A tip is a percentage added to a bill, and splitting is a division — so the maths is easy and the awkwardness is entirely social. Multiply the bill by the tip rate to get the tip, add it to get the total, then divide by the number of people.
The genuinely difficult part is knowing what rate to use, because tipping convention is one of the most locally variable things there is. There is no universal answer and this calculator does not assume one.
Tipping norms vary enormously
- United States and Canada. Tipping is expected in restaurants with table service and forms a substantial part of staff income. 15–20% is the usual range, with 18–20% common for sit-down meals.
- Much of Europe. Service is frequently included by law or convention. Rounding up, or adding 5–10% for good service, is typical rather than a full percentage tip.
- Japan, South Korea, China. Tipping is generally not practised and can be actively unwelcome.
- Australia and New Zealand. Not expected, as staff are paid a full wage. Rounding up or tipping around 10% for exceptional service happens but is optional.
- Many other countries fall somewhere between these, and hotel, taxi, bar and delivery conventions often differ from restaurant ones within the same country.
If you are travelling, check the local norm rather than exporting your own — over-tipping and under-tipping are both awkward, in different directions.
Worked examples
$86 bill, 18% tip. The tip is 86 × 0.18 = $15.48, so the total is $101.48. Split between four people, that is $25.37 each.
$120 bill, 15% tip, split three ways. The tip is $18, the total is $138, and each person pays $46.
Rounding up. On a $86 bill you might simply pay $100. That is a tip of $14, or 16.3% — a perfectly reasonable outcome, and often the fastest method at the table.
Where people go wrong
Tipping on the tax-inclusive total. Convention in most places is to tip on the pre-tax amount, though tipping on the total is common and simply slightly more generous. On a $100 bill with 10% tax, the difference at an 18% tip is $1.80 — not worth an argument either way, but worth knowing which you are doing.
Tipping on a discounted bill. If a voucher took $30 off a $100 meal, the service provided was for the full meal. Tipping on the original $100 rather than the discounted $70 is the usual courtesy.
Assuming service charge means no tip. If a service charge is already on the bill — common for large groups — an additional tip is generally not expected. Read the bill before adding.
Splitting evenly when the orders were not. Even splits are fast and usually fine. When one person had a three-course meal and another had a soup, calculating shares proportionally is kinder, if slower.
Rounding the split down. Four people paying $25 each on a $101.48 total leaves the bill $1.48 short. Round the per-person amount up to the nearest sensible unit; the small excess goes to the staff, which is presumably the intent.
Splitting without a tip
The same division works for any shared cost — a rental, a group gift, a utility bill. The tricky cases are unequal shares and rounding: if $100 splits three ways, someone pays the extra cent. Deciding in advance who absorbs the rounding avoids the fiddly bit at the end. Our guide on splitting a bill and tipping works through the uneven-split cases in more detail.