The tablet turned around and everyone is watching
I froze at a coffee counter in Austin last year. The barista flipped the tablet around, the buttons read 18%, 22%, and 25%, and a line of six people stood behind me. I had ordered a black coffee that took roughly eleven seconds to pour. I panicked, pressed 22%, and spent the walk back to my hotel wondering why I had just tipped a percentage designed for a full table-service dinner. That was my mistake, and it is the mistake those screens are engineered to produce.
Tipping in the US is confusing right now because two systems are colliding. The old system had clear rules: table service got a percentage, counter service got spare change, and everyone who hauled bags or hailed cabs got a few dollars. The new system puts a percentage screen in front of every transaction, including plenty where no tip was ever expected. This guide covers the actual rules, the mental math I use at the table, and your formal permission to press the skip button.
Restaurants: 18 to 20 percent is the working standard
The Emily Post Institute, which has been refereeing American manners for about a century, puts sit-down wait service at 15 to 20 percent of the pre-tax bill. In practice I treat 18 percent as my floor and 20 percent as my default, partly because service jobs lean hard on tips and partly because 20 is dramatically easier math. The federal tipped minimum wage is still $2.13 an hour, so in many states the tip is not a bonus, it is most of the paycheck.
Concrete numbers: on a $62 dinner, 20 percent is $12.40 and 18 percent is $11.16. For the bar, the same guide suggests $1 to $2 per drink or 15 to 20 percent of the tab. If you are splitting a check across a group, do the whole-bill math first and divide once, rather than letting four people each round differently. A tip calculator does the split in one step: a $184.60 bill at 20 percent adds a $36.92 tip for $221.52 total, which is $55.38 per person across four people.
Delivery, takeout, and the counter question
Food delivery is where I see the most accidental stinginess. The Emily Post guide suggests 10 to 15 percent of the bill for delivery, with $2 to $5 for pizza delivery depending on the size of the order and how hard the trip is. Bad weather, a fourth-floor walkup, or a huge order all push you toward the top of the range. One thing app users get wrong constantly: the delivery fee and the service fee on your receipt are not tips. They usually go to the platform, not the driver, so tip as if those lines did not exist.
Plain takeout that you pick up yourself carries no tipping obligation under traditional etiquette. Nobody served your table, refilled your water, or drove through rain. The counter jar and its digital descendant, the tablet, are genuinely optional. If someone made you a complicated drink, went off-menu, or handled a big catering order, a dollar or two is a kind gesture. For a drip coffee or a grab-and-go sandwich, skip is a complete sentence.
Salons, taxis, hotels, and everyone else
Beyond restaurants, the ranges below come straight from the same Emily Post guide, and they have held steady for years. I keep small bills in my luggage specifically for the hotel entries, because these are the tips people forget most.
- Hair salon or barber: 15 to 20 percent of the service price
- Taxi or rideshare: 15 to 20 percent of the fare
- Hotel housekeeping: $2 to $5 per night, left daily with a note so the right person gets it
- Porter or bellhop: $2 for the first bag, $1 for each additional bag
- Valet: $2 to $5 when your car is returned
- Coat check: $1 to $2 per coat
Mental math that survives a fourth glass of water
You do not need an app for most of this, you need one trick: 10 percent is the decimal point moved one place left, and everything else is built from it. Take a $47.80 bill. Ten percent is $4.78. Double it for 20 percent: $9.56. For 15 percent, take the 10 and add half again: $4.78 plus $2.39 is $7.17. For 18 percent, take the 20 percent figure and knock off a tenth of it: $9.56 minus $0.96 is $8.60.
Rounding is allowed and normal. Nobody has ever been judged for tipping $9.50 or $10.00 on that bill instead of $9.56. Where I stop trusting my head is odd splits, like three people sharing unevenly or a bill with a shared appetizer, and that is when the phone comes out. The whole exchange takes ten seconds and prevents the classic end-of-dinner audit where everyone quietly suspects they overpaid.
Tip on the pre-tax amount, not the total
Etiquette says the tip is calculated on the pre-tax bill, because the tax is not a service anyone performed. The difference is small but real. Say you eat in New York City, where the combined sales tax rate is 8.875 percent. On $50 of food, the tax is $4.44 and the printed total is $54.44. Twenty percent of the food is $10.00 flat; twenty percent of the total is $10.89. That is an 89 cent gap on one meal, which matters exactly nobody at dinner but adds up if you eat out a hundred times a year.
If you want to reverse-engineer what part of a receipt is tax before tipping, a sales tax calculator will split any total back into base and tax in one step. I wrote more about how US sales tax works, and how it differs from the UK's baked-in VAT, in my sales tax vs VAT explainer.
When not to tip, and the discount trap
There are real no-tip zones. Professionals like doctors, lawyers, accountants, and plumbers are not tipped; you pay their invoice and maybe leave a nice review. Self-service kiosks where no human touched your order need nothing, even when the screen asks. Government workers such as postal carriers generally cannot accept cash. And always scan the bill for an automatic gratuity or service charge, which restaurants often add for parties of six or more; tipping a full 20 percent on top of an included 18 percent means paying 38 percent, or $22.80 in tips on a $60 check, and I have watched people do it.
One trap worth naming: coupons and happy hour prices. The polite move is to tip on what the bill would have been before the discount, because the server did full-price work. If a birthday deal knocked your $80 dinner down to $60, tip on the $80, which is $16 at 20 percent rather than $12. When the discount math itself gets fuzzy, stacked offers, percent-off plus a fixed credit, I run it through a discount calculator first and then tip on the original figure.
My thirty-second version
Sit-down meal: 18 to 20 percent pre-tax, 20 if the math should be easy. Delivery: 10 to 15 percent and never below a couple of dollars. Salon and taxi: 15 to 20 percent. Hotel: small bills, daily. Counter service and takeout: optional, skip freely. Check for included gratuity before adding your own, tip on pre-discount prices, and remember that app fees are not tips.
The deeper rule under all of it: the percentage screens are marketing, not etiquette. A guide written by manners professionals says a black coffee needs nothing, and that is the guide I now follow instead of the tablet's suggested buttons. The line behind you will survive the two seconds it takes to press skip.
Questions people ask
Etiquette says no; calculate the tip on the pre-tax food and drink total. In practice the difference is small, roughly 89 cents on a $50 meal at a 8.875 percent tax rate, so nobody will notice either way.
Yes. The Emily Post guide lists 15 to 20 percent for wait service, with 15 fitting adequate service and 20 fitting good service. In larger US cities, 18 to 20 percent has become the everyday norm.
No. Counter service carries no tipping obligation under traditional etiquette. Tip if someone did real extra work for you, and press skip without guilt for a simple pour or a grab-and-go item.
Tip on the pre-discount amount, since the staff did full-price work. If a voucher cut an $80 bill to $60, a 20 percent tip is $16, calculated on the original $80.