The tip formula is simple: Tip = Bill Amount × Tip Percentage. The total you pay is Total = Bill + Tip.
Quick mental calculation methods:
When splitting an unequal bill (different orders), each person should tip on their own portion to be fair. For large groups of 6+ people, many restaurants add an automatic 18–20% gratuity.
Tipping customs vary significantly by country and type of service:
| Service | US Standard | Excellent Service | Notes |
|---|---|---|---|
| Full-service restaurant | 18–20% | 22–25% | Always tip servers — they earn below minimum wage in most US states |
| Counter service / casual | 0–15% | 15–18% | Optional; use your judgment |
| Bartender | $1–2 per drink or 15–20% | 20%+ | Tip per drink at a bar, % for table service |
| Food delivery | 15–20% | 20%+ | Pre-tip or post-tip; add more for long distances or bad weather |
| Taxi / rideshare (Uber/Lyft) | 15–20% | 20% | Rate in app; cash tips appreciated too |
| Hotel housekeeping | $2–5/night | $5–10/night | Leave daily — different staff may clean each day |
| Hairdresser / Barber | 15–20% | 20–25% | Tip even if owner is cutting your hair |
| Tattoo artist | 20–25% | 30%+ | Higher tip reflects skilled artistry |
International tipping: In Japan, tipping is considered rude and may be refused. In Australia and New Zealand, tipping is not customary (service is included in prices). In much of Europe, rounding up or a 5–10% tip is appreciated but not mandatory. The US has the most extensive tipping culture globally.
Group dining can get complicated. Here are the fairest approaches:
Method 1: Equal split
Total (with tip) ÷ number of people. Works best when everyone ordered similar amounts. Example: $240 total with $48 tip (20%) = $288 total ÷ 6 people = $48 each.
Method 2: Pay what you ordered
Each person calculates their own subtotal and tips on that amount. More accurate but requires more math. Apps like Splitwise, Venmo, or PayPal simplify this.
Method 3: One person pays, others Venmo
Easiest operationally. One person pays the full bill and collects from others via payment app. Avoid this if the payer earns rewards on their credit card while others use cash — the rewards effectively transfer from the group to one person.
For large groups: Many restaurants add automatic gratuity (18–20%) for groups of 6 or more. Check the bill before adding another tip on top.
Should you tip on the pre-tax bill or the total including tax? The etiquette community is divided, but here is the practical breakdown:
The actual difference is minor — focus on being consistent and generous rather than optimizing pre vs post-tax. What matters more: is 20% of a $100 bill the right tip regardless of whether it is calculated on $100 or $108.
Digital tipping has changed some dynamics worth understanding:
The US tipping system has significant economic implications worth understanding:
Understanding this economics argues for maintaining or slightly increasing tip percentages over time, as the cost of living for service workers has risen while the traditional 15% standard was set decades ago when $15 was worth more.
Tipping customs vary dramatically by country. What is expected in the US can be offensive elsewhere — and vice versa. Here is a practical guide for international travelers:
| Country | Restaurant Tip | Notes |
|---|---|---|
| United States | 18–20% | Expected; servers earn sub-minimum tipped wage in most states |
| Canada | 15–18% | Similar to US; service included at some restaurants |
| United Kingdom | 10–12.5% | Check if service charge already added; common in London |
| France | 5–10% | Service compris (included) by law; rounding up is polite |
| Germany | 5–10% | Round up or say the amount when paying; do not leave cash on table |
| Italy | 5–10% | Coperto (cover charge) is separate from tip; rounding up appreciated |
| Japan | 0% | Tipping is considered rude and may be refused |
| China | 0–10% | Not customary; upscale tourist restaurants may expect a tip |
| Australia | 0–10% | Not expected; wages are higher due to strong minimum wage laws |
| Mexico | 10–15% | Expected at restaurants; $1–$2 for hotel staff per service |
| Brazil | 10% | Serviço (10%) often included; additional tip optional but appreciated |
| UAE / Dubai | 10–15% | Not obligatory but appreciated; many hotels add service charges |
The fundamental rule: when traveling internationally, research local customs before your trip. Tipping inappropriately — either way — can cause cultural friction. In countries with higher minimum wages and service-included pricing, your tip is a bonus, not a wage substitute as it is in the US.
In the US, 18–20% is the current standard for full-service restaurants. 15% is acceptable for average service; 22–25%+ for exceptional service. Less than 15% sends a signal of dissatisfaction. Tip on the pre-tax subtotal or the full total — the difference is small.
Divide the bill by 5. $65 ÷ 5 = $13. Or: move the decimal point left (that's 10% = $6.50), then double it ($13). Both methods give the same result.
Either is acceptable. Tipping on the pre-tax amount is technically correct by etiquette standards, but the difference is small (about $0.80 extra on a $50 bill with 8% tax). Most people tip on the total for simplicity, which servers appreciate.
In the US, yes — not tipping at a full-service restaurant is widely considered rude. Servers depend on tips for most of their income due to the sub-minimum tipped wage system. Not tipping at counter service, fast food, or self-service is generally acceptable.
For simplicity, divide the total (including tip) equally. For fairness when orders differ greatly, calculate each person's share individually and add a proportional tip. Apps like Splitwise, Venmo, or PayPal make this easy.
Check if the service charge goes to the staff or the restaurant. If it goes to the server, an additional tip is optional but appreciated. If it goes to the restaurant (increasingly common), consider adding a small additional cash tip directly to your server.
15–20% is standard for food delivery. Add more for long distances, bad weather, large orders, or exceptional service. Note that delivery workers often see the tip before accepting your order — low tips may result in slower pickup or rejection. $5 is a reasonable minimum regardless of percentage for short deliveries.
Counter service tips are optional and appreciated, not obligatory like sit-down service. If you are a regular, tipping occasionally builds goodwill and may lead to better service. 10–15% or rounding up is appropriate. Ignoring the iPad tip prompt at pure counter service (bagging your own groceries, self-ordering kiosk) is entirely acceptable.
$2–$5 per night is the standard guideline for hotel housekeeping in the US, left daily (not just at checkout, since different staff may clean each day). Leave the tip on the pillow or nightstand with a note saying it is for housekeeping. $5–$10 per night is appropriate for upscale hotels or extended stays with extra requests. In budget hotels, $1–$2 per night is appreciated.
Tattoo artists are typically tipped 20–25% of the total session cost. For large, complex pieces, tips of 25–30% are not uncommon. Tipping a tattoo artist is considered standard practice in the US — similar to tipping a hairdresser. Cash tips are preferred since the artist keeps 100%. Even if the shop owner is your artist, tipping is appropriate.