From Convergence to Diffusion: The EU's influence on national tax systems. ACES Cases No. 2011.2

In this article I investigate to what extent European Integration stimulates policy convergence and diffusion of various forms of tax policy. Using a mixed-methods design, I find that several causal mechanisms contribute to an EU-wide diffusion of tax policies: imposition, competition, harmonization and learning/communication. I show that these mechanisms have different effects on different forms of taxation. Even if the ultimate outcome of this influence only in few cases leads to unconditional convergence, the EU has markedly accelerated policy diffusion among its member states.

Practical Modified Gini Index. ACES Working Papers, 2012

The Gini index is the most common method for estimating the level of income inequality in countries. In this paper we suggest a simple modification that takes into account the moderating effect of in-kind government benefits. Unlike other studies that use micro level data that is rarely available for many countries or over a period of time, the proposed modified Gini index could be calculated using just the regularly available data for each country. Such data includes the original Gini coefficient, government consumption expenditures, GDP and total tax revenue as a percentage of GDP. This modified version of the Gini index allows us to calculate the level of inequality more precisely, and make better comparisons between countries and over time.

TRAC: a market-based tax on capital flight as an alternative to Grexit. CEPS Commentary, 7 May 2015

In this CEPS Commentary, Daniel Gros turns his attention to the main outstanding problem facing Greece today, namely capital flight. Fearful that the country will leave the euro, depositors are withdrawing cash from their bank accounts – thereby making this event more likely. He outlines a proposal in which outgoing payments from Greek banks in the form of cash or via the TARGET system would be limited to the amount of incoming payments, i.e. revenues from exports or tourism, via an auction system. Greece could remain formally a member of the euro area, but the price for cash withdrawals would encourage depositors to wait and stimulate exports.