Since October 1, 2026, the Tokaido and Sanyo Shinkansen have a class above the Green Car: Supreme Class. It is a private cabin with a locking door, and a one-way ride from Tokyo to Shin-Osaka starts at ¥42,390, a little over twice the Green Car fare. Only some trains have it and you can only book online, so here is what you need to know before you try.
What Is Supreme Class? Choosing Between the Two Cabins
Car 7 vs Car 10
What you can book today is the fully private “Cabin” type, and each train has just two of them. The one in Car 7 is larger, with a sofa next to the main seat, and fits up to two people. The one in Car 10 is a single. Both are enclosed rooms with an electronic lock.
Fares are charged per reservation, and each reservation covers one person. Below are smartEX adult one-way fares for the Nozomi in the regular season. Off-peak is ¥200 cheaper, peak is ¥200 more, and the busiest peak is ¥400 more. Hikari and Kodama fares are different.
| Route | Car 7 (1–2 people) | Car 10 (1 person) |
|---|---|---|
| Tokyo – Nagoya | ¥47,060 | ¥32,660 |
| Tokyo – Shin-Osaka | ¥60,790 | ¥42,390 |
| Tokyo – Hiroshima | ¥86,620 | ¥60,020 |
| Shin-Osaka – Hakata | ¥72,690 | ¥50,090 |
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So does a couple pay double for Car 7? No. The person who books pays the fare above, and a companion just needs a regular fare ticket and limited express ticket for the same train, whether non-reserved, reserved or Green Car. Children 6 and under ride free. That means two people sharing Car 7 pay less than booking two Car 10 cabins.
Inside the Cabin
The seat is a powered recliner with a leg rest that goes further back than a Green Car seat. Everything runs from a dedicated tablet: recline, lumbar support, seat heater, airflow, and lighting modes for normal, work, relax and sleep. Speakers in the headrest pair with your phone, so you can play music without headphones.
There is also a dedicated Wi-Fi network, power outlets with USB-A and USB-C, a table and a coat hanger. On the Nozomi and Hikari, an attendant brings a welcome drink and snack, and you can order from the onboard menu on the tablet. The cabin seat does not rotate, so it always faces the same way.
How to Book and Board
Booking on smartEX
Supreme Class is sold only through JR Central’s online booking services, not at station ticket offices. For overseas visitors, smartEX is the practical choice: it has an English interface, and you just register and add a credit card. Our guide on how to reserve Shinkansen tickets in Japan walks through the setup. Sales open at 10:00 a.m. one month before the travel date, so unlike regular seats, you cannot book Supreme Class up to a year ahead.
The service is ticketless. You go through the gate with a transit IC card or a QR code ticket, and paper tickets cannot be picked up at the station. Linking a Welcome Suica or other IC card to your smartEX account is the easiest way to ride. Cabin layouts, the timetable and booking details are on JR Central’s official Supreme Class site.
Is It Worth the Extra Money?
On Tokyo to Shin-Osaka, a regular Nozomi Green Car ticket costs ¥19,590, so the Car 10 cabin is more than double. What the extra buys is privacy. You can take calls, join a video meeting or sleep in whatever position you like without worrying about the person next to you.
If you just want more legroom, the Green Car already does the job. Supreme Class makes the most sense for business travelers who need a quiet place to work, or for two people who want the two-plus hours between Tokyo and the Kansai region to themselves. New to the bullet train? Start with our Shinkansen ticket purchase and riding guide.
You book Supreme Class on smartEX, enter the station with a QR code on your phone, and if you plan to take meetings in the cabin, you need a connection you can count on. CDJapan Rental’s eSIM runs on the docomo network, and you buy it online and activate it by scanning a code, with no physical SIM to swap, so you have a backup whenever the onboard Wi-Fi drops.
FAQ
Can I use the Japan Rail Pass for Supreme Class?
JR Central has said nothing about the Japan Rail Pass for Supreme Class. The cabins are sold only through online services like smartEX and paid by credit card, so there is currently no way to book one with your pass.
Will my large suitcase fit in the cabin?
Only bags up to 55 x 40 x 25 cm, roughly carry-on size, fit in the cabin’s luggage space. Anything bigger follows the normal Shinkansen rules, and bags over 160 cm in total dimensions need a separate oversized-baggage reservation.
Can I change or cancel my booking?
Yes. Before you pass the ticket gate, you can switch trains for free up to 4 minutes before departure, and a refund costs a 320 yen fee.
How many trains a day have Supreme Class?
Only some trains have it for now, about 12 a day in both directions as of October 2026, with more added as N700S trains roll out. Check the timetable on JR Central’s official site; smartEX only shows the option on trains that have the cabins.
When will the semi-private Supreme Class Seat start?
It is planned for fiscal 2027 (April 2027 to March 2028) in Car 10, with seats that can rotate to face each other. JR Central has not announced fares or a sales date yet.
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