How Much to Tip at Restaurants, on Delivery, and When the Check Gets Split
By Jeff Beem
The bill lands in the little black folder and everyone goes quiet for half a second. Someone pulls out a phone. Someone else says, “We can just split it evenly.” Nobody wants to be the person who gets the math wrong or looks cheap.
Tipping is two things at once: a social norm that changes by country and situation, and plain arithmetic. When you separate the two, most decisions get easier. The percentages people quote for U.S. sit-down service (often 15%, 18%, or 20%) are applied to a specific base number, usually the pre-tax subtotal, not the inflated total at the bottom of the receipt. Our Tip Calculator uses whatever amount you enter, so if you want to follow the usual U.S. convention, type the subtotal before tax and choose your percentage there.
This article focuses on everyday U.S. situations travelers also hit: restaurants, delivery, takeout, and group checks. It is general guidance, not a rulebook for every city or employer policy. When in doubt, favor the person doing the work when the wage structure assumes tips.
Sit-down restaurants in the United States
In much of the U.S., full-service restaurant tips are understood as part of how front-of-house staff earn income. Customers leave a percentage of the meal cost; the exact percentage signals how satisfied you were with the service.
15% is often described as a baseline when everything was fine but not memorable. 18% is a common middle ground in many metro areas. 20% (or slightly more) is typical when service was attentive, accurate, and friendly, or when you occupied the table for a long time during a rush. Large parties sometimes see an automatic gratuity line (commonly 18% or 20%) added by the house. If that charge is already on the check, you are usually not expected to stack a full second tip on top, though rounding up for standout service still happens.
What matters for the math is which dollar amount you multiply. Sales tax is not a reward for your server; it goes to the government. Standard practice in the U.S. is to calculate the tip from the food and drink subtotal before tax. If the receipt only shows one big number, look for a line that says subtotal or tax and back into the pre-tax amount. When tax is bundled in and you cannot separate it, many people tip on the post-tax total anyway so they do not shortchange staff; that is a bit more than strict pre-tax math, which is fine if it is intentional.
If you want to see how much difference the tax line makes, take the same percentage against subtotal vs. total. For a check where tax is small, the gap is a dollar or two. On expensive meals or high local tax, it adds up. Our calculator is built for quick repeats: change the bill amount, tap 15%, 18%, or 20%, and read tip, total with tip, and per person if you are splitting.
Takeout, counters, and delivery apps
Takeout you pick up yourself is the grayest zone. Some people leave 10% when the staff packaged a large or fiddly order; some leave a flat few dollars; some add nothing. There is no single national standard. If someone clearly went out of their way (curbside in bad weather, special dietary packaging, fixing a mistake before you arrived), a small tip often lands better than zero.
Delivery is different. The person bringing the order is usually using their own time, vehicle, and fuel. 15% to 20% is a common range for many U.S. deliveries, with reasons to go higher for long distances, heavy stairs, bad weather, or huge orders. App presets are starting points, not laws. If the platform already folded a service fee into what you paid, that money does not always reach the driver the way a cash tip or in-app tip does, so read the breakdown when you care about who gets what.
Coffee shops and fast-casual counters with a tablet flipped toward you: tipping is often optional and can be a flat dollar or a modest percentage. Reasonable people disagree on how much is “expected.” Use your judgment and the local vibe rather than anxiety.
Splitting the check without doing it in your head
Even splits are the friendliest default when everyone ordered in the same ballpark. Uneven splits get messy fast: itemized receipts, Venmo chains, and someone always forgetting the appetizer they shared.
When you agree to split evenly, the fair per-person amount is the total with tip (subtotal plus tip) divided by the number of diners, using the tip everyone actually wants to leave. If one person insists on 18% and another quietly wanted 15%, negotiate once, then lock it. The Tip Calculator divides total with tip by headcount so you can say, “Thirty-four each,” and move on.
If one diner drank heavily and others did not, even splits stop being fair. In that case, separate checks (ask up front), one person paying and settling peer-to-peer later, or a rough adjustment (“I’ll cover $20 more”) beats pretending the math is equal.
Pre-tax vs. post-tax in real life
Restaurants print the tax line because they must. Your tip percentage is about the service experience, not the state’s cut. That is why etiquette references and many staff expectations focus on pre-tax amounts, a convention our tool’s help text follows for the U.S.
When you only see one number, you are not failing if you use it as the base. Consistency and generosity matter more than pretending you are auditing the receipt under a microscope. If you like seeing tax peeled out for other purchases too, a Sales Tax Calculator can help you sanity-check what the register added before you mentally separate “food dollars” from “tax dollars.”
Traveling outside the United States
Norms are not exportable. In Japan, tipping is generally not expected and can confuse staff. In much of Western Europe, a service charge may already be included; an extra small amount is sometimes appreciated but not always. In the United Kingdom, rounding up or 10% to 12% may apply when service is not included. The point is to look up the place you are in rather than autopilot U.S. percentages onto every receipt worldwide. On the Tip Calculator, the Location and Service type fields plus the Information hub (regional cheat sheet and typical tip table) summarize common norms before you travel. They are shortcuts, not local law, so double-check when it matters.
When something goes wrong
Bad service happens. Most people still leave something, but may move toward the lower end of the usual band or speak to a manager about a serious issue (incorrect charges, hostility, safety). Withholding 100% of a tip over a small fixable mistake often punishes the worker more than it fixes the problem, especially when kitchen errors are out of their control. Use the scale (15 / 18 / 20) as a dial, not a loyalty program.
A simple workflow you can repeat
- Find the pre-tax subtotal on the receipt (or your best honest estimate).
- Choose a percentage that matches the service: 15%, 18%, or 20% for typical U.S. sit-down meals.
- Add tip to get total with tip.
- Divide by diners if you are splitting evenly.
That is the whole pipeline the Tip Calculator automates: tip amount, total with tip, and per-person share, including the quick percentage buttons most people use at the table.
Tipping will never be perfectly comfortable. Getting the arithmetic out of the way frees you to focus on the part that actually needs judgment: whether the people serving you were professional, kind, and on your side for an hour. When they were, the math is usually the easy part.
Sources: For why tips matter in U.S. wage rules, see the U.S. Department of Labor Wage and Hour Division: Fact Sheet #15: Tipped Employees Under the Fair Labor Standards Act (FLSA). Percentage norms (such as 15% to 20% for full-service dining) are cultural; etiquette and travel guides summarize them, and practices abroad differ, so confirm expectations for your destination before you go.
Related tools: Tip Calculator · Sales Tax Calculator · Budget Calculator