The Eurozone is a subset of EU members; decisions about the governance of the Euro are made by the Euro-using subset of the European Council (the upper house of

The Eurozone is a subset of EU members; decisions about the governance of the Euro are made by the Euro-using subset of the European Council (the upper house of the EU legislature, representing member states directly). Germany has a voting share on the Council proportional to its population. Germany's outsized influence came 25 years ago, when it had the dominant part in writing up the rules and powers of the ECB.