Sustainable Banking Disclosures, Credit Risk, and Profitability in Sub-Saharan Africa: A Sequential Explanatory SUR-ARDL Approach

This study examines the implementation of the Bank of Ghana’s (BoG) Sustainable Banking Principles (SBPs) and the Ghana Stock Exchange (GSE) ESG Disclosure Guidance Manual, evaluating their impact on credit risk and financial performance in Ghanaian commercial banking. Adopting a sequential explanatory mixed-methods design, the paper compares GCB Bank PLC—Ghana’s premier indigenous bank—with Ecobank Ghana PLC, a leading pan-African subsidiary. Using quarterly panel data spanning 2018 to 2025 (32 quarters) alongside semi-structured interviews (N=12) with chief risk officers, financial controllers, and sustainability leads, the study analyzes the relationship between ESG compliance scores, non-performing loan (NPL) ratios, and Return on Equity (ROE). Anchored in Stakeholder, Legitimacy, and Signaling theories, dynamic System-GMM panel regression and polynomial regression specifications were estimated. The empirical findings demonstrate that higher ESG compliance significantly reduces credit default risk (β_1=-0.042,p<0.05), with multinational subsidiaries capturing risk reductions more rapidly than domestic entities. Furthermore, a non-linear (U-shaped) relationship between ESG compliance and ROE is confirmed, establishing an inflection threshold at an ESG compliance score of approximately 63.3%. The study highlights operational bottlenecks faced by financial accountants adapting to the ICAG and IFRS S1/S2 climate disclosure roadmaps and provides practical policy recommendations for regulators (BoG, SEC Ghana) and bank executives across emerging Sub-Saharan markets.

Sustainable Banking Principles, ESG Reporting, Credit Risk, Non-Performing Loans, GCB Bank PLC, Ecobank Ghana PLC, IFRS S1/S2, System-GMM JEL Classification: G21, M41, Q56, O55

1. Aboagye, A. Q., Åhs, M., & Gunnarsson, L. (2024). Sovereign debt restructuring and commercial bank performance in Sub-Saharan Africa. Journal of African Economies, 33(2), 145–168. https://doi.org/10.1093/jae/ejad012 [Google Scholar] [Crossref]

2. Arellano, M., & Bond, S. (1991). Some tests of specification for panel data: Monte Carlo evidence and an application to employment equations. The Review of Economic Studies, 58(2), 277–297. https://doi.org/10.2307/2297968 [Google Scholar] [Crossref]

3. Bank of Ghana. (2019). Ghana Sustainable Banking Principles and Sector Guidance Notes. Bank of Ghana Supervisory Directives. https://www.bog.gov.gh [Google Scholar] [Crossref]

4. Barnett, M. L., & Salomon, R. M. (2012). Does it pay to be really good? Addressing the shape of the relationship between social and financial performance. Strategic Management Journal, 33(11), 1304–1320. https://doi.org/10.1002/smj.1980 [Google Scholar] [Crossref]

5. Blundell, R., & Bond, S. (1998). Initial conditions and moment restrictions in dynamic panel data models. Journal of Econometrics, 87(1), 115–143. https://doi.org/10.1016/S0304-4076(98)00009-8 [Google Scholar] [Crossref]

6. Braun, V., & Clarke, V. (2006). Using thematic analysis in psychology. Qualitative Research in Psychology, 3(2), 77–101. https://doi.org/10.1191/1478088706qp063oa [Google Scholar] [Crossref]

7. Cooke, T. E. (1992). The impact of size, stock exchange listing and industry type on disclosure in the annual reports of Japanese corporate entities. Accounting and Business Research, 22(87), 229–237. https://doi.org/10.1080/00014788.1992.9729440 [Google Scholar] [Crossref]

8. Creswell, J. W., & Creswell, J. D. (2018). Research design: Qualitative, quantitative, and mixed methods approaches (5th ed.). SAGE Publications. [Google Scholar] [Crossref]

9. DiMaggio, P. J., & Powell, W. W. (1983). The iron cage revisited: Institutional isomorphism and collective rationality in organizational fields. American Sociological Review, 48(2), 147–160. https://doi.org/10.2307/2095101 [Google Scholar] [Crossref]

10. Freeman, R. E. (1984). Strategic management: A stakeholder approach. Pitman. [Google Scholar] [Crossref]

11. Friede, G., Busch, T., & Bassen, A. (2015). ESG and financial performance: Aggregated evidence from more than 2000 empirical studies. Journal of Sustainable Finance & Investment, 5(4), 210–233. https://doi.org/10.1080/20430795.2015.1118917 [Google Scholar] [Crossref]

12. Friedman, M. (1970, September 13). The social responsibility of business is to increase its profits. The New York Times Magazine, 32–33, 122–126. [Google Scholar] [Crossref]

13. Ghana Stock Exchange. (2022). GSE ESG Disclosure Guidance Manual. Ghana Stock Exchange PLC. https://www.gse.com.gh [Google Scholar] [Crossref]

14. Haniffa, R. M., & Cooke, T. E. (2005). The impact of culture and governance on corporate social reporting. Journal of Accounting and Public Policy, 24(5), 391–430. https://doi.org/10.1016/j.jaccpubpol.2005.06.001 [Google Scholar] [Crossref]

15. Höck, A., Klein, C., Walmsley, A., & Zwergel, B. (2020). The impact of ESG ratings on corporate bond spreads. Journal of Asset Management, 21(3), 205–218. https://doi.org/10.1057/s41260-020-00157-1 [Google Scholar] [Crossref]

16. Nollet, J., Filis, G., & Mitrokostas, E. (2016). Corporate social responsibility and financial performance: A non-linear and disaggregated approach. Economic Modelling, 52, 400–407. https://doi.org/10.1016/j.econmod.2015.09.019 [Google Scholar] [Crossref]

17. Pesaran, M. H., Shin, Y., & Smith, R. J. (2001). Bounds testing approaches to the analysis of level relationships. Journal of Applied Econometrics, 16(3), 289–326. https://doi.org/10.1002/jae.616 [Google Scholar] [Crossref]

18. Pfeffer, J., & Salancik, G. R. (1978). The external control of organizations: A resource dependence perspective. Harper & Row. [Google Scholar] [Crossref]

19. Porter, M. E., & van der Linde, C. (1995). Toward a new conception of the environment-competitiveness relationship. Journal of Economic Perspectives, 9(4), 97–118. https://doi.org/10.1257/jep.9.4.97 [Google Scholar] [Crossref]

20. Roodman, D. (2009). How to do xtabond2: An introduction to difference and system GMM in Stata. The Stata Journal, 9(1), 86–136. https://doi.org/10.1177/1536867X0900900106 [Google Scholar] [Crossref]

21. Sharfman, M. P., & Fernando, C. S. (2008). Environmental risk management and the cost of capital. Strategic Management Journal, 29(6), 569–592. https://doi.org/10.1002/smj.678 [Google Scholar] [Crossref]

22. Suchman, M. C. (1995). Managing legitimacy: Strategic and institutional approaches. Academy of Management Review, 20(3), 571–610. https://doi.org/10.5465/amr.1995.9508080331 [Google Scholar] [Crossref]

23. Weber, O. (2017). Corporate sustainability assessments in the banking sector. Journal of Sustainable Finance & Investment, 7(2), 143–163. https://doi.org/10.1080/20430795.2016.1245341 [Google Scholar] [Crossref]

24. Weber, O., Scholz, R. W., & Michalik, G. (2010). Incorporating sustainability criteria into credit risk management. Business Strategy and the Environment, 19(1), 39–50. https://doi.org/10.1002/bse.637 [Google Scholar] [Crossref]

25. World Bank. (2022). Sub-Saharan Africa Financial Sector Review: Building Resilient Banking Systems in the Post-Pandemic Era. World Bank Group. [Google Scholar] [Crossref]

26. Zellner, A. (1962). An efficient method of estimating seemingly unrelated regressions and tests for aggregation bias. Journal of the American Statistical Association, 57(298), 348–368. https://doi.org/10.1080/01621459.1962.10480664 [Google Scholar] [Crossref]

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