What the Numbers Mean

An $80 bill at 18% split two ways comes to a $14.40 tip and $94.40 total — $47.20 per person ($40 bill + $7.20 tip each). Bumping to 20% adds just $0.80 per person and is the more common standard for good service.

Tipping Etiquette

Tipping is core to US service income, so tip on the higher end (20-25%) for large groups, long table holds, and exceptional service. Outside the US, service charges are often included and rounding up suffices — and in Japan, tipping can be unwelcome. Always check local customs.