Tipping in the United States can feel like a pop quiz nobody warned you about. The card reader flips around, three percentages flash on the screen, and a line starts forming behind you. Knowing how much to tip before you are put on the spot turns an awkward moment into a two-second decision. This guide covers US tipping etiquette for the situations you will actually run into — restaurants, bars, delivery, coffee shops and more — plus the simple math behind every tip.
What is tipping, and why does the US do it?
A tip (or gratuity) is a voluntary payment added on top of the bill as a thank-you for service. In the US, tipping is a deeply rooted custom rather than a law: nobody can force you to tip, but in many settings it is strongly expected. Part of the reason is structural — in most states, tipped workers such as servers and bartenders can legally be paid a lower base hourly wage, with tips expected to make up the difference. That is why tipping etiquette matters here more than in countries where service charges are built into prices. The modern standard for sit-down restaurants is 18–20% of the pre-tax bill.
How much to tip: the quick-reference guide
Memorize this list and you will handle 95% of tipping situations without thinking twice:
- Sit-down restaurants: 18–20% of the pre-tax bill. 15% is the floor for poor service; 20% or more for great service.
- Bars: $1–$2 per drink, or 15–20% of the tab if you run one.
- Food delivery: 15–20%, with a $3–$5 minimum depending on distance and weather. Drivers cover their own gas and vehicle wear.
- Coffee shops: tipping is optional — a dollar or your spare change in the jar is plenty. Card-reader prompts are suggestions set by the shop, not rules.
- Haircuts, salons and barbers: 15–20% of the service price.
- Rideshares: 10–15% in the app after the ride.
- Hotels: $2–$5 per night for housekeeping, $1–$2 per bag for bell staff.
- Valets: $2–$5 when your car is returned.
How to calculate a tip in 4 steps
The math is simpler than it looks. Here is the routine:
- Start with the subtotal before sales tax. The pre-tax line on your receipt is the conventional base for tipping. (If the receipt is confusing, our sales tax calculator can separate tax from subtotal for you.)
- Pick your percentage. 20% is the safe default for good service at a restaurant; adjust down for bad service or up for exceptional service.
- Multiply. A quick mental shortcut: find 10% by moving the decimal one place left ($80 → $8), then double it for 20% ($16).
- Round and split. Add the tip to the bill for the total, then divide by the number of people sharing the check.
Worked example: $80 dinner, 20% tip, split 4 ways
Say the bill comes to $80 and service was good, so you tip 20%:
- Tip = $80 × 0.20 = $16.00
- Total = $80 + $16 = $96.00
- Each person pays = $96 ÷ 4 = $24.00
You can run the same numbers instantly — including uneven splits — with our free tip calculator.
The tip formula, explained simply
Every tip calculation is the same three-part formula:
- Tip = bill × tip rate (as a decimal — 20% becomes 0.20)
- Total = bill + tip
- Per person = total ÷ number of people
That is all a tip calculator does: it runs this formula and rounds to the nearest cent. Tip on the pre-tax subtotal is the widely accepted convention, though tipping on the post-tax total is also fine — it just costs you a little more.
Common tipping mistakes
- Double-tipping when gratuity is already included. Parties of six or more often get an automatic 18–20% service charge — check the receipt before adding more.
- Tipping on the discounted amount when you used a gift card. Tip on the full bill, not on what came out of your pocket.
- Undertipping delivery drivers. A $2 tip on a $40 order does not cover their costs; stick to 15–20%.
- Guilt-tipping at every card reader. Counter-service tip jars and 25% prompts are optional — save real tips for real service.
- Forgetting cash is king. Staff generally prefer cash tips (no processing cut, money in hand tonight), though card tips are completely fine.
Traveling soon and dealing with foreign prices too? Our currency converter helps you make sense of bills in other currencies before you tip on them.