Nicola Hi Nicola! Cards don't hold any money, only sub-accounts do. You connect a card to a sub-account, and when you use your card you're paying from that sub-account.
If you've received money, it's already on (one of) your sub-account(s). Just connect your card to it and you can start paying!
Check this page for more information: http://together.bunq.com/d/233