Abstract
This paper presents a statistics-based method for detecting value-added tax evasion by Kazakhstani legal entities. Starting from features selection we perform an initial exploratory data analysis using Kohonen self-organizing maps; this allows us to make basic assumptions on the nature of tax compliant companies. Then we select a statistical model and propose an algorithm to estimate its parameters in unsupervised manner. Statistical approach appears to benefit the task of detecting tax evasion: our model outperforms the scoring model used by the State Revenue Committee of the Republic of Kazakhstan demonstrating significantly closer association between scores and audit results.
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Notes
- 1.
Joint Order of the Minister of Finance of the Republic of Kazakhstan dated September 16, 2011, # 468, and acting Minister of Economic Development and Trade of the Republic of Kazakhstan dated September 16, 2011, # 302, “On approval of the risk assessment criteria in the field of private enterprise on the execution of tax laws, and other laws of the Republic of Kazakhstan, control over the execution of which is entrusted to the tax authorities” (has been canceled on December 25, 2015).
- 2.
The RoK tax forms can be found at http://kgd.gov.kz/en/section/formy-nalogovoy-otchetnosti.
- 3.
Correlations are negative since the new model assigns lower scores to the companies which are more likely to evade VAT.
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Acknowledgments
We would like to thank Inês Russinho Mouga for the thorough review of [9].
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Assylbekov, Z., Melnykov, I., Bekishev, R., Baltabayeva, A., Bissengaliyeva, D., Mamlin, E. (2016). Detecting Value-Added Tax Evasion by Business Entities of Kazakhstan. In: Czarnowski, I., Caballero, A., Howlett, R., Jain, L. (eds) Intelligent Decision Technologies 2016. IDT 2016. Smart Innovation, Systems and Technologies, vol 56. Springer, Cham. https://doi.org/10.1007/978-3-319-39630-9_4
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DOI: https://doi.org/10.1007/978-3-319-39630-9_4
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