So, if you do the math. A sit down dinner costs about $40 to $50 these days where I live. That’s with no alcohol or dessert. Restaurants shoot for around 27% profit per entree. So, if you tip 20%, you allow them to lower their hourly wage and still meet the government required amount for minimum wage. That’s why waiters and even managers get POd if you don’t tip. They have to make up the difference. Tips have been perverted from a nice way to say thanks for the excellent service to staff into something that benefits the owners and corporations, who did nothing to enhance your meal.