With a series of public goods games in a 2x2-design, we analyze two channels that might moderate social dilemmas and increase cooperation without using pecuniary incentives: moral framing and shaming. Cooperation increases when non-contributing to a public good is framed as morally debatable and...

Tax practitioners alongside taxpayers and tax authorities are the major actors in a tax compliance system. They assist the government to enforce tax law when it is unambiguous but exploit tax law to the detriment of compliance when the tax rules are ambiguous. Using a sample of 13 listed...

The taxation of high-income earners is of importance to every country and is the subject of a considerable amount of recent academic research. Such high-income earners contribute substantial amounts of tax and generate signifi cant positive spillovers, but are also highly mobile: a 1% increase...

The paper is a summary of the exchange of knowledge and experience that took place in the course of the project "Mutual Learning for Reducing Tax Gaps in V4 Countries and Ukraine" co-financed by the Visegrad Fund in the years 2016-2017. Five institutions took part in the project: Center for...

The paper summarizes knowledge on tax gaps in Poland with respect to PIT, CIT, VAT, and excise. An introduction to the Polish tax system is given, trends in tax collect ability and estimates of the tax gaps are discussed, and methods of combating tax evasion and avoidance are reviewed. The paper...

CASE prepared a new study for the European Commission on the VAT Gap in the European Union in 2015. The figures offer an important snapshot of the problems of collecting VAT in the EU and what needs to be done to improve revenues and fight tax fraud. During 2015, the overall VAT that should have...

This paper investigates the presence of framing effects and loss aversion in tax reporting behavior of wage earners using a balanced panel of German income tax return data. Reference dependence and loss aversion suggest that individuals in a perceived loss situation attribute higher value to a...

I study tax avoidance along the income distribution based on micro data from the Income and Consumption Survey (EVS) for the year 2013. The richness of the survey concerning income, taxes and expenditures is exploited by modelling the German tax code in terms of the items available in the EVS....

This study examines the relation between risk-based tax audit strategies and corporate tax avoidance. We exploit OECD data across 54 countries on risk profiling, predictive modeling, and internal intelligence functions in tax administrations from 2014 to 2017 to investigate whether risk-based...

This Report has been prepared for the European Commission, DG TAXUD under contract TAXUD/2017/DE/329, "Study and Reports on the VAT Gap in the EU-28 Member States" and serves as a follow-up to the six reports published between 2013 and 2018. This Study contains new estimates of the Value Added...