Tipping in restaurants and cafes in Germany is common but not obligatory. It is customary to round up the bill or leave a tip of around 5% to 10% of the total amount if you are satisfied with the service. However, tipping practices can vary, and some people choose to tip more or less depending on their experience. In some restaurants, the service charge may already be included in the bill. In such cases, leaving an additional tip is not necessary. It’s always a good idea to check the bill or ask the staff if you are unsure about whether the service charge is included.