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Using deep Q-learning to understand the tax evasion behavior of risk-averse firms - 2018

Author(s) Name:  Nikolaos D.Goumagias,Dimitrios Hristu-Varsakelis and Yannis M.Assael
Journal name:  Expert Systems with Applications
Conferrence name:  
Publisher name:  ELSEVIER
DOI:  10.1016/j.eswa.2018.01.039
Research Area:  Machine Learning
Abstract:

Designing tax policies that are effective in curbing tax evasion and maximize state revenues requires a rigorous understanding of taxpayer behavior. This work explores the problem of determining the strategy a self-interested, risk-averse tax entity is expected to follow, as it “navigates” – in the context of a Markov Decision Process – a government-controlled tax environment that includes random audits, penalties and occasional tax amnesties. Although simplified versions of this problem have been previously explored, the mere assumption of risk-aversion (as opposed to risk-neutrality) raises the complexity of finding the optimal policy well beyond the reach of analytical techniques. Here, we obtain approximate solutions via a combination of Q-learning and recent advances in Deep Reinforcement Learning. By doing so, we (i) determine the tax evasion behavior expected of the taxpayer entity, (ii) calculate the degree of risk aversion of the average entity given empirical estimates of tax evasion, and (iii) evaluate sample tax policies, in terms of expected revenues. Our model can be useful as a testbed for in-vitro testing of tax policies, while our results lead to various policy recommendations.

Volume Information:  Volume 101, 1 July 2018, Pages 258-270
Journal Link:

https://www.sciencedirect.com/science/article/abs/pii/S0957417418300538