✦ Tip calculator
Enter the bill, pick a tip %, add tax & discount — the receipt updates live. Toggle whether the tip is calculated on the pre-tax or post-tax amount.
✦ Worked examples
Real numbers, verified against the calculator above.
Tip pre-tax: $100 × 18% = $18.00 · Tip post-tax: $108 × 18% = $19.44 The difference is $1.44 — pre-tax tipping is the traditional standard.
✦ Bill splitter
Three ways to split: equal (everyone pays the same), by item (each person lists what they ordered — tax, discount & tip shared proportionally), or custom shares (percentages or exact amounts).
For each person, type their item prices separated by spaces, e.g. 12.50 8.00 4.25. Names are optional.
✦ Tipping etiquette by country
Tipping norms differ wildly — in some places a tip delights, in others it offends. Set the currency above, then check your destination. Norms are for sit-down restaurants unless noted.
Tipping guide by country (quick reference)
| Country | Typical tip | Notes |
|---|---|---|
| 🇺🇸 United States | 15–20% | 15% adequate, 18–20% good service, 20–25%+ exceptional. Tip on the pre-tax subtotal. Parties of 6–8+ often get 18–22% auto-gratuity — check the bill. |
| 🇨🇦 Canada | 15–20% | Same norms as the US, on the pre-tax subtotal. Provincial taxes (GST/HST/PST) vary, so the post-tax total looks higher — another reason to tip pre-tax. |
| 🇬🇧 United Kingdom | 10–15% | Check for a 12.5% discretionary service charge first — if it's there, no extra tip is needed. 10% in cash for great service is always appreciated. |
| 🇮🇪 Ireland | 10–15% | Optional but appreciated; 10% for good service. No service charge is standard. |
| 🇫🇷 France | Included | 15% service compris is included by law (printed on the bill). Rounding up or leaving small change is a nice gesture, never an obligation. |
| 🇩🇪 Germany | 5–10% | Round up the bill and say “Stimmt so” (keep the change). 5–10% for good service. |
| 🇮🇹 Italy | Not expected | A coperto (cover charge) or servizio may already be on the bill. Tipping isn't expected; a few euros for exceptional service is generous. |
| 🇪🇸 Spain | Not expected | Round up or leave 5–10% only for truly great service. Locals rarely tip beyond small change. |
| 🇯🇵 Japan | Do not tip | Tipping can be seen as rude — excellent service is standard and priced in. Staff may chase you to return money left on the table. |
| 🇰🇷 South Korea | Not customary | Tipping is not customary and may cause confusion. High-end hotels may add a service charge automatically. |
| 🇦🇺 Australia | ~10% | Optional — wages are higher. 10% for genuinely great service; rounding up the bill is common. |
| 🇮🇩 Indonesia | 5–10% | Many restaurants already add 5–10% service charge plus tax (PB1) — check the bill. If nothing is added, 5–10% cash is appreciated. |
| 🇮🇳 India | ~10% | 10% if no service charge is printed. Fine-dining spots often include it — read the bill. |
| 🇦🇪 UAE | 10–15% | 10–15% if no service charge is included; many Dubai/Abu Dhabi restaurants add one automatically. |
| 🇧🇷 Brazil | 10% | A 10% serviço is usually printed on the bill and is optional but customary to pay. |
✦ Mental-math tip tricks
No calculator? These tricks get you within cents in seconds.
1 · The 10% anchor
Move the decimal point one place left: 10% of $80 = $8.00. Everything else builds on this.
2 · 15% = 10% + half
10% of $80 is $8.00, half of that is $4.00 → 15% = $12.00. Works for any bill.
3 · 20% = double the 10%
10% of $80 is $8.00 → 20% = $16.00. For 18%: take 20% and subtract 2% ($16 − $1.60 = $14.40).
4 · Double-the-tax trick
Where sales tax is ~7–9%, doubling the tax ≈ a 15% tip. Tax of $8.00 on $100 → ~$16 tip (true 15% = $15). Quick and close — an approximation, not exact math.
Quick tip table (10% · 15% · 20%)
| Bill | 10% | 15% | 20% |
|---|
Covers the classic long-tail questions: "how much to tip for $50" → $7.50 at 15%; "15 percent tip on 80 dollars" → $12.00.
✦ How the math works
Order of operations
Discount is applied first (to the subtotal), then tax is calculated on the discounted amount, then tip is calculated on either the pre-tax (discounted subtotal) or post-tax amount depending on your toggle. All money math uses integer cents — no floating-point drift — and each line rounds half-up to the cent.
Fair splitting (largest remainder)
When a total doesn't divide evenly, each person's share is floored to the cent and the leftover cents are handed out one cent at a time, starting with the first person. So $100 ÷ 3 becomes $33.34 · $33.33 · $33.33 — shares always sum to the exact total.
By-item splitting
Each person's item subtotal is their "weight". Discount, tax and tip are distributed proportionally to those weights (tax on the discounted share), with the same largest-remainder fix so every column adds up exactly.
Whole-dollar rounding
Rounding each share to whole dollars almost never sums to the bill, so the tool auto-adjusts: the rounded total is compared against the bill rounded the same way, and $1 corrections go to the person(s) with the smallest rounding distortion — clearly labelled in the results.
What this tool is not
Currency selection changes formatting only (symbols, decimals, grouping) — there are no live exchange rates and no conversion. Tipping norms are general guidance, not rules; when in doubt, follow local custom and what's printed on the bill.
✦ Annual tip analyzer: what "tipflation" costs you
Tip percentages have crept from 15% to 20% to 25%. See what that costs you over a year.
| Tip rate | Yearly tips (dining) | Yearly tips (delivery) | Total / year |
|---|
✦ Frequently asked questions
Short answers to the questions people actually type into Google.