If you have over €10,000, or the equivalent sum in other currency, when entering or leaving the EU, you must declare the cash by submitting a cash declaration form to Customs. Select the red lane in Customs, or provide Customs with a cash declaration form you have completed in advance.
Cash refers to notes, coins and certain other means of payments, such as cheques and negotiable promissory notes ...
Form ID: Cash Declaration Form - 690e