e-ISSN 2518-1181
DOI 10.33146/2518-1181
Online Media ID R40-06293
← Back Published: 30.12.2025

The Effect of Audit Quality and Internal Audit Structures on a Firm’s Performance: Empirical Study of Companies in the Jakarta Islamic Index

Authors

Kamilah Sa'diah University of Binaniaga Indonesia, Bogor, Indonesia ORCID 0000-0001-5175-9787
Vera Clara Simanjuntak University of Binaniaga Indonesia, Bogor, Indonesia ORCID 0009-0001-9714-8890
Yuni Andri Ekawati University of AlWashliyah, Medan, Indonesia ORCID 0009-0009-9089-8662
Siti Wardah Pratidina Nasution University of AlWashliyah, Medan, Indonesia ORCID 0000-0003-1528-378X
Winda Wardhani University of AlWashliyah, Medan, Indonesia ORCID 0009-0005-4488-6493

DOI:

https://doi.org/10.33146/2518-1181-2025-4(110)-121-132

Abstract

Audit plays a crucial role in enhancing corporate governance transparency. In the context of emerging markets, especially Indonesia, where specific Islamic finance requirements apply, this control mechanism is of particular importance. The quality of audit services and the reliability of internal control structures have a direct impact not only on financial reporting but also on the overall performance of the firm. This study aims to empirically analyse and quantify how these two key elements affect the performance of companies included in the Jakarta Islamic Index, providing valuable information for investors, regulators and business leaders seeking sustainable development within the framework of Sharia principles. Audit quality measurement uses audit quality metric scores (AQMS). This research employs a causal comparative design with a quantitative approach. The study sample comprises 24 companies, and the data span the period from 2017 to 2024. Data were analysed using the data panel regression, as determined by the Lagrange Multiplier test. The results reveal that audit quality has a negative and significant effect on a firm’s performance. In contrast, internal audit structures, measured by the frequency of internal audit meetings, have a negative but insignificant effect. However, audit quality and internal audit structures explain only 7.88% of the variance in a firm’s performance, with the remaining 92.12% attributed to other factors not involved in this study. This situation arises for several reasons. The largest part of the firm’s performance indicators (the same 92.12%) often depends on macroeconomic and market conditions that are not the subject of the audit (industry dynamics, economic cycle, competitive environment). The role of audit is to ensure transparency, reduce risks and comply with rules. It is not a driving force for innovation, sales or operational efficiency. The impact of an audit is often indirect, rather than direct. Thus, the result of 7.88% does not mean that the audit is unimportant. It means that fundamental economic and management decisions (such as strategy, marketing, innovation, and operations) have a significantly greater impact on the firm’s performance than control and reporting mechanisms. Companies must place a greater emphasis on the quality of internal audits and integrated governance strategies to ensure that audits make a meaningful contribution to long-term performance.

Keywords

audit quality, Audit Quality Metric Score, internal audit structures, frequency of internal audit meetings, firm’s performance, Tobin’s Q
References
  1. Ado, A. B., Rashid, N., Mustapha, U. A., & Ademola, L. S. (2020). The Impact of Audit Quality on the Financial Performance of Listed Companies Nigeria. Journal of Critical Reviews, 7(9), 37–42. Retrieved from: https://jcreview.com/archives/volume-7/issue-9/3786
  2. Ahmeti, A., Ahmeti, S., & Aliu, M. (2022). Effect of Internal Audit Quality on the Financial Performance of Insurance Companies: Evidence from Kosovo. International Journal of Applied Economics, Finance and Accounting, 12(2), 63–68. https://doi.org/10.33094/ijaefa.v12i2.551
  3. Almaqoushi, W., & Powell, R. (2021). Audit Committee Quality Indices, Reporting Quality and Firm Value. Journal of Business Finance & Accounting, 48(1-2), 185–229. https://doi.org/10.1111/jbfa.12478
  4. Al-Matari, E., Al-Swidi, A., & Fadzil, F. B. (2014). The Effect of the Internal Audit and Firm Performance: A Proposed Research Framework. International Review of Management and Marketing, 4(1), 34–41. Retrieved from: http://www.econjournals.com/index.php/irmm/article/download/669/pdf
  5. Ammar Zahid, R., Khan, M. K., Anwar, W., & Maqsood, U. (2022). The Role of Audit Quality in the ESG-Corporate Financial Performance Nexus: Empirical Evidence from Western European Companies. Borsa Istanbul Review, 22(Supplement 2), S200–S212. https://doi.org/10.1016/j.bir.2022.08.011
  6. Bamford, C. E., Hoffman, A. N., Wheelen, T. L., & Hunger, J. D. (2024). Strategic Management and Business Policy: Toward Global Sustainability (16th, Global Ed.). London: Pearson Education Limited. Retrieved from: https://api.pageplace.de/preview/DT0400.9781292727417_A47132576/preview-9781292727417_A47132576.pdf
  7. Behn, B. K., Choi, J.‐H, & Kang, T. (2008). Audit Quality and Properties of Analyst Earnings Forecasts. The Accounting Review, 83(2), 327–349. https://doi.org/10.2308/accr.2008.83.2.327
  8. Chalmers, K., Hay, D., & Khlif, H. (2019). Internal Control in Accounting Research: A Review. Journal of Accounting Literature, 42, 80–103. https://doi.org/10.1016/j.acclit.2018.03.002
  9. Chinemerem, I. V., Aminu, I., & Ene, J. C. (2025). Impact of Audit Quality on Financial Performance of Listed Consumer Goods Companies in Nigeria. Kashere Journal of Management Sciences, 8(2), 31–43. Retrieved from: https://journals.fukashere.edu.ng/index.php/kjms/article/download/852/677/2845
  10. Chung, D. Y., & Lindsay, W. (1988). The Pricing of Audit Services: The Canadian Perspective. Contemporary Accounting Research, 5(1), 19–46. https://doi.org/10.1111/j.1911-3846.1988.tb00693.x
  11. DeAngelo, L. E. (1981). Auditor Size and Audit Quality. Journal of Accounting and Economics, 3(3), 183–199. https://doi.org/10.1016/0165-4101(81)90002-1
  12. Dzikrullah, A., Harymawan, I., & Ratri, M. C. (2020). Internal Audit Functions and Audit Outcomes: Evidence from Indonesia. Cogent Business & Management, 7(1), 1750331. https://doi.org/10.1080/23311975.2020.1750331
  13. Daromes, F. E., & Ng, S. (2022). Firm Value Effect of Managerial Ability and External Control Mechanism: Mediation Role of Financial Reporting Quality. Proceedings of the 4th Asia Pacific Management Research Conference (APMRC 2022) (pp. 284–300). Atlantis Press. https://doi.org/10.2991/978-94-6463-076-3_21
  14. El-Dyasty, M. M., & Elamer, A. A. (2021). The Effect of Auditor Type on Audit Quality in Emerging Markets: Evidence from Egypt. International Journal of Accounting and Information Management, 29(1), 43–66. https://doi.org/10.1108/IJAIM-04-2020-0060
  15. Eze, N. M. (2016). Changes and Challenges of Auditing in 21st Century: The Nigerian Experience. International Journal of Finance and Accounting, 5(1), 37–45. Retrieved from: http://article.sapub.org/10.5923.j.ijfa.20160501.05.html
  16. Ghaleb, B. A., Kamardin, H., & Al-Qadasi, A. (2020). Internal Audit Function and Real Earnings Management Practices in an Emerging Market. Meditari Accountancy Research, 28(6), 1209–1230. https://doi.org/10.1108/MEDAR-02-2020-0713
  17. Ghozali, I., & Ratmono, D. (2017). Analisis Multivariat dan Ekonometrika: Teori, Konsep, dan Aplikasi dengan EViews 10 (Cetakan II) (2nd Ed.). (A. Tejokusumo, Ed.) Semarang: Badan Penerbit Universitas Diponegoro.
  18. Gujarati, D. N. (2013). Dasar-Dasar Ekonometrika (5th Ed.). (R. Mangunsong, Ed.) Jakarta: Salemba Empat.
  19. Hazaea, S. A., Tabash, M. I., Khatib, S. F., Zhu, J., & Al-Kuhali, A. A. (2020). The Impact of Internal Audit Quality on Financial Performance of Yemeni Commercial Banks: An Empirical Investigation. Journal of Asian Finance, Economics and Business, 7(11), 867–875. https://doi.org/10.13106/jafeb.2020.vol7.no11.867
  20. Herusetya, A., Rossieta, H., & Veronica, S. (2013). Multi-Dimensional Audit Quality, Regulation, and Earnings Management to Meet Earnings Benchmarks: Evidence from Indonesia. International Conference on Business, Economics, and Accounting, 20-23 March 2013 (pp. 20–23). Bangkok, Thailand: CAAL – International Education and Organizer. Retrieved from: http://www.caal-inteduorg.com/ibea2013/ejournal/058---Antonius_H&Hilda_Veronica_NPS---Multi__Dimensional_Audit_Quality.pdf
  21. Husain, T., & Syniuta, A. (2020). Audit Fee and “The Big-Four”: A Comparative Study at Initial Public Offerings (IPO) Companies in Indonesia Stock Exchange (IDX). Multidisciplinary European Academic Journal, 2(4), 1–7. Retrieved from: https://www.syniutajournals.com/index.php/MEAJ/article/view/158
  22. IIA Indonesia. (2020). The IIA’s Internal Audit Competency Framework. Jakarta: Institute of Internal Auditors, Indonesia.
  23. Ivungu, J. A., Anande, K. G., & Ogirah, A. U. (2019). Effect of Audit Quality on Firm Performance: A Review of Literature. International Journal of Advanced Academic Research, 5(6), 34–48. Retrieved from: https://www.ijaar.org/articles/Volume5-Number6/Social-Management-Sciences/ijaar-sms-v5n6-jun19-p17.pdf
  24. Lang, L. H., & Stulz, R. M. (1994). Tobin’s Q, Corporate Diversification, and Firm Performance. Journal of Political Economy, 102(6), 1248-1280. https://doi.org/10.1086/261970
  25. Monametsi, G., & Agasha, E. (2020). Audit Quality and Firm Performance: Evidence from Botswana and Uganda. Journal of Accounting, Finance and Auditing Studies, 6(4), 79–95. https://doi.org/10.32602/jafas.2020.029
  26. OCC. (2019). Comptroller’s Handbook: Internal and External Audits (Ver. 1.1 Ed.). Washington, DC: Office of the Comptroller's of the Currency. Retrieved from: https://www.occ.treas.gov/publications-and-resources/publications/comptrollers-handbook/files/internal-external-audits/pub-ch-audits.pdf
  27. Odunko, S. N. (2022). Internal control and firm performance: Evidence from selected firms in Nigeria (2015-2020). International Journal of Innovative Finance and Economics Research, 10(1), 68–80. Retrieved from: https://www.seahipublications.org/wp-content/uploads/2024/06/IJIFER-M-6-2022.pdf
  28. Ofoegbu, C., & Ndubuisi, C. (2024). Audit Quality and Financial Performance of Listed Consumer Goods Companies in Nigeria. Journal of Global Accounting, 10(3), 39–73. Retrieved from: https://journals.unizik.edu.ng/joga/article/view/4727/3864
  29. OJK RI. (2015). Salinan Peraturan Otoritas Jasa Keuangan Nomor 56/POJK.04/2015 tentang Pembentukan dan Pedoman Penyusunan Piagam Unit Audit Internal. Jakarta: Financial Services Authority. Retrieved from: https://tinyurl.com/5h6zyyek
  30. PCAOB. (2015). Concept Release on Audit Quality Indicators, PCAOB Release No.2015-005. Washington, DC: Public Company Accounting Oversight Board. Retrieved from: https://pcaobus.org/rulemaking/docket_041/release_2015_005.pdf
  31. Picciano, A. G. (2004). Educational Research Primer (Continuum Research Methods) (Illustrated Ed.). Bloomsbury Publishing.
  32. Qu, X., Liang, B., & Chen, H. H. (2020). Research on the Value-added Role of Internal Audit. International Journal of Higher Education Teaching Theory, 1(4), 211–213. Retrieved from: http://www.acadpubl.com/Papers/Vol%201,%20No%204%20(IJHETT%202020).pdf
  33. Sawyer, L. B., Dittenhofer, M. A., Scheiner, J. H., Graham, A., & Makosz, P. (2005). Sawyer's Internal Auditing: The Practice of Modern Internal Auditing (5th Ed.). Florida: The Institute of Internal Auditors.
  34. Singh, S., Tabassum, N., Darwish, T., & Batsakis, G. (2018). Corporate Governance and Tobin's Q as a Measure of Organizational Performance. British Journal of Management, 29(1), 171–190. https://doi.org/10.1111/1467-8551.12237
  35. Tandiontong, M. (2016). Kualitas Audit dan Pengukurannya. Bandung: Alfabeta.
  36. Watkins, A. L., Hillison, W., & Morecroft, S. E. (2004). Audit quality: A synthesis of theory and empirical evidence. Journal of Accounting Literature, 23, 153–193.
  37. Wernerfelt, B., & Montgomery, C. A. (1988). Tobin’s Q and the Importance of Focus in Firm Performance. The American Economic Review, 78(1), 246–250. Retrieved from: http://www.jstor.org/stable/1814713
  38. Zeng, Y., Zhang, J. H., Zhang, J., & Zhang, M. (2021). Key Audit Matters Reports in China: Their Descriptions and Implications of Audit Quality. Accounting Horizons, 35(2), 167–192. https://doi.org/10.2308/HORIZONS-19-189