Then we a have rainbow full of places that tipping is frowned upon: China, French-Polynesia, Singapore, Myanmar, Taipei, Nepal, Korea and Switzerland. In these countries a tip is not expected but rounding up the bill is, it's pretty much customary: Italy, Russia, Belgium, Australia, and I probably missing a dozen more.

While tipping is a global norm in many regions, it is considered unnecessary or even insulting in Japan, South Korea, and Singapore. In Japan, providing excellent service is a matter of professional pride (the concept of Omotenashi), and leaving cash on the table may result in the server chasing you down the street to return your "forgotten" money. In South Korea, tipping can be seen as a gesture of "charity" toward someone you perceive as lower-status, which is a significant social faux pas. In Singapore, the government actively discourages tipping in restaurants and airports, as a 10% "service charge" is already legally included in most bills. In many parts of Mainland China, tipping was historically viewed as bribery, and while it is becoming more common in high-end international hotels in Beijing or Shanghai, it remains a confusing and often refused gesture in local establishments. In these countries, a sincere "thank you" and a return visit are the most appreciated forms of gratitude.