Tip / Bill Split Calculator
Bill, tip, and per-person split — all done for you.
In the US, 15-20% is standard for sit-down restaurants, with 20%+ for great service. Per-person = (bill + tip) ÷ number of people.
Tipping Norms & Splitting the Bill
Tipping customs vary a lot by country, and even within the US by service type. In the US, sit-down restaurants generally expect 15-20% of the pre-tax total, while counter service, delivery, and bars often use different norms.
Tipping around the world
Outside the US, tipping norms shift dramatically — in Japan, tipping is often considered unnecessary or even mildly awkward, since excellent service is viewed as a standard expectation rather than something extra to reward. In much of Europe, a service charge is frequently built into the bill already, so an additional 5-10% rounding-up tip is polite but far smaller than the American norm. Always worth a quick check of local custom before assuming the percentage you're used to at home applies.
FAQ
Should I tip on the pre-tax or post-tax total?
Tip on the pre-tax subtotal. Tipping on the post-tax amount rounds up slightly, which is fine too, but pre-tax is the technically correct baseline most etiquette guides recommend.
Is tipping mandatory in the US?
Tipping isn't legally required, but it's a strong social expectation for sit-down service, since many servers are paid a lower base wage that assumes tip income. Skipping it entirely is generally considered rude unless service was genuinely bad.
What if the bill already includes a service charge?
Some restaurants (especially for large groups) add an automatic gratuity or service charge, usually 18-20%. Check the bill carefully — if it's already there, an additional tip isn't expected, though you can add a little more for exceptional service.
Related Tools
Common mistakes and interpretation
For a $150 bill with a 10% tip, the tip is $15 and the total is $165. Split four ways, that is $41.25 per person before any rounding. Real-world payment can follow the restaurant’s rules and your preferred rounding method.
Practical use
Tipping customs vary widely by country and venue. The calculator handles the arithmetic; whether a tip is expected and what rate is appropriate should be based on local practice and the bill itself.
Content check: 2026-09-12. This guide explains the calculator rather than promising a particular outcome; for formal decisions, use current official or provider documentation.