In Europe, tipping practices vary from region to region, although, in general, tipping is not considered obligatory. In European countries it is a legal requirement to quote prices including all taxes. The expectation when a price is advertised, is to pay that amount and no more. Restaurants post a menu outside including prices. If a service charge is to be added, this is usually indicated on the menu. If an establishment attempts to charge more than was shown on a menu, for example by adding a service charge not clearly posted, or by adding a tip by default, this is seen as an attempt to overcharge the customer.