In Portugal, tipping Uber drivers is appreciated but not socially mandatory in the same way it is in the United States. Portuguese culture generally views tipping as a reward for exceptional service rather than a standard supplement to a low wage. If your driver is particularly helpful with heavy luggage, provides great local recommendations, or handles difficult Lisbon traffic with grace, it is common to tip around 5% to 10% of the total fare, or simply round up to the nearest Euro. The Uber app in Portugal allows for digital tipping after the ride is complete, but cash is also accepted. However, many locals do not tip for standard, short-distance rides. It is important to note that rideshare prices in Portugal are relatively affordable compared to other Western European capitals, so a small tip can go a long way for the driver. Overall, the rule of thumb is "discretionary": if the service was better than average, a small gratuity of 1 or 2 Euros is a kind and respectful gesture that aligns with local customs.