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Audits, Audit Effectiveness, and Post-audit Tax Compliance

Matthias Kasper () and James Alm ()
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Matthias Kasper: Tulane Economics and University of Vienna

No 2010, Working Papers from Tulane University, Department of Economics

Abstract: This study uses a laboratory experiment to investigate the effect of tax audits on post-audit tax compliance. An important feature of our experimental design is the addition of audit ”effectiveness” to our audit mechanism, where effectiveness is defined as the share of undeclared income that the tax agency detects in an audit. This addition allows us to examine the effects of audit effectiveness on post-audit compliance. We also study whether tax audits have differential effects on different types of taxpayers, as distinguished by their prior reporting behavior. Contrary to theoretical predictions, we find that tax audits have differential effects on post-audit compliance and that the effectiveness of audits determines these responses; that is, while effective audits increase post-audit tax compliance, ineffective audits have the opposite effect. We also find that tax audits (whether effective or not) increase subsequent compliance of noncompliant taxpayers while they reduce compliance among individuals who have been found to report their income correctly. Finally, we find no evidence that tax audits crowd out the intrinsic motivation to comply of honest individuals. Our findings suggest that the specific deterrent effect of tax audits is more ambiguous than much previous analysis suggests, with these effects dependent on the effectiveness of the audit process and on the taxpayer’s prior reporting behavior.

Keywords: Tax compliance; Audit effectiveness; Specific deterrence; General deterrence; Laboratory experiments. (search for similar items in EconPapers)
JEL-codes: C9 H26 H83 (search for similar items in EconPapers)
Date: 2020-09
New Economics Papers: this item is included in nep-acc, nep-exp, nep-isf, nep-iue, nep-pbe and nep-pub
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http://repec.tulane.edu/RePEc/pdf/tul2010.pdf First Version, September 2020 (application/pdf)

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