Enflasyonun Türk Bankacılık Sektörünün Reel Özkaynak Karlılığı Üzerindeki Etkisi: ARDL Yaklaşımı

Abstract

Bu çalışma, enflasyonun Türk bankacılık sektöründe reel özkaynak kârlılığı (RROE) üzerindeki etkisini incelemekte ve sektörün enflasyonist koşullar altında reel kârlılığını sürdürebilme kapasitesine odaklanmaktadır. 2005–2024 dönemine ait üçer aylık veriler kullanılarak kısa ve uzun dönem ilişkileri ortaya koymak amacıyla Otoregresif Dağıtılmış Gecikmeler (ARDL) modeli, Sınır Testi ve Hata Düzeltme Modeli (ECM) uygulanmıştır. Bulgular, enflasyon ile RROE arasında istatistiksel olarak anlamlı ve negatif bir ilişki olduğunu ortaya koymaktadır; bu durum, artan enflasyonun reel kârlılığı aşındırdığını göstermektedir. Enflasyon ile reel kârlılık arasındaki ters yönlü ilişkinin temel nedeni, sektörün mevduat ve kredi faizlerinde yaşanan nominal artışlara paralel olarak net faiz marjını yeterince artıramamasıdır. Nominal göstergeler yerine reel kârlılığa odaklanan bu çalışma, makroekonomik baskı altında banka performansına dair daha doğru ve politika açısından anlamlı bir bakış açısı sunmaktadır.

Keywords

• Banka Karlılığı
• Enflasyon
• Özkaynak Karlılığı
• Net Faiz Marjı

The Impact of Inflation on The Real Return on Equity in the Turkish Banking Sector: An ARDL Approach

Abstract

This study examines the impact of inflation on the real return on equity (RROE) in the Turkish banking sector, emphasizing the sector’s ability to sustain real profitability under inflationary conditions. Using quarterly data from 2005 to 2024, the analysis employs the Autoregressive Distributed Lag (ARDL) model, Bounds Testing, and the Error Correction Model (ECM) to capture both short- and long-run dynamics. The results reveal a statistically significant and negative relationship between inflation and RROE, suggesting that rising inflation erodes real profitability. The inverse relationship between inflation and RROE is primarily driven by the sector’s inability to adjust its net interest margin in line with rising nominal deposit and loan rates. By focusing on real profitability rather than nominal indicators, this study offers a more accurate and policy-relevant perspective on bank performance under macroeconomic stress.

Keywords

• Bank profitability
• Inflation
• Return on Equity
• Net Interest Matgin

References

1. Adelepo, I. - Vichou, N. - Cheung, K. Y. (2022). “Capital, Liquidity, and Profitability in European Banks”. Journal of Corporate Accounting&Finance, (33), 23-35.
2. Adu, D. T. - Domfeh, K. O. - Denkyirah, E. K. (2016). “Is Inflation a Threat on Financial Sector Performance?”. European Journal of Business and Management , 8(33), 59-71.
3. Agarwal, I., - Baron, M. (2024). “Inflation and Disintermediation”. Journal of Financial Economics, 160, 1-116.
4. Alimi, R. (2014). “Inflation and Financial Sector Performance: The Case of Nigeria”. Timisoara Journal of Economics and Business, 7(1), 55-69.
5. Ariyadasa, C. – Selvanathan - E., Siddique, M. - Selvanathan, S. (2016). “On the Profitability of Commercial Banks: The Sri Lankan Case”. Applied Economics, 49 (21), 1-11.
6. B.D.D.K. (2020). B.D.D.K. Kararı, 18.04.2020-9000. Retrieved from B.D.D.K.: https://www.bddk.org.tr/Mevzuat/DokumanGetir/786 , (Accessed on July 10, 2025).
7. B.D.D.K. (2024a). B.D.D.K. Kararı, 11.01.2024/10825. Retrieved from B.D.D.K.: https://www.bddk.org.tr/Mevzuat/DokumanGetir/1214 , (Accessed on July 10, 2025).
8. B.D.D.K. (2024b). B.D.D.K. Kararı, 05.12.2024/11021. Retrieved from B.D.D.K.: https://www.bddk.org.tr/Mevzuat/DokumanGetir/1260 , (Accessed on July 10, 2025).

9. Bayrakçı, G. N. (2022). “Analysis of the Factors Affecting The Profitability of Banks In Turkey By Lasso Regression”. AYBU Business Journal, 2(2), 46-57.
10. Bergant, K. - Hakamada, M. - Kirti, D. - Mano, R. (2025). “Inflation and Bank Profits: Monetary Policy Trade-offs”. IMF Staff Discussion Notes, SDN/2025/00, International Monetary Fund, Retrieved from https://www.imf.org/en/Publications/Staff-Discussion-Notes/Issues/2025/02/10/Inflation-and-Bank-Profits-Monetary-Policy-Trade-offs-557542 , (Accessed on July 21, 2025).
11. Bilallli, A. - Sadiku, M. - Sadiku, L. (2024). “The Impact of Inflation on Financial Sector Performance: Evidence from OECD Countries”. Innovative and Economics Reserach Journal, 12(2), 263-276.
12. Bittencourt, M. (2011). “Inflation and Financial Development: Evidence from Brazil”. Economic Modelling, 28(1-2), 91-99.
13. Boyd, J., - Champ, B. (2003). “Inflation and Financial Market Performance: What Have We Learned in the Last Ten Years?”. Working Paper, 03-17, Federal Reserve Bank of Cleveland.
14. Buch, C. (2024). “Bank Profitability: A Mirror of the Past, Creating a Vision for the Future”. Retrieved from https://www.bankingsupervision.europa.eu/press/speeches/date/2024/html/ssm.sp241016~c532e5246d.en.html , (Accessed on July 21, 2025).
15. Choudhry, M. (2007). Bank Asset and Liability Management. John Wiley & Sons, Singapore.
16. De Nederlandsche Bank. (2022). “Inflation Can Affect Banks in Many Different Ways”. Retrieved from https://www.dnb.nl/en/general-news/background-2022/inflation-can-affect-banks-in-many-different-ways/ , (Accessed on July 11, 2025).
17. Farooq, M. - Khan, S. - Siddiqui, A. A. - Khan, M. T. - Khan, M. K. (2021). “Determinants of Profitability: A Case of Commercials Banks in Pakistan”. Humanities & Social Sciences Reviews, 9 (2), 1-13.
18. Feldstein, M. S. (1997). “The Costs and Benefits of Going from Low Inflation to Price Stability”. In C. D. Romer - D. H. Romer , Reducing Inflation: Motivation and Strategy, University of Chicago Press, Chicago, 123-166.
19. Gujarati, D. N., - Porter, D. C. (2009). Basic Econometrics. McGraw-Hill, Irwin, New York.
20. Gyamerah, I. A., - Amoah, B. (2015). “Determinants of Bank Profitability in Ghana”. International Journal of Accounting and Financial Reporting, 5(1), 173-187.
21. Islam, S., - Nishiyama, S.-I. (2016). “The Determinants of Bank Profitability: Dynamic Panel Evidence from South Asian Countries”. Journal of Applied Finance & Banking, 6(3), 77-97.
22. Jadah, H. M. - Alghanimi, M. H. - Al-Dahaan, N. S. - Al-Husainy, N. H. (2020). “Internal and External Determinants of Iraqi Bank Profitability”. Business Perspective, 15(2), 79-93.
23. Koch, T. W. - MacDonald, S. (2015). Bank Management. Cengage Learning, Boston.
24. Korytowski, M. (2018). “Banks’ Profitability Determinants in Post-crisis European Union”. Journal of Finance & Banking Studies, 7(1), 1-12.
25. Laporsek, S. - Svagan, B. - Stubelj, M. - Stubejl, I. (2025). “Profitability Drivers in European Banks: Analyzing Internal and External Factors in the Post-2009 Financial Landscape”. Risks, 13(2), 1-20.
26. Mashamba, T. - Chikutuma, C. N. (2023). “Determinants of Bank Profitability: Evidence from the Emerging Economy”. Corporate & Business Strategy Review, 4(4), 310-323.
27. Md. Noman, A.- Chowdhury, M. M. - Chowdhury, N. J. - Kabir, M. J. - Pervin, S. (2015). “The Effect of Bank Specific and Macroeconomic Determinants of Banking Profitability: A Study on Bangladesh”. International Journal of Business and Management, 10(6), 287-297.
28. Mishkin, F. (2022). The Economics of Money, Banking and Financial Markets. Pearson Education Limited, Essex, UK.
29. Mishkin, F. S. (2008). Does Stabilizing Inflation Contribute to Stabilizing Economic Activity?. Retrieved from Federal Reserve: https://www.federalreserve.gov/newsevents/speech/mishkin20080225a.htm , (Accessed on July 19, 2025).
30. OECD. (2025). OECD headline inflation declined to 4.0% in May 2025. Retrieved from https://www.oecd.org/en/data/insights/statistical-releases/2025/07/consumer-prices-oecd-updated-3-july-2025.html , (Accessed on July 14, 2025).
31. Oino, I. (2021). “Regulatory capital: Implications on credit creation and profitability”. Cogent Economics & Finance, 9(1), 1-15.
32. Ozatay, F. (2020). Finansal Krizler ve Türkiye. Doğan Kitap, İstanbul.
33. Ozili, P. (2021). “Bank Profitability Determinants: Comparing the United States, Nigeria and South Africa”. Munich Personal RePEc Archive, MPRA Paper No.105638, University Munich.
34. Rose, P. S. - Hudgins, S. C. (2013). Bank management & Financial services. McGraw-Hill Irvin, New York.
35. Salas, M. - Lamothe, P. - Delgado, E. - Fernandez-Miguleez, A. L. - Valcarce, L. (2024). “Determinants of Nonperforming Loans: A Global Data Analysis”. Computational Economics (64), 2695-2716.
36. Sarıkonavlık, V. - Koy, A. - Akkaya, M. - Yıldırım, H. H. - Kantar, L. (2020). Finans Biliminde Ekonometri Uygulamaları. Seçkin Yayıncılık San. ve Tic. A.Ş, İstanbul.
37. Sevüktekin, M. - Çınar, M. (2017). Ekonometrik Zaman Serileri Analizi. Dora Basın Yayın Ltd. Şti, Bursa.
38. Şahin, S. (2024). “2024 Yılının Üçüncü Çeyreğinde Türk Bankacılık Sektörünün Görünümü”. Retrieved from Ekonomim Gazetesi: https://www.ekonomim.com/kose-yazisi/2024-yilinin-ucuncu-ceyreginde-turk-bankacilik-sektorunun-gorunumu/781875 , (Accessed on July 16, 2025).
39. Şahin, S. (2025). “Takibe Düşen İhtiyaç Kredisi ve Kredi Kartı Borçları Toplumsal Bir Sorun Olmaya Doğru Evriliyor”. Retrieved from https://sinansahinphd.blogspot.com/2025/05/takibe-dusen-ihtiyac-kredisi-ve-kredi.html , (Accessed on July 16, 2025).
40. T.C.M.B. (2025). TCMB Faiz Oranları. Retrieved from https://www.tcmb.gov.tr/wps/wcm/connect/TR/TCMB+TR/Main+Menu/Temel+Faaliyetler/Para+Politikasi/Merkez+Bankasi+Faiz+Oranlari/1+Hafta+Repo , (Accessed on July 16, 2025).
41. T.C.M.B. (2022a). Zorunlu Karşılıklara İlişkin Basın Duyurusu (2022-24). Retrieved from https://www.tcmb.gov.tr/wps/wcm/connect/TR/TCMB+TR/Main+Menu/Duyurular/Basin/2022/DUY2022-24, (Accessed on July 16, 2025).
42. T.C.M.B. (2022b). Makroihtiyati Tedbirler Hakkında Basın Duyurusu (2022-36). Retrieved from https://www.tcmb.gov.tr/wps/wcm/connect/TR/TCMB+TR/Main+Menu/Duyurular/Basin/2022/DUY2022-36 , (Accessed on July 16, 2025).
43. Tomak, S. (2024). “Factors Affecting Bank Profitability in Türkiye”. International Journal of Business & Economic Studies , 6(4), 214-226.
44. Xu, T. - Hu, K. - Das, U. S. (2019). “Bank Profitability and Financial Stability”. IMF Working Paper, WP/19/5, International Monetary Fund.
45. Yüksel, S. - Mukhtarov, S. - Mammadov, E. - Özsarı, M. (2018). “Determinants of Profitability in the Banking Sector: An Analysis of Post-Soviet Countries”. Economies, 6 (41), 1-15.