Sales tax around Utah is typically between 6.5% and 8% with some exceptions. Salt Lake County sales tax is 7.25% and the statewide food tax is 3.0%. Tax is added to your bill in restaurants and at shop counters. In the USA it is customary to tip for all services, this includes serving staff in restaurants, bar tenders, hotel staff, local guides and taxi, Uber or Lyft drivers. A guideline is to tip between 15% and 20% in restaurants, a dollar per drink at a bar, guides between 10% and 20%, taxi drivers between 15% and 20% and a few dollars for an Uber or Lyft driver.