The report provides an empirical analysis of personal and corporate tax competition in the European Union. The authors find that tax competition increasingly takes the form of preferential or narrowly targeted tax regimes on top of general rate cuts. They provide a ranking of the most harmful regimes targeting foreign, primarily high income or high-wealth individuals. They also discuss several options to address these trends.
The report notes that the most striking trend in EU tax competition is the increase in the number of personal income tax schemes targeting foreign individuals. The number of such regimes has increased from 5 in 1995 to 28 today. At present, preferential regimes apply to over 200,000 beneficiaries. A lower-bound estimation suggests that the total fiscal costs for the European Union amount to EUR 4.5 billion per year.
You can read the full report here.