In Germany, tipping taxi drivers is common and appreciated, but the "tipping culture" is much more reserved and less aggressive than in the United States. The general rule is to "round up" the fare to the nearest even euro or add approximately 5% to 10% for good service. For a short ride costing €8.40, rounding up to €9.00 or €10.00 is perfectly standard. If the driver was particularly helpful with heavy luggage or provided helpful local advice, a full 10% is a generous gesture. Unlike in some countries where a tip is a mandatory social obligation regardless of quality, in Germany, it is seen as a reward for a job well done. If the service was poor or the driver was rude, it is socially acceptable to pay the exact fare shown on the meter without leaving a tip. When paying by cash, you can simply tell the driver the total amount you wish to pay as you hand over the money by saying "Stimmt so" (keep the change). If you are paying by credit card, most modern card terminals in German taxis will prompt you to add a tip percentage or a custom amount before you tap or swipe, making the process seamless for international travelers.