In Scottsdale, as in the rest of the United States, tipping is common and expected for many services. For restaurant staff, hairdressers, cab drivers and similar service personnel, the usual tip is between 15% and 20% of the total bill. It is also common to tip hotel employees such as bellhops and chambermaids a few dollars per service. Tips are not obligatory, but they significantly increase the income of the staff and are always welcome.