Anybody entering Germany from another EU member state carrying money in cash or equivalent means of payment in a total amount of 10,000 euros or more is obliged to declare this amount of money verbally to the customs control unit when asked (pursuant to Article 12a (2) of the Customs Administrations Act (Zollverwaltungsgesetz)).
This measure is intended to combat money laundering, the funding of terrorism and criminal activities; it contributes to improving security and preventing crime within Germany and the EU.
The customs control units monitor observance of the obligation to declare both at the borders and within the national territory.