Impact of Regulatory Change on Income Smoothing and Earning Distortions? Evidence from a Univariate Approach


  • Adedeji Gbadebo Walter Sisulu University, Mthatha, South Africa


Income smoothing; Earnings management; Generally Acceptable Accounting Practices; International Financial Reporting Standards, Discretionary accruals, Univariate testing


There are reports that managers may commit to misstating or h manipulating their financial performance by underestimating or overestimating actual economic items. Notably, research presents evidence that a change in accounting standards has implication for the reduction in such manipulations. The paper applies univariate analysis to examine whether there is likely difference between income smooth and earnings management – two common measures of financial report manipulations – between the two accounting regulatory regimes (Generally Acceptable Accounting Practices and the Financial Reporting Standards) in South Africa. The finding confirms that the adoption of IFRS caused, to some extent a reduction in discretional income smoothing and earnings distortion. Furtherance, the outcome is robust and not sensitive to the methods applied for the test; thus, the evidence can be used to make informed policy decisions. The result has implication for regulation, policy making and modification of extant Standards.


Abuda, I. R., & Rudiawarni, F. A. (2014). The Impacts of IFRS Adoption on Financial Statement Quality for Firms Listed in Indonesia Stock Exchange. Global Journal of Business and Social Science Review Journal Review. 2 (4), 95 – 102. Available:

Adedokun, W. M. ., Gbadebo, A. D. ., Adekunle, A. O. ., & Akande, J. O. . (2022). IFRS Adoption and Accrual-Based Managed Earnings in Nigeria. Asian Economic and Financial Review, 12(12), 1041–1073.

Ahmed, A., Neel, M. and Wang, D. (2013). Does Mandatory Adoption of IFRS Improve Accounting Quality? Preliminary Evidence. Contemporary Accounting Research. 30 (4), 1344–1372.

Barth, M. E., Landsman, W. R., & Lang, M. H. (2008). International accounting standards and accounting quality. Journal of Accounting Research. 43, 467–498.

Bertrand, J., de Brebisson, H., & Burietz, A., (2020). Why Choosing IFRS? Benefits of Voluntary Adoption by European Private Companies. International Review of Law and amp; Economics.

Bhatia, M., & Mulenga, M. J. (2019). Value Relevance of Accounting Information: A Review of Empirical Evidence Across Continents. Jindal Journal of Business Research, 227868211882330.

Brennan, N. M. (2022). Connecting earnings management to the real world: What happens in the black box of the boardroom? The British Accounting Review, 53 (6): 101036.

Cadot, J., Rezaee, A. & Chemama, R. B. (2020). Earnings Management and Derivatives Reporting: Evidence from the Adoption of IFRS Standards in Europe, Applied Economics.

Chimonaki, C. & Konstantinos, V. K. (2020). Evaluating the Effect of IFRS Adoption on Earnings Management in Greece. A Logit Approach. Portsmouth Business School, University of Portsmouth, UK. Monograph.

Dechow, P. M., R. G. Sloan, & A. P. Sweeney. (1995). Detecting Earnings Management. Account Review. 70, 193–225. Available at SSRN:

De-Moura, A. F., Altuwaijri, A., & Gupta, J. (2020). Did Mandatory IFRS Adoption Affect the Cost of Capital in Latin American Countries? Journal of International Accounting, Auditing and Taxation. Journal of International Accounting, Auditing and Taxation 38, 100301.

Dimitropoulos, P. E., Asteriou, D., Dimitrios Kousenidis, D., & Leventis, S. (2013): The impact of IFRS on accounting quality: Evidence from Greece, Advances in Accounting, incorporating Advances in International Accounting 29, 108–123.

Gassen, Joachim, Fuelbier, Rolf Uwe and Sellhorn, Thorsten (2006), “International Differences in Conditional Conservatism: The Role of Unconditional Conservatism and Income Smoothing”, European Accounting Review, Vol. 15, No. 4, pp. 527 – 564.

Gbadebo, A. D. (2023). Does the International Financial Reporting Standard Impact Earnings Management of the JSE Firms?. Jurnal Dinamika Akuntansi, 15(1), 99-115.

Guermazi, W. & Khamoussi, H. (2018). Mandatory IFRS Adoption in Europe: Effect on the Conservative Financial Reporting. Journal of Financial Reporting and Accounting 16 (4).

IFRS Foundation (2023). Use of IFRS Standards by Jurisdiction. Available at:

Irani, R. M., & D. Oesch. (2016). Analyst Coverage and Real Earnings Management: Quasi-experimental Evidence. Journal of Financial and Quantitative Analysis 51 (2), 589–627.

Isaboke, C. and Chen, Y. (2019). IFRS Adoption, Value Relevance and Conditional Conservatism: Evidence from China. International Journal of Accounting & Information Management 27 (4).

Ki, D. H., Lee, W. B., & Yuk, J. H. (2019). The Effect of IFRS Adoption on the Value Relevance of Accounting Information: Evidence from South Korea. Investment Management and Financial Innovations, 16(2), 78-88.

Klish, A. A., Shubita, M., and Wu, J. (2021). IFRS Adoption and Financial Reporting Quality in the MENA Region. Journal of Applied Accounting Research.

Kousay, S. (2019). The Impact of IFRS Adoption on Earnings Management-Results from Canada. Journal of Economics and Business. 2(3), 540- 554.

Ma, C., Awan, R. U., Ren, D., Alharthi, M., Haider, J., & Kouser, R. (2022). The IFRS adoption, accounting quality, and banking performance: An evaluation of susceptibilities and financial stability in developing economies. PLOS ONE, 17(7), e0265688.

Malofeeva, T.N. (2018). The Impact of IFRS Adoption on Earnings Management in Russia. European Research Studies Journal. 21 (2), 147-164.

Martínez, C. R. (2015). The Impact of the Convergence to IFRS on the Accounting Quality in Mexico.

Mensah, E. (2020). The Effect of IFRS Adoption on Financial Reporting Quality: Evidence from Listed Manufacturing Firms in Ghana, Economic Research-Ekonomska Istraživanja,

Odoemelam, N., Okafor, G. R., & Ofoegbu, G. N., (2019). Effect of International Financial Reporting Standard (IFRS) Adoption on Earnings Value Relevance of Quoted Nigerian Firms. Cogent Business & Management.

Ozili, P. & Outa, E. (2018). Bank Income Smoothing in South Africa: Role of Ownership, IFRS and Economic fluctuation.

Shubita, M. (2015). The impact of income smoothing on earnings quality in emerging markets: Evidence from GCC markets. Journal of Accounting in Emerging Economies, 5 (3). pp. 299-324.

Tawiah, V., & Boolaky, P. (2020). A Review of Literature on IFRS in Africa. Journal of Accounting and Organizational Change. 16 (1), 47-70.

Udayakumara, K.G.A., & Weerathunga, P.R. (2016). The Impact of IFRS/SLFRS Adoption on the Earnings Management of Sri Lankan Firms.

Yeboah, B. & Yeboah, M. (2015): When Is Accounting Quality Improved? Assessing the Earnings Management Effect of IFRS for South Africa. International Journal of Accounting and Financial Management Research. 5 (2), 1–16. Available:



How to Cite

Gbadebo, A. (2024). Impact of Regulatory Change on Income Smoothing and Earning Distortions? Evidence from a Univariate Approach: . Acta Universitatis Danubius. Œconomica, 20(3). Retrieved from



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