Tipping can be a bit tricky. What's the percentage I give to a server who did an excellent job? What about a terrible job? How should the 5 of us split the bill, including tip? With Tippette, tipping etiquette is simple. What's the total, including tax? Next, how many people are going to be splitting this? And, finally, how was the service? With these super simple questions, you'll get an easy answer: Tip this much.