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 edition of the series provides internationally comparative data on aspects of tax systems and their administration in 55 advanced and emerging economies. It covers all jurisdictions that were members of the OECD's Forum on Tax Administration (FTA) at the launch of the 2016 tax administration survey. In addition, it includes information on Peru, that became a member of the FTA in March 2017; the non-FTA jurisdictions that are members of the European Union (i.e. Bulgaria, Croatia, Cyprus, Malta, and Romania); as well as Morocco (which increases the reports' geographical coverage).

Tax Administration 2015 is a comprehensive survey of tax administration systems, practices and performance across 56 advanced and emerging economies (including all OECD, EU, and G20 members).

This consolidated version of the OECD Transfer Pricing Guidelines includes the revised guidance on safe harbours adopted in 2013, as well as the recent amendments made by the Reports on Actions 8-10 and 13 of the BEPS Actions Plan and conforming changes to Chapter IX.

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 report examines how tax compliance strategies are evolving in light of new technologies, data sources and tools and also looks at how these changes might affect the role of audit and auditors in the future.

How do you make taxpayers comply? This ethnography offers a vivid, yet nuanced account of knowledge making at one of Sweden’s most esteemed bureaucracies – the Swedish Tax Agency. In its aim to collect taxes and minimize tax faults, the Agency mediates the application of tax law to ensure compliance and maintain legitimacy in society. This volume follows one risk assessment project’s passage through the Agency, from its inception, through the research phase, in discussions with management to its final abandonment. With its fiscal anthropological approach, Shaping Taxpayers reveals how diverse knowledge claims – legal, economic, cultural – compete to shape taxpayer behaviour.