Lisbon is expected to double its tourist tax, joining a growing number of cities in Portugal that are implementing such fees. The tax, which is applied to anyone staying overnight in the city, will increase from €2 to €4 per person per night, adding an additional cost to visitors. The revenue generated from the tax will be used for maintaining the city’s infrastructure. Other Portuguese cities, such as Amarante, have also introduced tourist taxes, with Amarante’s tax varying depending on the season.