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Tax avoidance and optimal income tax enforcement

Author

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  • Duccio Gamannossi degl’Innocenti

    (Institute for Fiscal Studies)

  • Matthew D. Rablen

    (Institute for Fiscal Studies and Sheffield University)

Abstract

We examine the optimal auditing problem of a tax authority when taxpayers can choose both to evade and avoid. For a convex penalty function the incentive-compatibility constraints may bind for the richest taxpayer and at a positive level of both evasion and avoidance. The audit function is non-increasing in reported income, and is higher for progressive tax functions than for regressive tax functions. Higher marginal tax rates increase the incentives for non-compliance, overturning the well-known Yitzhaki paradox.

Suggested Citation

  • Duccio Gamannossi degl’Innocenti & Matthew D. Rablen, 2017. "Tax avoidance and optimal income tax enforcement," IFS Working Papers W17/08, Institute for Fiscal Studies.
    • Handle: RePEc:ifs:ifsewp:17/08
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    More about this item

    Keywords

    Tax avoidance; Tax evasion; Optimal auditing; Tax administration;
    All these keywords.

    JEL classification:

    • H26 - Public Economics - - Taxation, Subsidies, and Revenue - - - Tax Evasion and Avoidance
    • K42 - Law and Economics - - Legal Procedure, the Legal System, and Illegal Behavior - - - Illegal Behavior and the Enforcement of Law
    • D82 - Microeconomics - - Information, Knowledge, and Uncertainty - - - Asymmetric and Private Information; Mechanism Design
    • H21 - Public Economics - - Taxation, Subsidies, and Revenue - - - Efficiency; Optimal Taxation

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