How much to tip on $100
Multiply the bill by the tip rate as a decimal. On a $100.00 bill, 18% is $100.00 x 0.18 = $18.00. The table covers the common rates; 15% to 20% is standard for sit-down service in the US, 18% to 20% is typical in cities, and 22% to 25% is for outstanding service or large parties.
| Tip rate | Tip | Total with tip |
|---|---|---|
| 15% | $15.00 | $115.00 |
| 18% | $18.00 | $118.00 |
| 20% | $20.00 | $120.00 |
| 22% | $22.00 | $122.00 |
| 25% | $25.00 | $125.00 |
Splitting a $100.00 bill
Add the tip first, then divide by the number of people. Each share below includes the tip.
| Tip rate | 2 people | 3 people | 4 people |
|---|---|---|---|
| 15% | $57.50 | $38.33 | $28.75 |
| 18% | $59.00 | $39.33 | $29.50 |
| 20% | $60.00 | $40.00 | $30.00 |
| 22% | $61.00 | $40.67 | $30.50 |
| 25% | $62.50 | $41.67 | $31.25 |
Mental math for a $100.00 bill
Ten percent of $100.00 is $10.00: just move the decimal point one place to the left. From there, 20% is double ($20.00), 15% is 10% plus half of 10% ($10.00 + $5.00 = $15.00), and 5% is half of 10% ($5.00). Round to the nearest dollar if that is easier; a tip of $20.00 instead of $20.00 is well within the normal range.
Before or after tax?
Etiquette guides recommend tipping on the pre-tax subtotal. In practice, many people tip on the total, and the difference is small: at 8% sales tax, a 20% tip on the post-tax amount of a $100.00 pre-tax bill is $21.60 instead of $20.00, about $1.60 more. Check whether a service charge or gratuity has already been added, which is common for parties of six or more; in that case no extra tip is expected.
Nearby bill amounts
tip on $85, tip on $90, tip on $95, tip on $105, tip on $110, tip on $115. For any other amount or to round each share up to a whole dollar, use the tip calculator.