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...

This study investigates the contagious nature of tax avoidance by examining how narratives affect tax avoiding behavior. We adapt the idea of narrative economics indicating that individuals' actions are stimulated by stories that spread within a society. We employ two types of infection models...

We propose a model that captures tax avoidance as an investment under uncertainty: searching for tax loopholes or developing legal avoidance schemes is associated with costs; the tax benefit is however uncertain. Its height depends on whether or not the tax agency agrees with the chosen...

This paper reveals how tax complexity, in the form of loopholes and assets overlapping different sections of tax returns, contributes to tax avoidance and evasion. Using administrative data from the Netherlands, it shows how an auditing announcement in 2005 triggered large increases in declared...

We examine an international panel of domestic firms to quantify the degree to which conforming tax avoidance changes with statutory tax rates. We derive an alternative estimation method that identifies conforming tax avoidance from the variation of tax rates over time and across countries. We...

We propose a game-theoretic investigation to capture the interplay between the behavior of tax consultants, taxpayers, and the tax authority in a setting of tax complexity. Our purpose is to provide answers to two research questions: Which aspects of the strategic interaction between the players...