By Philipp Bagus
As I discussed recently, the costs and risks of maintaining the eurozone system are already immense and rising. So is an exit
possible? Intuitively, the exit from the euro should be as easy as the
entrance. Joining and leaving the club should be equally simple. Leaving is
just undoing what was done before. Indeed, many popular articles discuss the
prospects of an exit of countries such as Greece or Germany.[1] However, other voices have rightly argued that
there are important exit problems. Some authors even argue that these problems
would make an exit from the euro virtually impossible. Thus, Eichengreen (2010)
states, "The decision to join the euro area is effectively
irreversible." Similarly, Porter (2010) argues that the large costs of an
exit would make it highly unlikely. In the following we address the alleged
exit problems.
Legal Problems
The Maastricht Treaty does not provide for a mechanism to exit the European
Monetary Union (EMU). Thus, several authors maintain that an exit from
the euro would constitute a breach of the treaties (Cotterill 2011, Procter and
Thieffry 1998, Thieffry 2011, Anthanassiou 2009).[2] In an ECB working paper from 2009 Anthanassiou claims that a
country that exits the EMU would have to leave the EU as well. As the Lisbon Treaty allows for
secession from the EU, withdrawal from the EU would be the only way to get rid
of the euro.

















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