Tip 25% in a New York diner: appreciated. Tip 15% in Tokyo: insulting. Local customs matter.
Some calculations matter for a single decision; this one matters for years. Tip 25% in a New York diner: appreciated. Tip 15% in Tokyo: insulting. Local customs matter.
US 18–22%, Canada 15–20% (often includes alcohol). Service usually not included.
UK and most of Europe: 10% if service not included on the bill.
Japan, South Korea, parts of China: tipping can offend. Service is included or not expected.
Should I tip on hotel housekeeping? $2–5 per day in US, less elsewhere. Leave it daily, not at the end.
What about Uber/Lyft? Optional but appreciated. 10–15% in app is standard in the US.
Whatever number you land on, sanity-check it against a second method or a quick estimate in your head.