There is still insufficient sharing of tax information between EU member states to ensure fair and effective taxation throughout the Single Market, a new special report published by the European Court of Auditors (ECA) has claimed.

The problem is not with the EU’s legislative framework, which was found to be largely sufficient for the exchange of tax information. There is a concern that it is incomplete with regard to stemming tax avoidance and evasion.

Cryptocurrencies, as well as other forms of income, for instance, are not subject to mandatory reporting, thus remaining largely untaxed.

Instead the problem...