/insight/content/doi/10.1108/ajems-08-2019-0305/full/html
Jirbo, B. V., Danladi, J., & Atayi, A. V. (2022). The analysis of trade openness, foreign direct investment and economic growth Economic Community of West African Countries (ECOWAS). American Journal of Multidisciplinary Research & Development (AJMRD), 4(01), 36-45. Retrieved from https://www.ajmrd.com/wp-content/uploads/2022/02/E413645.pdf
John, B. E., Lawal, M. T., Yaw, O., Danso-Mireku, O., & Mahesh, M. (2015). Remittance and economic growth; evidence from West Africa. EXCEL International Journal of Multidisciplinary Management Studies, 5(5), 73-83. Retrieved from https://www.academia.edu/12482198/REMITTANCE_AND_ECONOMIC_GROWTH_EVIDENCE_FROM_WEST_AFRICA
Kamguia, B., Tadadjeu, S., Miamo, C., & Njangang, H. (2022). Does foreign aid impede economic complexity in developing countries?. International Economics, 169, 71-88. https://doi.org/10.1016/j.inteco.2021.10.004
Kao, C. (1999). Spurious regression and residual-based tests for cointegration in panel data. Journal of Econometrics, 90(1), 1-44. https://doi.org/10.1016/S0304-4076(98)00023-2
Kitole, F. A. (2025). Assessing the role of foreign aid in promoting economic growth in Tanzania. Applied Economics Letters, 1-6. http://dx.doi.org/10.1080/13504851.2025.2455006
Lucas, R. E. (1990). Why doesn’t capital flow from rich to poor countries? American Economic Review, 80(2), 92–96. https://www.jstor.org/stable/2006549
Maruta, A. A., Banerjee, R., & Cavoli, T. (2020). Foreign aid, institutional quality and economic growth: Evidence from the developing world. Economic Modelling, 89, 444-463. https://doi.org/10.1016/j.econmod.2019.11.008
Mlambo, C. (2022). The impact of international portfolio investment on economic growth: the case of selected African states. International journal of research in business and social science, 11(10), 151-159. https://doi.org/10.20525/ijrbs.v11i10.2240
Narayan, P. K., & Smyth, R. (2008). Energy consumption and real GDP in G7 countries: new evidence from panel cointegration with structural breaks. Energy economics, 30(5), 2331-2341. https://doi.org/10.1016/j.eneco.2007.10.006
Ndugbu, M. O., Otiwu, K. C., & Uzowuru, L. N. (2021). The effect of foreign portfolio investment on economic growth in Nigeria. South Asian Journal of Social Studies and Economics, 11(3), 43-53. Retrieved from https://journalsajsse.com/index.php/SAJSSE/article/view/249
Nyasha, S., & Odhiambo, N. M. (2022). The impact of remittances on economic growth: Empirical evidence from South Africa. International Journal of Trade and Global Markets, 15(2), 254-272. Retrieved from https://ideas.repec.org/a/ids/ijtrgm/v15y2022i2p254-272.html
Ofori, P. E., & Grechyna, D. (2021). Remittances, natural resource rent and economic growth in Sub-Saharan Africa. Cogent Economics & Finance, 9(1). https://doi.org/10.1080/23322039.2021.1979305
Ozekhome, H. O. (2017). Foreign aid, Foreign direct investment and economic growth in ECOWAS countries: Are there diminishing returns in the aid-growth nexus?. West African Journal of Monetary and Economic Integration, 17(1), 61-84. Retrieved from https://www.econstor.eu/handle/10419/264237
Pesaran, M. H., & Smith, R. (1995). Estimating long-run relationships from dynamic heterogeneous panels. Journal of Econometrics, 68(1), 79-113. Retrieved from https://ideas.repec.org/a/eee/econom/v68y1995i1p79-113.html
Pesaran, M. H., Shin, Y., & Smith, R. P. (1999). Pooled mean group estimation of dynamic heterogeneous panels. Journal of the American Statistical Association, 94(446), 621-634. https://doi.org/10.2307/2670182
Prasad, E., Rajan, R., & Subramanian, A. (2007). The paradox of capital. Finance and development, 44(1), 10-15. Retrieved from https://www.imf.org/external/pubs/ft/fandd/2007/03/prasad.htm
Rahnama, M., Fawaz, F., & Gittings, K. (2017). The effects of foreign aid on economic growth in developing countries. The Journal of Developing Areas, 51(3), 153-171. Retrieved from https://www.jstor.org/stable/26416938
Slesman, L., Baharumshah, A. Z., & Wohar, M. E. (2015). Capital inflows and economic growth: Does the role of institutions matter?. International Journal of Finance & Economics, 20(3), 253-275. https://doi.org/10.1002/ijfe.1514
Solow, R. M. (1956). A contribution to the theory of economic growth. The Quarterly Journal of Economics, 70(1), 65-94. Retrieved from http://piketty.pse.ens.fr/les/Solow1956.pdf
Swan, T. W. (1956). Economic growth and capital accumulation. Economic Record, 32(2), 334-361. https://doi.org/10.1111/j.1475-4932.1956.tb00434.x
Tang, K. B., & Bundhoo, D. (2017). Foreign aid and economic growth in developing countries: Evidence from Sub-Saharan Africa. Theoretical Economics Letters, 7(05), 1473. https://doi.org/10.4236/tel.2017.75099
Tchekoumi, L. B., & Nya, P. D. (2023). Remittances and economic growth: What lessons for the CEMAC zone?. Cogent Economics & Finance, 11(1). https://doi.org/10.1080/23322039.2023.2191448
Tee, E., Larbi, F., & Johnson, R. (2017). The effect of foreign direct investment (FDI) on the Ghanaian economic growth. Journal of Business and Economic Development, 2(5), 240-246. Retrieved from https://sciencepublishinggroup.com/article/10.11648/j.jbed.20170204.16
Tefera, M. G., & Odhiambo, N. M. (2022). The impact of foreign aid on economic growth in Africa: Empirical evidence from low income countries. In Forum for Development Studies, 49I(2), 175-210. https://doi.org/10.1080/08039410.2022.2080760
World Bank (2014). Global economic prospects 2010: crisis, finance, and growth. Available on: https://documents.worldbank.org/en/publication/documents-reports/documentdetail/115101468337160604/global-economic-prospects-2010-crisis-finance-and-growth
Yahyaoui, I., & Bouchoucha, N. (2021). The long‐run relationship between ODA, growth and governance: An application of FMOLS and DOLS approaches. African Development Review, 33(1), 38-54. https://doi.org/10.1111/1467-8268.12489
DOI: http://dx.doi.org/10.46827/ejefr.v9i1.1962
Refbacks
- There are currently no refbacks.
Copyright (c) 2025 Johnbosco Chukwuma Ozigbu, Christopher Ifeanyi Ezekwe, Ebere Chimezie Onyewuchi

This work is licensed under a Creative Commons Attribution 4.0 International License.
The research works published in this journal are free to be accessed. They can be shared (copied and redistributed in any medium or format) and\or adapted (remixed, transformed, and built upon the material for any purpose, commercially and\or not commercially) under the following terms: attribution (appropriate credit must be given indicating original authors, research work name and publication name mentioning if changes were made) and without adding additional restrictions (without restricting others from doing anything the actual license permits). Authors retain the full copyright of their published research works and cannot revoke these freedoms as long as the license terms are followed.
Copyright © 2016 - 2026. European Journal of Economic and Financial Research (ISSN 2501-9430) is a registered trademark of Open Access Publishing Group. All rights reserved.
This journal is a serial publication uniquely identified by an International Standard Serial Number (ISSN) serial number certificate issued by Romanian National Library. All the research works are uniquely identified by a CrossRef DOI digital object identifier supplied by indexing and repository platforms. All the research works published on this journal are meeting the Open Access Publishing requirements and standards formulated by Budapest Open Access Initiative (2002), the Bethesda Statement on Open Access Publishing (2003) and Berlin Declaration on Open Access to Knowledge in the Sciences and Humanities (2003) and can be freely accessed, shared, modified, distributed and used in educational, commercial and non-commercial purposes under a Creative Commons Attribution 4.0 International License. Copyrights of the published research works are retained by authors.