Investigating the Impact of Oil Price Volatility on the Nexus between the Macroeconomy and the Banking System in Iraq: An MSH-VAR Approach

Mahmoud Kazem, Zuhair; Karimi Takanlou, Zahra; Asgharpur, Hossein

doi:10.48308/jep.2026.241974.1251

Investigating the Impact of Oil Price Volatility on the Nexus between the Macroeconomy and the Banking System in Iraq: An MSH-VAR Approach

Articles in Press

Document Type : Original Article

Authors

¹ PhD student in Economics, Faculty of Economics and Management, University of Tabriz, Tabriz, Iran

² Department of Economics, Faculty of economics and Management, University of Tabriz, Tabriz, Iran.

³ Full Professor, Department of Economics, Faculty of Economics and Management, University of Tabriz, Tabriz, Iran

10.48308/jep.2026.241974.1251

Abstract

This study investigates how oil-price volatility shapes the linkages between Iraq’s macroeconomic conditions and the banking sector within a Markov-Switching Heteroskedastic VAR (MSH-VAR) framework. Using quarterly data for 2004–2022, it assesses the effects of global oil-price fluctuations on the Banking Fragility Index (BFI), real GDP, and the exchange rate. The regime-switching structure captures asymmetric and state-contingent responses, separating relatively stable phases from more turbulent periods with higher volatility and persistence. The results indicate that oil-price shocks have a strong and statistically significant effect on real GDP, while their immediate impacts on banking fragility and the exchange rate are relatively limited. In the stable regime, Iraq’s economy exhibits a greater capacity to absorb positive oil price shocks, leading to smoother and more persistent adjustments in macroeconomic indicators. Conversely, in the unstable regime, negative oil shocks generate asymmetric and pronounced adverse effects, including contractions in GDP, increased banking fragility, and heightened exchange rate volatility. The impulse response functions corroborate these regime-specific patterns and highlight the vulnerability of Iraq’s oil-dependent economy to external shocks. These findings underscore the importance of strengthening banking supervision, establishing a financial stabilization fund, improving monetary-fiscal coordination, and promoting economic diversification to enhance resilience and long-term macro-financial stability.

Keywords

References

Abduh, M., & Baharoon, A. M. (2016). Oil Prices and Determinants of Islamic and Conventional Banks' Profitability in Saudi Arabia. Journal of Islamic economics, Banking and finance.https://doi.org/10.12816/0045548.

Albulescu, C. (2020). Bank financial stability, bank valuation and international oil prices: Evidence from listed Russian public banks. arXiv preprint arXiv:2004.12791. https://doi.org/10.48550/arXiv.2004.12791 .

Ali, D. J., Sargon, B., & Hadi, D. M. (2024). The impact of economy policy uncertainty and oil price shocks on G20 banks’ stock performance: Wavelet coherence and non-parametric causality in quantiles approach. Heliyon, 10(7).https://doi.org/10.1016/j.heliyon.2024.e28846.

Alodayni, S. (2016). Oil prices, credit risks in banking systems, and macro-financial linkages across GCC oil exporters. International Journal of Financial Studies, 4(4), 23.https://doi.org/10.3390/ijfs4040023,

Aloui, M., & Anis, J. (2023). The Dynamic Relation between the Oil Price Volatility, Stock Market, Exchange and Interest Rate in GCC Countries: Panel Vector Autoregressive (PVAR) Model. International Journal of Economics & Business Administration (IJEBA), 11(3), 114-128.https://doi.org/10.35808/ijeba/819.

Al-Zanganee, S. A. M. (2017). Impact of crude price volatility on levels of economic activity: Evidence from Iraq. In 7th International Scientific Forum, Isf (pp. 531-545).https://eujournal.org/index.php/esj/article/view/9225/8766.

Bouabid, A., & Ali, S. H. (2023). Measuring the Relationship Between Economic Crises and Investment Portfolios-A Sample Study of Iraqi Banks. International Journal of Professional Business Review: Int. J. Prof. Bus. Rev., 8(7), 28. https://doi.org/10.26668/businessreview/2023.v8i7.1889.

Bouazizi, T., Mrad, F., Hamida, A., & Nafti, S. (2022). Effects of conditional oil volatility on exchange rate and stock markets returns. International Journal of Energy Economics and Policy, 12(2), 53-71.https://doi.org/10.32479/ijeep.12826.

Boukhatem, J., & Djelassi, M. (2022). The bank-lending channel of monetary policy transmission in a dual banking system: empirical evidence from panel VAR modeling. Cogent Economics & Finance, 10(1), 2107765.https://doi.org/10.1080/23322039.2022.2107765.

Effendi, K. A. (2019). Oil prices and macroeconomic on the Islamic banking performance in OPEC member countries. International Journal of Energy Economics and Policy, 9(1), 200-204.https://doi.org/10.32479/ijeep.7098.

El-Chaarani, H. (2019). The impact of oil prices on the financial performance of banking sector in Middle East region. El-CHAARANI H.,(2019), The Impact of Oil Prices on Stocks Markets: New Evidence During and After the Arab Spring in Gulf Cooperation Council Economies, International Journal of Energy Economics and Policy, 9(4).https://doi.org/10.32479/ijeep.8075.

Farouq, I. S., & Sulong, Z. (2020). The impact of economic growth, oil price, and financial globalization uncertainty on financial development: Evidence from selected leading african countries. International Journal of Business, 7(5), 274-289.https://doi.org/10.18488/journal.62.2020.75.274.289.

Gelain, P., & Lorusso, M. (2024). Oil Price Fluctuations, US Banks, and Macroprudential Policy.https://doi.org/10.26509/frbc-wp-202233r.

Hamilton, J. D. (1983). Oil and the macroeconomy since World War II. Journal of political economy, 91(2), 228-248. https://doi.org/10.1086/261140.

Hamilton, J. D. (1989). A new approach to the economic analysis of nonstationary time series and the business cycle. Econometrica: Journal of the econometric society, 357-384. https://doi.org/10.2307/1912559.

Hesse, H., & Poghosyan, T. (2016). Oil prices and bank profitability: Evidence from major oil-exporting countries in the Middle East and North Africa. In Financial Deepening and Post-Crisis Development in Emerging Markets: Current Perils and Future Dawns (pp. 247-270). New York: Palgrave Macmillan US. https://doi.org/10.5089/9781451873672.001.

Jassim, R. Y., & Bekheet, H. N. (2022). The Effectiveness of Monetary Policy in Neutralizing Oil Price Fluctuations on the Gross Domestic Product in Iraq for the Period (1990-2019). Journal of Economics and Administrative Sciences, 28(132), 1-26.https://doi.org/10.33095/jeas.v28i132.2268.

Joseph, A., E, G., Radhakrishnan, R., & Jain, R. (2024). Macro-financial nexus: a systematic review on the impact of macroeconomic factors on bank stock returns. Cogent Economics & Finance, 12(1), 2354101.https://doi.org/10.1080/23322039.2024.2354101.

Jreisat, A., Rabbani, M. R., Omran, S., Al-Mohamad, S., & Bakry, W. (2022). An examination of the banking efficiency of the BRICS countries: A perspective derived from the oil price volatility. Cogent Economics & Finance, 10(1), 2142315. https://doi.org/10.1080/23322039.2022.2142315.

Kadhim, R. (2023). The Impact of Fluctuation of the International Oil Prices on the Public Budget of Iraq (An Analytical Study During the Period from (2001-2019). Estudios de economía aplicada, 41(2), 5. https://doi.org/10.25115/sae.v41i2.7022.

Kaffash, S., Aktas, E., & Tajik, M. (2020). The impact of oil price changes on efficiency of banks: An application in the Middle East oil exporting countries using SORM-DEA. Rairo-Operations Research, 54(3), 719-748. https://doi.org/10.1051/ro/2019009.

Khalaf, H. H., Al-Azzawi, A. A. H., & Taha, Z. E. (2023). Sustainability of the banking system and the role of monetary policy: Financial liberation in Iraq. Heritage and Sustainable Development, 5(1), 119.https://doi.org/10.37868/hsd.v5i1.175.

Khandelwal, P., Miyajima, K., & Santos, A. (2017). The impact of oil prices on the banking system in the Gulf Cooperation Council. Journal of governance & regulation, (6, Iss. 2), 32-47.https://doi.org/10.22495/jgr_v6_i2_p4.

Kibritçioglu, A. (2003). Monitoring banking sector fragility. The Arab Bank Review, 5(2), 51-66.

Krolzig, H. M. (1997). The markov-switching vector autoregressive model. In Markov-switching vector autoregressions: Modelling, statistical inference, and application to business cycle analysis (pp. 6-28). Berlin, Heidelberg: Springer Berlin Heidelberg. https://doi.org/10.1007/978-3-642-51684-9_2

Lanne, M., Lütkepohl, H., & Maciejowska, K. (2010). Structural vector autoregressions with Markov switching. Journal of Economic Dynamics and Control, 34(2), 121-131.https://doi.org/10.1016/j.jedc.2009.12.001.

Li, M. F., Hu, H., & Zhao, L. T. (2022). Key factors affecting carbon prices from a time-varying perspective. Environmental Science and Pollution Research, 29(43), 65144-65160.https://doi.org/10.1007/s11356-022-20376-x.

Lütkepohl, H., & Netšunajev, A. (2018). The relation between monetary policy and the stock market in Europe. Econometrics, 6(3), 36.https://doi.org/10.3390/econometrics6030036.

Mahdi, Z. A., & Muhsin, I. F. (2023). The Impact of Financial Crises on The Parties Involved in the Construction Project. In E3S Web of Conferences (Vol. 427, p. 04011). EDP Sciences. https://doi.org/10.1051/e3sconf/202342704011.

Mighri, Z. A., & Alsaggaf, M. I. (2019). Asymmetric Threshold Cointegration and Nonlinear Adjustment between Oil Prices and Financial Stress. International Journal of Energy Economics and Policy, 9(3), 87-105.https://www.econjournals.com/index.php/ijeep/article/view/7643.

Nain, Z., & Kamaiah, B. (2020). Uncertainty and effectiveness of monetary policy: a Bayesian Markov switching-VAR analysis. Journal of Central Banking Theory and Practice, 9, 237-265.https://doi.org/10.2478/jcbtp-2020-0030.

Ngepah, N., da Silva, M. L. A., & Saba, C. S. (2022). The impact of commodity price shocks on banking system stability in developing countries. Economies, 10(4), 91. https://doi.org/10.3390/economies10040091.

Rodhan, M. A. (2024). Macroeconomic impacts of oil price shocks: evidence from Iraq by using vector autoregressive model. International Journal of Energy Economics and Policy, 14(3), 162-170. https://doi.org/10.32479/ijeep.15681.

Shaiban, M. S., Li, D., & Hasanov, A. S. (2021). Energy and bank equity interactions. Frontiers in Energy Research, 9, 595060. https://doi.org/10.3389/fenrg.2021.595060.

Yokuş, T. (2024). Early warning systems for world energy crises. Sustainability, 16(6), 2284.https://doi.org/10.3390/su16062284.