What’s an acceptable percentage to tip? The amount has been accelerating without any clear economic force driving it, and with unclear benefits for all parties involved. In the 19th century and during the first half of the 20th century, a 10% tip was common. By the 1980s, 15% tips had become the standard. Now we observe 18%, 20%, and even 25% tipping rates.
Perhaps as a result, tipping is a constant source of tension and debate, and a favorite topic for social and economic critique. And, like any controversial subject, it has its own little-understood rules and oddities.