Your US credit card is not a default in a Tokyo restaurant. It is a per-shop feature, and whether a given shop has it tracks the shape of the restaurant far more than the logo on your card. Chains, hotel dining rooms, department-store restaurants, and most places that hand you a printed English menu run a card terminal. Small independents, older neighborhood shops, and counter-only places frequently do not, and the failure there is rarely a terminal saying no. It's no terminal at all. Transit IC cards reach further than credit cards do, QR-code payment is largely locked behind domestic services and phone numbers that a short trip can't produce, and the only thing that reliably prevents the end-of-meal scramble is reading the shop before you order and carrying enough cash to cover the bill either way.
I learned the shape of this standing at a counter with eight stools.
Two blocks off a station exit on a cold night, every seat taken, a few of us outside with our hands in our pockets, waiting. The menu was on the wall in photographs. I pointed at what I wanted, ate, and then slid my card across the counter with the bill.
The owner looked at the card. Then at me. Then, without any particular drama, he tilted his head toward a small laminated card taped above the register: handwritten Japanese, and underneath it, in ballpoint, CASH ONLY. I had walked past it on the way in.
Then came the pocket pat-down and the mental arithmetic of coins. I had enough that night, barely, and the relief lasted about as long as the walk to the door. What stayed with me afterward wasn't the money. It was that the answer had been posted at eye level before I sat down and I hadn't looked, because nothing in my daily life had trained me to look.
That's the part that doesn't transfer. In the US, paying by card isn't a decision, it's the surface you walk on; you'd have to work to find a place that won't take one. In Tokyo it's a decision you make once per shop, and you make it before you order rather than after you eat.
So now I do a four-second scan before I sit down.
What the shop tells you before you order
The scan starts at the door frame. Credit card logos and the IC card mark are usually applied to the glass or the frame at roughly eye height, sometimes a row of them, sometimes just one. If there's nothing there, that's information, not a gap in the signage.
Then I look at the register, which is the part most visitors never study because at home they've never had to. From the customer side of the counter you can usually see whether the terminal has a screen facing you and whether the same device has a flat pad for tapping a transit card. Those two functions ride on the same hardware more often than not: a shop that installed a reader for IC cards is usually a shop that takes credit cards on the same machine. A register with a small tray, a calculator, and a cash drawer and nothing else is a cash register in the literal sense.
If there's a ticket machine by the door, the kind where you choose your dish, pay, and hand the ticket to the staff, look at what it eats. Some accept IC cards. Plenty are coins and notes only. That machine is the entire payment system for the shop, so it settles the question before a single word is exchanged.
And the seat count. I trust it more than I probably should. Eight stools and one person working both sides of the counter is a different payment environment than forty seats, a host stand, and a menu with an English column. It isn't a rule — plenty of tiny counters have a terminal tucked behind the water pitcher — but it shifts the odds enough that I plan around it.
Chains, hotels, and anywhere with an English menu
Multi-location ramen and curry shops, family restaurants, izakaya chains, the tenant restaurants inside station buildings and department stores, hotel dining rooms: these take major international credit cards as a matter of course, and they have the IC reader as well, so both doors are open. Note that "chain" is doing the work here, not "nice." A beautiful independent with a famous kitchen and a waiting list can still be cash only, and an unglamorous chain on a building's second floor can take everything. I stopped trying to guess from how good the room looks.
The middle band, where you actually get caught
Family-run places with twenty or thirty seats, neighborhood izakaya, a tonkatsu or tempura shop that's been in the same spot for decades. This is the band that goes either way, and the outside doesn't always predict it. Some installed a terminal years ago and take cards at dinner but not at lunch. Some take cards only above a certain bill, and the threshold is written on that same laminated card. Some take one card brand and not another. This is why "do Tokyo restaurants take credit cards" has no single answer, and why the answer that tends to get published is just "carry cash."
Counters, ticket machines, and older shops
Standing soba bars, nine-seat yakitori counters, older coffee shops, ramen places with a ticket machine, market stalls. Cash only is the norm here. Sometimes it's a preference, sometimes the monthly cost of a terminal doesn't pencil out for a shop that seats nine, sometimes the owner has run the place for forty years and has never needed one. I don't treat these as obstacles. I just don't walk into one without notes in my pocket.
IC cards reach further than credit cards do
A transit IC card loaded with stored value is the single most useful payment tool a visitor can carry. Every chain register and convenience store takes it, along with most station kiosks, a large share of mid-size restaurants, and an increasing number of ticket machines. The reason it reaches further than a credit card is mechanical: the reader on the counter is often the same device, and the transaction clears without a signature or a slip. Tap, hear the two-tone confirmation, done.
What it doesn't do is rescue you at the counter with the tray. Small restaurants rarely have that reader installed, because installing it is the same decision as accepting cards in the first place. And the card isn't really an alternative to cash so much as a way to carry less of it — loading a transit card means feeding it cash at a machine, usually at a station.
The QR codes on every register mostly aren't for you
Japan runs on QR payment in a way the US doesn't, and you'll see the logos plastered across registers, vending machines, and window decals everywhere. Most of the big services are tied to a domestic phone number and a domestic funding source, and setting one up as a short-term visitor ranges from inconvenient to impossible. Treat QR as something that might work, not as your backup plan. Your backup plan is cash.
No tip line, and what the card slip actually asks
The slip comes back with the total on it and nothing else. No tip line, no suggested percentages, no signature required at plenty of places. The amount on the bill is the amount charged, and the first few times that feels unfinished — you keep waiting for the second slip, or for the server to circle back. Nobody is coming back. You pay what's printed and you leave.
One more piece of culture shock in the other direction: at a table-service restaurant, the staff will often carry your card to the register and bring it back. Handing your card to someone and watching them walk off is normal here. It isn't a signal, and it isn't a risk you're expected to manage.
Asking is normal, and so is the cash in your pocket
Asking before you order is completely ordinary, and staff would rather answer the question than untangle a payment problem after you've eaten. Holding the card up at chest height and saying "card?" gets you a yes or a no in about a second. Nobody is offended. If the answer is no, you haven't ordered yet, and you get to decide whether you're staying or walking two blocks to the next place.
On cash: carry enough for a meal or two, in notes and coins. Coins matter more here than you'd expect, because ticket machines and small counters run on them, and you'll want them for the odd stall or shrine-side shop. Refill from an ATM before you need it, not while you're standing at a register watching someone total your bill. The ATMs that most consistently read foreign cards are the ones inside convenience stores and post offices; the one in a bank branch lobby is more likely to refuse you, and usually during hours when nobody can help. What your own bank does to you for that withdrawal is a separate question worth settling before you fly, not at the machine.
The honest tradeoff is this: I still pay by card most days in Tokyo, because most of my days involve chains, cafés, and places where the terminal is sitting in plain view. Card acceptance is a shop-level purchase decision with a recurring cost, and a nine-seat restaurant makes a different calculation than a chain does — which is also why the direction of travel is toward more acceptance while the older stock of shops stays exactly where it is. So it isn't that Tokyo is a cash city and your card is useless. It's that cash is the one method that has never failed me at a counter, and I'd rather not have the method be the thing I'm thinking about when the food shows up.