What’s essential to know?
The EU is a custom union, which entails:
Free movement of goods between EU member states. When goods are imported in one member state, they can freely move to any other member state without further custom duties and formalities.
All EU member states share a common Custom Tariff and the same custom procedures. More
EU member states deal with different currencies:
19 member states (Austria, Belgium, Cyprus, Estonia, Finland, France, Germany, Greece, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Portugal, Slovakia, Slovenia, Spain) use the euro as their national currency.