Taxpayers' Behavioural Responses and Measures of Tax Compliance 'Gaps': A Critique
AbstractThe work of Feldstein (1995, 1999) has stimulated substantial conceptual and empirical advances in economists’ approaches to analysing taxpayers’ behavioural responses to changes in tax rates. Meanwhile, a largely independent literature proposing and applying alternative measures of tax compliance has also developed in recent years, which has sought to provide tax agencies with tools to identify the extent of tax non-compliance as a first step to designing policies to improve compliance. In this context, measures of ‘tax gaps’ – the difference between actual tax collected and the potential tax collection under full compliance with the tax code – have become the primary measures of tax non-compliance via (legal) avoidance and/or (illegal) evasion. In this paper we argue that the tax gap as conventionally defined is conceptually flawed because it fails to capture behavioural responses by taxpayers. We show that, in the presence of such behavioural responses, tax gap measures both for indirect taxes (such as the ‘VAT-gap’) and direct (income) taxes exaggerate the degree of noncompliance. Further, where these conventional tax gap measures motivate reforms designed to increase the tax compliance rate, they will likely have a tax base reducing effect and hence generate a smaller increase in realised tax revenues than would be anticipated from the tax gap estimate.
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Bibliographic InfoPaper provided by Victoria University of Wellington, Chair in Public Finance in its series Working Paper Series with number 2853.
Date of creation: 2013
Date of revision:
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Behavioural responses; Taxpayers; Tax rate changes; Tax policy; Compliance;
This paper has been announced in the following NEP Reports:
- NEP-ACC-2013-07-20 (Accounting & Auditing)
- NEP-ALL-2013-07-20 (All new papers)
- NEP-IUE-2013-07-20 (Informal & Underground Economics)
- NEP-PBE-2013-07-20 (Public Economics)
- NEP-PUB-2013-07-20 (Public Finance)
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