Survey Reveals Americans <br />Do Not Tip As Well As They Think The “Financial Etiquette” survey comes from <br />financial services firm TD Ameritrade. Over 80 percent of survey respondents <br />classify themselves as generous tippers. Compared to waiters, it seems <br />bartenders and food delivery drivers <br />are not getting tipped nearly as well Just over half say they tip <br />those who deliver food. Less than half give extra cash to taxi drivers. The survey adds that not even a third <br />tip parking attendants and hotel cleaners. Baby boomers are shown to <br />tip more than younger generations. Just 33 percent of boomers <br />say tipping is an option. Boomers also tip wait staff 91 percent of the <br />time and cab drivers 55 percent of the time. By comparison, millennials tip waiters 72 percent <br />of the time and taxis at a 36 percent rate. 52 percent of millennials <br />also say tipping is optional.