This paper sets out a framework for analyzing optimal interventions by a tax administration, one that parallels and can be closely integrated with established frameworks for thinking about optimal tax policy. Its key contribution is the development of a summary measure of the impact of administrative interventions—the “enforcement elasticity of tax revenue”—that is a sufficient statistic for the behavioral response to such interventions, much as the elasticity of taxable income serves as a sufficient statistic for the response to tax rates. Amongst the applications are characterizations of the optimal balance between policy and administrative measures, and of the optimal compliance gap.

An approach to taxation that goes beyond an emphasis on tax rates to consider such aspects as administration, compliance, and remittance. Despite its theoretical elegance, the standard optimal tax model has significant limitations. In this book, Joel Slemrod and Christian Gillitzer argue that tax analysis must move beyond the emphasis on optimal tax rates and bases to consider such aspects of taxation as administration, compliance, and remittance. Slemrod and Gillitzer explore what they term a tax-systems approach, which takes tax evasion seriously; revisits the issue of remittance, or who writes the check to cover tax liability (employer or employee, retailer or consumer); incorporates administrative and compliance costs; recognizes a range of behavioral responses to tax rates; considers nonstandard instruments, including tax base breadth and enforcement effort; and acknowledges that tighter enforcement is sometimes a more socially desirable way to raise revenue than an increase in statutory tax rates. Policy makers, Slemrod and Gillitzer argue, would be well advised to recognize the interrelationship of tax rates, bases, enforcement, and administration, and acknowledge that tax policy is really tax-systems policy.

This report is the ninth edition of the OECD's Tax Administration Series. It provides internationally comparative data on aspects of tax systems and their administration in 59 advanced and emerging economies.

This paper sets out a framework for analyzing optimal interventions by a tax administration, one that parallels and can be closely integrated with established frameworks for thinking about optimal tax policy. Its key contribution is the development of a summary measure of the impact of administrative interventions—the “enforcement elasticity of tax revenue”—that is a sufficient statistic for the behavioral response to such interventions, much as the elasticity of taxable income serves as a sufficient statistic for the response to tax rates. Amongst the applications are characterizations of the optimal balance between policy and administrative measures, and of the optimal compliance gap.

This paper examines the role of tax administration in developing countries from an economic perspective. The traditional separation of tax policy and tax administration in the literature is shown to break down in developing countries, where tax administrators decide in what manner complicated tax legislation should actually be applied. After surveying economic literature dealing with tax administration, the paper offers guidelines on how tax administrators can help implement more efficient and equitable tax systems.

This paper addresses core challenges that all tax administrations face in dealing with noncompliance—which are now receiving renewed attention. Long a priority in developing countries, assuring strong compliance has acquired greater priority in countries facing intensified revenue needs, and is critical for fairness and statebuilding. Series: Policy Papers

Experts discuss strategies for curtailing tax evasion