 European banking supervision is about making sure that banks in Europe are safe and sound, so that people can rely on banks in their daily life, when they save, spend or borrow money. How exactly are European banks supervised? Supervisors from the ECB and from national central banks work on this together in teams. We check that banks comply with the banking rules of the European Union. We look at the way in which banks borrow, lend and invest money to assess whether they are fit to operate. We can require banks to hold more money in reserve, as a safety net in case of problems. We can also grant and withdraw bank licenses and sanction banks if they break the rules. European banking supervision aims to help banks be resilient to face financial crisis and support the economy in Europe.