TIP CALCULATOR
$48.00 × 10% = $4.80 tip. Total $52.80 split 4 ways = $13.20 each. Two-decimal rounding. Tip is calculated from the bill amount you enter — if your receipt already includes tax, enter the amount you want to base the tip on.
Updated May 2026 · Built by Lukáš, an architect in Prague.
Assumptions, rounding & limitations
Assumptions
- Tip is calculated on the bill amount you enter. If you tip on the post-tax total, enter the post-tax bill.
- Per-person split is even; each person pays the same share of total.
- Both decimal comma (18,5) and decimal point (18.5) are accepted.
- Shared links keep the entered values in the URL fragment (after #), which is never sent to our server.
Rounding
Tip, total, and per-person amounts are rounded to 2 decimal places for display.
Limitations
- Local tipping conventions are not looked up — defaults reflect US sit-down norms.
- Automatic service charges (common for large parties or in some countries) are not detected; check the receipt before adding a tip on top.
- Uneven splits are not modelled.
Quick reference — tip amounts for common bills
| Bill | 15% | 18% | 20% |
|---|---|---|---|
| $20.00 | $3.00 → $23.00 | $3.60 → $23.60 | $4.00 → $24.00 |
| $30.00 | $4.50 → $34.50 | $5.40 → $35.40 | $6.00 → $36.00 |
| $40.00 | $6.00 → $46.00 | $7.20 → $47.20 | $8.00 → $48.00 |
| $50.00 | $7.50 → $57.50 | $9.00 → $59.00 | $10.00 → $60.00 |
| $60.00 | $9.00 → $69.00 | $10.80 → $70.80 | $12.00 → $72.00 |
| $80.00 | $12.00 → $92.00 | $14.40 → $94.40 | $16.00 → $96.00 |
| $100.00 | $15.00 → $115.00 | $18.00 → $118.00 | $20.00 → $120.00 |
| $150.00 | $22.50 → $172.50 | $27.00 → $177.00 | $30.00 → $180.00 |
| $200.00 | $30.00 → $230.00 | $36.00 → $236.00 | $40.00 → $240.00 |
How do I calculate a 15% or 18% tip in my head?
For 15%: take 10% (move the decimal one place left), then add half of that. Bill of $40 → 10% is $4 → half is $2 → 15% is $6. For 18%: same trick, then add a bit more. For 20%: take 10% and double it.
Should I tip on the pre-tax or post-tax total?
Pre-tax is the traditional standard in the US — you’re tipping for service, not for tax. But many people tip on the post-tax total because it’s what’s printed on the receipt and it’s easier. Both are acceptable.
Is 20% standard in 2026?
In US sit-down restaurants, yes. “Tip creep” has pushed the expected range from 15–18% (2010s) to 18–22% (2020s). Counter-service and takeout are more flexible — 10% or a few dollars is common, sometimes 0% if it’s true counter-service.
How do I split a bill unevenly?
This calculator does an even split. For uneven splits, ask the server to print separate checks (most US restaurants will), or calculate each person’s share manually and add a flat tip percentage to each.
How do I calculate tax and tip together?
Tip and sales tax are separate charges. The traditional US approach is to tip on the pre-tax subtotal, then add tax on top — but many people tip on the after-tax total shown on the receipt because it’s simpler. Both are accepted. This calculator works out the tip; for the tax portion, run the bill through the Sales Tax Calculator first, then tip on whichever total you prefer.
How much should I tip in New York City?
NYC follows standard US sit-down norms: 18–20% is typical, 15% for adequate service, more for great service. A local shortcut is to double the city sales tax (8.875%) for roughly an 18% tip. There’s nothing NYC-specific in the math — enter your bill and tip percentage above. The same applies to other high-tax cities.