Tip Calculator

Background.

Four people, an $87.50 dinner, a 20 % tip: who owes what? The answer is short — the tip is $17.50, the bill becomes $105.00, and each person puts in $26.25 — but it is exactly the kind of sum that goes wrong at a table, especially once the number of diners stops dividing neatly into the total.

Enter the bill, the tip percentage and the number of people, and you get the tip, the new total and each person's equal share. The split is even by design. It suits a table where people ate roughly the same; when one person had a salad and another had steak and wine, itemizing is fairer, and the questions further down show how to do that by hand.

The percentage is where the real decisions sit, and in the United States they carry more weight than in most countries. Under federal law a restaurant may pay a tipped server a cash wage of $2.13 an hour, counting tips toward the $7.25 federal minimum, so in much of the country the tip is a large part of the server's pay rather than a bonus on top of it. Customs have been moving, too: payment screens now suggest tips at counters and kiosks that never asked before, and the percentages printed on receipts have crept upward. Pew Research Center's 2023 survey found that most Americans think tipping is expected in more places than it was five years earlier, and that many are unsure when, or how much, to tip.

None of that changes the arithmetic, which is the same whether the tip is for a meal, a haircut or a taxi ride, and works in any currency.

What is tip calculator?

A tip, or gratuity, is a payment the customer chooses to add for service, on top of the price. Two features set it apart from the rest of the bill. The customer decides the amount, and under the Fair Labor Standards Act it belongs to the workers: an employer may not keep employees' tips, although tips can be pooled among staff. A service charge is different — an amount the business adds itself, such as an automatic gratuity for a large party. The IRS treats a compulsory charge like that as wages paid by the business rather than as a tip, and unless state law says otherwise the business decides how to distribute it. The tip credit is what ties tips to pay in the US: an employer paying the $2.13 cash wage may count up to $5.12 an hour of tips toward the federal minimum, and must top up the wage if tips fall short. Several states, including California, Washington, Oregon, Nevada, Montana, Minnesota and Alaska, allow no tip credit and require the full state minimum wage before tips.

How to use this calculator.

1. 01Enter the bill in dollars. Etiquette guides usually advise using the subtotal before sales tax, and before any coupon or comped dish, since the service was the same either way.
2. 02Enter the tip as a percentage — 20 for twenty percent. For US table service the 18 to 20 % printed on many receipts is a reasonable starting point; use 0 to split a bill without adding a tip, for instance one that already carries an automatic gratuity.
3. 03Enter how many people are sharing the cost equally. With 1 you simply get the tip and the total.
4. 04Read the per-person share, the tip and the new total. Shares are shown to the cent, so when the total does not divide exactly, the shares can add up to a cent or two more or less than the total. When paying on separate cards, ask for each to be charged the per-person figure, tip included.
5. 05To pay a round figure, decide the total you want, then adjust the percentage until the total matches, or use the reverse formula in the explanation below.

The formula.

Three steps, all exact. The tip is the bill times the percentage over 100: T = B × t ÷ 100. The total is the bill plus the tip, which is the same as B × (1 + t ÷ 100); for a 20 % tip the multiplier is 1.20. Each person's share is the total divided by the number of people, P = B × (1 + t ÷ 100) ÷ n. The order does not matter: dividing the bill first and adding the tip to each share gives the same answer. Measured against what you finally pay, a tip looks smaller than its percentage: t ÷ (100 + t) of the total, so a 20 % tip is 20 ÷ 120, or 16.67 %, of the amount on the card slip.

Results are displayed in dollars and cents. When the total does not divide evenly the share is rounded to the nearest cent, so the shares can add up to slightly more or less than the bill. A $100 bill with a 20 % tip split seven ways is $17.1429 each, shown as $17.14, and seven of those make $119.98 — two cents short of the $120 total, so somebody rounds up.

Two rearrangements are useful. To find the percentage you actually tipped after rounding, divide what was paid by the bill, subtract 1 and multiply by 100: paying $108 on an $87.50 bill is (108 ÷ 87.50 − 1) × 100 = 23.43 %. To aim for a fixed total, t = (target ÷ B − 1) × 100, so leaving exactly $100 on an $87.50 bill is a 14.29 % tip.

For mental arithmetic, 10 % is the bill with the decimal point moved one place: $8.75 on $87.50. Twenty percent is double that, $17.50. Fifteen percent is 10 % plus half again, $8.75 + $4.375 = $13.125, which rounds to $13.13, and 18 % is 20 % less 2 %: $17.50 − $1.75 = $15.75.

A worked example.

Frequently asked questions.

References& sources.

1. [1]Pew Research Center (2023). Tipping Culture in America: Public Sees a Changed Landscape. Survey of US adults on tipping norms, frequency, and tip creep.
2. [2]U.S. Department of Labor, Wage and Hour Division. Fact Sheet #15: Tipped Employees Under the Fair Labor Standards Act (FLSA). Federal tipped minimum cash wage of $2.13/hour and tip credit rules.
3. [3]U.S. Bureau of Labor Statistics. Occupational Outlook Handbook: Waiters and Waitresses. Median pay, tip-dependent compensation structure, and industry employment data.
4. [4]Emily Post Institute. General Tipping Guide. Recommended tipping percentages and dollar amounts across restaurants, bars, delivery, valet, hotel staff, and personal services.
5. [5]National Restaurant Association. State of the Restaurant Industry Report. Industry data on tipped wages, service charges, and consumer tipping behavior.
6. [6]Lynn, M. (2015). Service Gratuities and Tipping: A Motivational Framework. Journal of Economic Psychology, 46, 74–88. Peer-reviewed analysis of why consumers tip and what motivates tip size — by the leading academic researcher on tipping (Cornell University).
7. [7]Azar, O. H. (2007). Why pay extra? Tipping and the importance of social norms and feelings in economic theory. Journal of Socio-Economics, 36(2), 250–265. Peer-reviewed economic theory of tipping behavior.
8. [8]Internal Revenue Service. Publication 531: Reporting Tip Income. IRS distinction between tips and service charges (auto-gratuity) for tax purposes.
9. [9]Cornell University School of Hotel Administration. Center for Hospitality Research — Tipping studies archive by Professor Michael Lynn. Long-running academic program on consumer tipping behavior.