This document is fresh from the press, it's not yet availible in english för som odd reason, but if you can read any of the other 17 langugeses that it comes in it is very interesting.
In short, one of the Swedish  high courts has asked the European court for advice on where Europe stands on taxing the exchange of bitcoin to fiat and vice vesa. This in turn because a Swedish citizen appealed a decision from the Swedish tax authorties on paying tax for the exchange of bitcoins he is doing in his company.
The european advocat general Juliane Kokott suggests as a verdict that bitcoin should be regarded as a currency and not be taxed. The court usually go with the advocat generals suggestions.

http://curia.europa.eu/juris/document/document.jsf?doclang=DE&text=&pageIndex=0&part=1&mode=DOC&docid=165919&occ=first&dir=&cid=388883