Splitting a bill shouldn’t require a math degree. Here’s how tipping works, what’s expected in different situations, and how to split fairly.
Standard tip amounts
| Service | Typical tip |
|---|---|
| Restaurant (sit-down) | 15-20% |
| Bartender | $1-2 per drink or 15-20% of tab |
| Delivery (food) | 15-20%, minimum $3-5 |
| Taxi/rideshare | 15-20% |
| Hairdresser/barber | 15-20% |
| Hotel housekeeping | $2-5 per night |
| Coffee shop (counter) | $1 or 10-15% |
| Takeout | 0-10% (optional) |
| Buffet | 10% |
These are US norms. Tipping customs vary significantly by country.
Quick mental math for tips
The 10% method
- 10% = Move the decimal point one place left ($85.40 → $8.54)
- 20% = Double the 10% amount ($8.54 × 2 = $17.08)
- 15% = 10% + half of 10% ($8.54 + $4.27 = $12.81)
Round for convenience
- Bill: $47.23
- 20% = $9.45
- Round up to $10 → Total $57.23 (easy to pay)
Splitting bills fairly
Equal split
Divide total (including tip) by number of people. Simple, but unfair if spending varied widely.
Proportional split
Each person pays based on what they ordered. Fairer, but requires tracking individual items.
The practical approach
- Calculate the tip on the full bill
- Add tip to the subtotal
- Divide by number of people
- Round up (the extra cents aren’t worth arguing over)
Pre-tax vs post-tax tipping
Technically, tips should be calculated on the pre-tax amount. But in practice, most people tip on the total (including tax). The difference is small:
- $50 bill + $4.25 tax = $54.25
- 20% pre-tax: $10.00
- 20% post-tax: $10.85
Both are acceptable. On large bills, the difference becomes more noticeable.
Tipping around the world
| Country | Norm |
|---|---|
| USA | 15-20% expected |
| Canada | 15-20% expected |
| UK | 10-15%, often included as service charge |
| Europe | 5-10% or round up, not always expected |
| Japan | No tipping (can be considered rude) |
| Australia | Not expected, 10% for excellent service |
| China | Not customary |
When the bill seems wrong
Before tipping, double-check:
- Were all items charged correctly?
- Is a service charge already included? (Common for large groups)
- Were drinks and food on the same tab?
Some restaurants add an automatic gratuity for parties of 6+. Don’t double-tip.
A tip calculator handles the math instantly — enter the bill amount, select the tip percentage, choose how many people are splitting, and get per-person totals.