How much to tip on $90
Multiply the bill by the tip rate as a decimal. On a $90.00 bill, 18% is $90.00 x 0.18 = $16.20. 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% | $13.50 | $103.50 |
| 18% | $16.20 | $106.20 |
| 20% | $18.00 | $108.00 |
| 22% | $19.80 | $109.80 |
| 25% | $22.50 | $112.50 |
Splitting a $90.00 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% | $51.75 | $34.50 | $25.88 |
| 18% | $53.10 | $35.40 | $26.55 |
| 20% | $54.00 | $36.00 | $27.00 |
| 22% | $54.90 | $36.60 | $27.45 |
| 25% | $56.25 | $37.50 | $28.13 |
Mental math for a $90.00 bill
Ten percent of $90.00 is $9.00: just move the decimal point one place to the left. From there, 20% is double ($18.00), 15% is 10% plus half of 10% ($9.00 + $4.50 = $13.50), and 5% is half of 10% ($4.50). Round to the nearest dollar if that is easier; a tip of $18.00 instead of $18.00 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 $90.00 pre-tax bill is $19.44 instead of $18.00, about $1.44 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 $75, tip on $80, tip on $85, tip on $95, tip on $100, tip on $105. For any other amount or to round each share up to a whole dollar, use the tip calculator.