How much should I tip at a restaurant?+
In the UK, 10–12.5% is standard. In the US, 15–20% is customary, with 18–20% for good service. Always check whether a service charge is already included before adding a tip.
Should I tip on the pre-tax or post-tax amount?+
In the US, tipping on the pre-tax subtotal is technically correct, but many people tip on the total for simplicity. In the UK, tip on the total bill.
How do I calculate 15% tip quickly in my head?+
Find 10% (move the decimal one place left), then add half of that for 15%. For a £48 bill: 10% = £4.80, half = £2.40, total tip = £7.20.
What if the bill is split unevenly?+
For uneven splits, enter each person's subtotal separately. The calculator adds the pro-rated tip to each person's amount.