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International Journal of Management and Business Development

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An Empirical Framework for Assessing the Relationship Between Capital Adequacy Ratios and Profit-Sharing Practices in Nigerian Islamic Banking Institutions: Evidence from Jaiz Bank and TAJ Bank (2023–2025)

DOI https://doi.org/10.55640/ijmbd-v03i08-01
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Nguyen Van An 1 , Tran Thi Mai 1 ,
4 Entrepreneurship & SME Development, Faculty of Business Administration, Hanoi University of Economics, Hanoi, Vietnam
4 Marketing Strategy & Consumer Behavior, Ho Chi Minh City University of Economics and Finance, Vietnam

Abstract

The evolution of Islamic banking in emerging economies has intensified scholarly and regulatory interest in understanding the interplay between capital adequacy and profit-sharing mechanisms. This study develops an empirical framework to assess the relationship between Capital Adequacy Ratios (CAR) and profit-sharing practices in Nigerian Islamic banking institutions, focusing on Jaiz Bank and TAJ Bank over the period 2023–2025. The research integrates regulatory capital theory, Islamic financial intermediation principles, and risk-sharing behavior to evaluate how capital buffers influence profit distribution structures.

Drawing on prior literature emphasizing risk exposure, capital regulation, and profit smoothing mechanisms in Islamic banks (Abedifar, Molyneux, & Tarazi, 2013), the study positions CAR as both a stability indicator and a behavioral determinant of profit-sharing intensity. The framework incorporates Basel III regulatory alignment, macro-financial stability conditions, and Islamic profit-and-loss sharing (PLS) sensitivity.

Methodologically, the paper proposes a structured econometric and conceptual model linking CAR, return on investment accounts, and profit equalization reserves. The findings suggest that higher capital adequacy levels reduce risk-sharing volatility while simultaneously influencing banks’ willingness to engage in equity-like financing structures. The study contributes to Islamic banking literature by offering a Nigeria-specific empirical framework aligned with global regulatory reforms and Islamic financial stability standards.

Keywords

Capital Adequacy Ratio, Islamic Banking, Profit-Sharing, Jaiz Bank, TAJ Bank

References

Abedifar, P., Molyneux, P., & Tarazi, A. (2013). Risk in Islamic banking. Review of Finance, 17(6), 2035–2096.
Addou, K. I., Boulanouar, Z., Anwer, Z., Bensghir, A., & Ramadilli Mohammad, S. M. (2024). The impact of Basel III regulations on solvency and credit risk-taking behaviour of Islamic banks. International Journal of Islamic and Middle Eastern Finance and Management, 17(5), 915–935.
Ahmed, H., & Khan, T. (2021). Displaced commercial risk and profit smoothing in Islamic banks. Journal of Islamic Accounting and Business Research, 12(3), 451–468.
Ahmed, H., & Khan, T. (2021). Profit smoothing and displaced commercial risk in Islamic banking. Journal of Islamic Accounting and Business Research, 12(4), 567–583.
Ayub, R., Alhabshi, S. M., & Abdullah Othman, A. H. (2023). Managing liquidity and profitability: The impact of Basel III on Islamic banks in Pakistan. International Journal of Islamic Economics and Finance Research, 6(2), 69–83.
Baita, A. J., et al. (2024). Islamic banking and financial development: Cross-country evidence. International Journal of Islamic Economics and Finance, 7(2), 19579.
Banna, H., Hassan, M. K., Ahmad, R., & Alam, M. R. (2022). Islamic banking stability amidst the COVID-19 pandemic: The role of digital financial inclusion. International Journal of Islamic and Middle Eastern Finance and Management, 15(2), 310–330.
Central Bank of Nigeria. (2024). Banking sector recapitalisation framework. CBN.
Ding, X., Haron, R., & Hasan, A. (2023). The influence of Basel III on Islamic bank risk. Journal of Islamic Monetary Economics and Finance, 9(1), 167–198.
Fahamsyah, M. H., Laila, N., Rakhmat, A. S., & Shabbir, M. S. (2023). Profit-loss sharing in Islamic banking: Global insights from a systematic review. Economica: Jurnal Ekonomi Islam, 14(2), 175–203.
Gazi, M. A. I., Karim, R., Senathirajah, A. R. B. S., Ullah, A. K. M., & Afrin, K. H. (2024). Bank-specific and macroeconomic determinants of profitability of Islamic Shariah-based banks. Economies, 12(3), 66.
Harkati, R., Alhabshi, S. M., & Kassim, S. (2020). Does the capital adequacy ratio influence the risk-taking behaviour of conventional and Islamic banks differently? Borsa Istanbul Review, 24(6), 1088–1100.
International Monetary Fund. (2024). Financial stability review: Emerging market risks and bank resilience. IMF Publications.
International Monetary Fund. (2024). Global financial stability report: Capital resilience in emerging markets. IMF.
Islamic Financial Services Board. (2023). Annual report 2023: Stability and capital adequacy in Islamic finance. Kuala Lumpur, Malaysia: IFSB.
Islamic Financial Services Board. (2023). Islamic financial services industry stability report 2023. IFSB.
Islamic Financial Services Board. (2025). IFSI Stability Report May 2025. IFSB.
Minarni, S., Nisa, S., & others. (2023). Capital adequacy ratio and profitability in Islamic banking: Cross-national evidence. International Journal of Islamic Finance, 3(2), 1–18.
Nuzulia, N., & Kasanah, R. (2024). Islamic banking risk management: Trends and insights. Journal of Islamic Finance and Accounting, 7(2), 115–128.
Olawole, B. Y., Olaniyi, L, R., & Akinbode, F. A. (2026). Islamic finance and environmental sustainability in Nigeria: A systematic analytical approach. International Journal Of Financial Research and Business Development, 11(7), 39–49.
Ozili, P. K. (2022). Banking stability, capital regulation, and financial performance in emerging markets. Journal of Financial Regulation and Compliance, 30(3), 345–360.
Ozili, P. K. (2022). Capital adequacy and financial stability in emerging markets. Emerging Markets Finance & Trade, 58(12), 3515–3532.
Suman, A., Supriani, I., Rajasa, M. A. I., & Anisa, V. N. (2026). An empirical analysis of profit-and-loss sharing financing in Indonesian Islamic banks. Jurnal Ekonomi & Keuangan Islam, 12(1), 91–111.
Taudlikhul Afkar, A. P. W., Wisudanto, L. R. N., & Hariawan, F. (2025). Profit sharing system in Islamic banking before, during, and after the COVID-19 pandemic. Journal of Accounting and Strategic Finance, 8(1), 50–73.
Uçkun, N., Ölçen, O., & Saktiawan, B. (2025). Research on capital adequacy ratio, governance and leverage in Islamic banking. Journal of Finance and Islamic Banking, 8(1), 1–20.

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