Last updated: March 2026
How to Calculate a Tip
Calculating a tip is straightforward once you know the formula: multiply the bill amount by the tip percentage, then add that to the bill for the total. For example, on a $85 bill with a 20% tip, the math is $85 × 0.20 = $17 tip, making the total $102.
The standard tip in American restaurants has shifted from 15% to 18-20% over the past decade. In 2024, the average tip at full-service restaurants was 19.4% according to payment processing data.
The tricky part is doing this quickly in your head at the table. A useful mental shortcut: to find 20%, just move the decimal point one place left (10% of $85 = $8.50), then double it ($17). For 15%, find 10% then add half again ($8.50 + $4.25 = $12.75).
When splitting the bill, divide the total (bill + tip) by the number of people. Our calculator handles all of this instantly, including rounding options that make cash payments easier. Just enter the bill, select a tip percentage, and set the number of people.
The standard US tipping range runs from 15% to 25%, with 20% being the most common. Tip amounts vary by service type: counter service and takeout typically receive 10–15%, while full-service restaurants expect 18–20% minimum. Exceptional service warrants 25% or more.
Tipping Etiquette by Service Type
Tipping norms vary significantly by service context. At sit-down restaurants, 18–20% is the baseline expectation for servers who are often paid a lower base wage that assumes tips. At bars, $1–2 per drink or 15–20% of the tab is standard. For food delivery, 15–20% is expected with $3–5 minimum regardless of order size.
Buffets are an exception — 10% is standard since servers have reduced responsibilities. Coffee shops and counter-service spots have seen tip requests increase with digital payment systems; 10–15% for specialty drinks is appreciated but not obligatory.
For international travel, tipping culture varies dramatically. Many European countries include service charges automatically. Japan and some Asian countries consider tipping impolite. Australia pays higher base wages and tips are optional. Always research local customs before traveling.
Frequently Asked Questions
How much should you tip at a restaurant?
The standard tip at a US restaurant is 15–20% of the pre-tax bill. 15% is considered acceptable for average service, 18% for good service, 20% for great service, and 25%+ for exceptional service. Tipping below 15% is generally considered poor form unless service was genuinely bad.
Do you tip on the pre-tax or post-tax amount?
Convention is to tip on the pre-tax subtotal, since the server didn’t provide the tax. However, tipping on the total (including tax) is also common and often easier. The difference is small — on a $100 pre-tax meal in a state with 8% tax, tipping 20% on the subtotal is $20 versus $21.60 on the total.
How do you split a bill evenly between people?
Enter the total bill amount, select your tip percentage, and set the number of people using the + button. The calculator instantly shows each person’s equal share including tip. For example, a $120 bill with 20% tip split 4 ways = $36 per person.
What is automatic gratuity?
Many restaurants automatically add 18–20% gratuity (sometimes called a service charge) for parties of 6 or more. Always check your bill before adding an additional tip — if auto-gratuity is included, you’ve already tipped. The IRS classifies mandatory service charges as wages, not tips.
How much do you tip for takeout?
Tipping on takeout is optional but appreciated. 10–15% is a common courtesy for counter-service orders, especially at restaurants where servers and kitchen staff prepare your food. Delivery orders typically warrant 15–20% given the additional service.
What is the 'round up' option in this calculator?
The 'round up total' option rounds your total bill + tip up to the next whole dollar, slightly increasing the tip in the process. 'Round up per person' rounds each person’s share up to the nearest cent. Both options make it easier to pay with cash or split evenly without dealing with odd cents.