A family guide to Japan train tickets
Checked against 7 official sources. 8 minute read.
What to know first
Under JR Central's rules, ages 12 and over pay adult fares and ages 6 to 11 pay child fares, with school-age exceptions only for schools established under Japanese law. Child fares and reserved-seat charges are half the adult price; up to two children aged 1–5 travel free with each paying passenger, as long as they don't take their own reserved seat. A younger child who would otherwise travel without a fare still needs a child ticket to sit in their own reserved seat. Discounts don't cover every charge (JR East treats Green Car, GranClass and sleeper charges separately), and the Japan Rail Pass has its own child rules tied to the payment or Exchange Order date.
Two things change what you pay: whether a child under 6 takes their own reserved seat (then they need a child ticket), and whether you buy a Japan Rail Pass, which uses the child's age on the payment or Exchange Order date rather than the travel date.
- Ages 6 to 11
- Child fare: half the adult priceAges 12 and over pay adult fares
- Ages 1 to 5
- Up to two travel free with each paying passengerA child ticket is needed for their own reserved seat
- Tokyo–Kyoto by Nozomi
- ¥13,970 adult, ¥6,980 childsmartEX reserved seat, regular season
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On this page
What ticket does each child need?
| Your situation | What to do |
|---|---|
| Babies under 1, or the first two infants aged 1–5 | Babies under 1 travel free on a lap or sharing a seat; the two-infant limit counts children aged 1–5. Up to two infants aged 1–5 travel free with each paying passenger. A baby or infant needs a child ticket for their own reserved seat or berth; Green Car charges are not halved. |
| Third infant aged 1–5, or an unaccompanied infant | 1–5, the third or later with one paying passenger, or travelling alone: a child ticket, whether on a lap or in their own seat. |
| Age 6 before Japanese elementary school | 6-year-olds not yet at elementary school count as infants (only for schools under Japanese law), so the rules above apply. |
| Ages 6–11 | 6–11: a child ticket at half price, on a lap or in a seat; in the Green Car, half the fare plus the full Green charge. |
| Age 12 at Japanese elementary school | 12-year-olds still at a Japanese elementary school: a child ticket. |
| Other travellers aged 12 or over | 12 and over, including 12-year-olds at overseas schools: an adult ticket. |
| Buying a child Japan Rail Pass | Japan Rail Pass: a child pass if the child is aged 6–11 on the purchase or Exchange Order date; elementary pupils aged 12 or over need an adult pass. |
Use the child's age on the travel date. For the Japan Rail Pass, use the age on the purchase or Exchange Order date instead.
Sources for this section: JR Central: adults, children, infants and babies · JR East: child fares and charges · JAPAN RAIL PASS: child-price conditions · SmartEX: when an infant needs a ticket
Ask about the child and the seat separately
Before buying, identify the child's age on the relevant date, whether they need their own seat, the train operator and the exact ticket or pass. A statement that a young child can travel without a fare does not answer whether a reserved seat is included.
This guide helps you plan ticket purchases rather than providing individual fare quotes. It distinguishes standard train tickets from special rail passes and does not assume your home country's school age system matches Japanese travel exceptions.
The school-age exception applies only in specific cases
JR Central normally classifies ages 12 and above as adult and ages 6–11 as child. A 12-year-old still in elementary school falls in the child category; a 6-year-old who has not entered elementary school falls in the infant category. JR Central limits these school exceptions to schools established under Japanese law. Infant classification does not by itself provide a free reserved seat.
Do not select a cheaper age category solely because an overseas school calls the child an elementary pupil. Ask the ticket issuer which category applies to the actual child, travel date and product, and retain the answer with the booking information.
Sources for this section: JR Central: adults, children, infants and babies
Booking an infant their own reserved seat changes the ticket requirements
JR Central names chargeable exceptions for young children, including using their own reserved seat or certain other accommodations, an infant travelling alone, and additional infants beyond the stated accompanied allowance. Check the exact combination rather than reducing the rule to 'under six is free'.
Start with your family's travel comfort. Only consider a lap-seating plan if the adult can manage comfortably for the entire trip; fare rules define pricing, not how easy it is to hold a child or handle luggage.
Sources for this section: JR Central: adults, children, infants and babies
Not every fare component receives the same discount
JR East's official child-ticket rules distinguish base fares and basic train charges from Green Car, GranClass, and sleeper fees. This distinction matters whenever a booking screen bundles multiple fares into a single total—a headline child discount does not mean every component is discounted.
Write down the total for the specific seat arrangement, including adults and children together. If a booking system only shows a combined amount, ask what it covers before comparing it with another product's headline price.
Sources for this section: JR East: child fares and charges
A rail pass has its own age and purchase rules
The JAPAN RAIL PASS price page has separate child-price provisions tied to online payment or Exchange Order issue dates, and says elementary pupils aged 12 or older are adults. Read that product's wording instead of transferring ordinary-ticket exceptions into a pass purchase.
If a child's birthday falls near the date of purchase or travel, note the exact dates clearly rather than assuming eligibility based on their age today. You do not need to record a child's full name or date of birth in your shared trip notes merely to log the reminder to confirm the correct child ticket product with the issuer.
Sources for this section: JAPAN RAIL PASS: child-price conditions
Plan seat choices and connections together as a family
Check how many seats your family needs on each leg, who carries each ticket, and whether transfers involve a different railway operator or fare type. Do not assume child age rules or seating arrangements carry over between trains.
Allow time to consult station staff before boarding. A confirmed booking, child fare, or group ticket does not guarantee seats side by side. If sitting together is a priority, secure it during booking rather than relying on train swaps.
A helpful record to keep before buying
Keep a short note containing the operator, date, ticket product, number of accompanying adults, requested seat arrangement and any age-category question still open. Link to the responsible ticket page and record the date you checked it.
If a travel date changes, use the child's age on the new date. Keeping these details handy helps answer questions at the gate or ticket window—never assume a child permanently qualifies for the same fare tier.
Worked examples: what a family actually pays
Example A: two adults, an 8-year-old and a 4-year-old, Tokyo to Kyoto by Nozomi on smartEX (reserved seats, regular season). Each adult is in the adult category (12+) and pays ¥13,970 for a smartEX reserved seat. The 8-year-old is a child (6–11) and pays ¥6,980 for a smartEX child reserved seat. The 4-year-old is an infant (1–5) and rides free on a lap. Total: ¥34,920. If the 4-year-old takes their own seat, they need a child ticket too: add ¥6,980, for a total of ¥41,900.
Peak season adds ¥200 per adult and ¥100 per child, and super-peak season adds ¥400 and ¥200 (SmartEX fare table, as of 1 April 2025). Our judgement: a ride of 2 h 15 min with a 4-year-old on your lap is manageable for most families; for longer legs, the extra ¥6,980 for a seat is usually worth it.
Example B: the same family buying paper tickets at a station. The adult fare is ¥14,170 (Nozomi reserved, regular season, from JR West's fare search). JR halves the child basic fare and the child limited express charge separately and rounds each down to ¥10, which by our calculation gives about ¥7,080 per child ticket. At the counter, ask for “2 adults, 1 child”, plus “1 more child” if the 4-year-old needs a seat.
Example C: one adult with a 5-year-old, a 3-year-old and a 1-year-old, all on laps. The first two infants ride free and the third needs a child ticket. Two adults could take all three free, because the allowance is two per paying passenger.
Sources for this section: SmartEX: fare table for reserved seats · JR Central: adults, children, infants and babies · SmartEX: when an infant needs a ticket
Your next step
1. Write each child's age on each travel date, and decide for each leg: lap or own seat?
2. Match each child to a line of “What ticket does each child need?” and add up the leg using Example A's prices (Tokyo–Kyoto on smartEX: ¥13,970 adult, ¥6,980 child).
3. When booking on SmartEX, enter children under “Number of persons”. To board by IC, link a child IC card to each child seat; otherwise, send each child's QR ticket to the phone of the adult travelling with them.
Sources for this section: SmartEX: fare table for reserved seats · SmartEX: child reservations and IC boarding
Key facts and when we'll check them again
Age categories: adult 12+, child 6–11, infant 1–5 and baby under 1, with school exceptions only for schools under Japanese law. Child discount: the basic fare, limited express, express and reserved-seat charges are halved and rounded down to ¥10, while Green, GranClass and sleeper charges are the same as for adults. The third or later infant aged 1–5 with one paying passenger needs a child ticket. A baby or infant using their own reserved seat or berth also needs a child ticket; Green Car charges are not halved. Checked on 11 October 2026 with JR Central, JR East and SmartEX; we'll check it again by 8 January 2027.
Tokyo–Kyoto by Nozomi, smartEX reserved, regular season: ¥13,970 adult and ¥6,980 child (SmartEX fare table as of 1 April 2025, checked on 11 October 2026); we'll check it again by 8 January 2027.
JR Pass for a child (7-day Ordinary): ¥25,000 when bought online through the official JAPAN RAIL PASS Reservation site, or ¥27,000 through an overseas JR-designated agency. The child price applies to ages 6–11 on the online payment date or Exchange Order issue date. Checked on 22 October 2026; we'll check it again by 11 November 2026.
Child Welcome Suica: the child's passport is needed and there is no deposit. It is valid for up to 28 days including the purchase date, within the child-fare age limit of 31 March after the 12th birthday. A SmartEX child reservation needs a child IC card for IC boarding; otherwise use the QR ticket or paper. Checked on 11 October 2026 with JR East and SmartEX; we'll check it again by 8 January 2027.
Sources for this section: JR Central: adults, children, infants and babies · JR East: child fares and charges · SmartEX: when an infant needs a ticket · SmartEX: fare table for reserved seats · JAPAN RAIL PASS: child-price conditions · JR East: buying a Welcome Suica · SmartEX: child reservations and IC boarding
Japan train child fares: age categories, free travel and reserved seats
What age counts as a child on trains in Japan?
On JR, ages 6–11 pay child fares and 12+ pay adult fares. Ages 1–5 are infants and under-1s are babies, and both usually ride free. There are two exceptions, and they apply only to schools under Japanese law: a 12-year-old still in elementary school pays the child fare, and a 6-year-old not yet in school counts as an infant. Use the child's age on the travel date; for the Japan Rail Pass, use the age on the purchase date.
Does a free child need a ticket for a reserved Shinkansen seat?
Yes. An infant or baby who takes their own reserved seat, a Green Car seat (except non-reserved Green) or a bed needs a child ticket: ¥6,980 for Tokyo–Kyoto by Nozomi on SmartEX. If they sit on your lap, they ride free, up to two per paying passenger.
Can a tourist get a child Suica or other child IC card?
Yes. JR East sells a child Welcome Suica at its Travel Service Centers and at Narita and Haneda (Terminal 3) ticket machines. Bring the child's passport for the age check; there's no deposit. It lasts 28 days and works until the 31 March after the child's 12th birthday. The child pays child fares on local trains, and a child IC card is also what SmartEX requires to link a child's reservation for IC boarding (see our SmartEX boarding guide).
How should a family mix child fares, reserved seats and rail passes?
Price each leg by person: adults pay adult fares, 6–11s pay half, and under-6s are free unless they take a seat. A child Japan Rail Pass (7 days, Ordinary) costs ¥25,000 when bought online through the official JAPAN RAIL PASS Reservation site, or ¥27,000 through an overseas JR-designated agency. The child price applies to ages 6–11 on the online payment date or Exchange Order issue date. Children on the same family trip can mix pass and ordinary tickets. Our judgement: compare the pass for the adults first, because a child pass rarely changes the verdict (see the JR Pass worked examples).
Are Green Car seats half price for children?
No. The child pays half the basic fare, but the Green Car charge, GranClass and sleeper charges are the same as for an adult (JR Central, JR East). A Green Car seat for a child therefore costs well over half the adult price.
Related decision guides
Official pages for this guide
The rules in this guide come from the official pages below. Japan, Booked. does not book or submit requests on your behalf.
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Sources and how this guide was checked
Published · Based on official sources · no affiliate links
Official sources
These official sources explain the rules and conditions used in this guide. Live availability and your own booking, admission or service outcome still need to be confirmed for your trip.
- JR Central: adults, children, infants and babies
What this confirms: JR Central applies child fares to 12-year-old primary students and infant classifications to 6-year-olds not yet in primary school only for schools chartered under Japanese law. Separate conditions apply to reserved seats and rail passes.
Last checked - JR East: child fares and charges
What this confirms: JR East bases child fares on elementary-school criteria in Japan’s school system. It treats basic child fare components separately from Green Car, GranClass and sleeper charges, so not every component is half price.
Last checked - JAPAN RAIL PASS: child-price conditions
What this confirms: This rail pass has its own child-fare age guidelines based on the payment date or Exchange Order issue date, which differ from ordinary train ticket school-age exceptions and travel-day age assumptions.
Last checked - SmartEX: fare table for reserved seats
What this confirms: The smartEX reserved-seat fare from Tokyo to Kyoto by Nozomi in the regular season is JPY 13,970 for adults and JPY 6,980 for children; peak season adds JPY 200 per adult and JPY 100 per child, and super-peak season JPY 400 and JPY 200.
Last checked - SmartEX: when an infant needs a ticket
What this confirms: Up to two infants travel free with each paying passenger. An infant needs a child ticket when they use their own reserved seat, as the third or later infant with one passenger, or when travelling alone.
Last checked - SmartEX: child reservations and IC boarding
What this confirms: A child reservation needs a child IC card for IC boarding; otherwise the child uses the QR ticket or a paper ticket collected with the pickup code.
Last checked - JR East: buying a Welcome Suica
What this confirms: A child Welcome Suica is sold at JR East Travel Service Centers and at Narita and Haneda (Terminal 3) ticket machines. The child's passport is needed for the age check, there is no deposit, the card lasts 28 days, and it works until the end of March after the child's 12th birthday.
Last checked
About this guide
Distinguish child fare categories, reserved-seat requirements and rail pass age limits. Check the specific operator's ticket rules before buying family train tickets.
This guide can't give you a live quote, hold a booking, or tell you whether you personally qualify or whether something suits your trip.
How we checked this
Sources and limits of this guide
These dated notes clarify what is confirmed by official sources—and what you still need to verify yourself.
If columns are cut off, scroll sideways. Keyboard: focus the table, then use Left/Right Arrow keys.
| Question | What we found | Where it comes from | What this means for your trip |
|---|---|---|---|
| What do JR Central's rules define for adults, children, toddlers, and infants? | JR Central applies child fares to 12-year-old primary students and infant classifications to 6-year-olds not yet in primary school only for schools chartered under Japanese law. Separate conditions apply to reserved seats and rail passes. | JR Central: adults, children, infants and babies | This applies only to the scope stated. |
| What do JR East child fare and ticket rules confirm? | JR East bases child fares on elementary-school criteria in Japan’s school system. It treats basic child fare components separately from Green Car, GranClass and sleeper charges, so not every component is half price. | JR East: child fares and charges | This applies only to the scope stated. |
| What do the JAPAN RAIL PASS child-fare rules cover? | This rail pass has its own child-fare age guidelines based on the payment date or Exchange Order issue date, which differ from ordinary train ticket school-age exceptions and travel-day age assumptions. | JAPAN RAIL PASS: child-price conditions | This applies only to the scope stated. |
| Does published guidance determine the outcome for your specific case? | No. The cited instructions establish specific facts, not a reservation, current capacity, completed transaction or personal suitability. | The cited statements based on official sources above. | Keep missing conditions still unconfirmed and ask the responsible party before committing. |
Based on official sources, linked below.
Guide updates Reviewed
When this guide was checked and what changed
- First published
- Last checked
- Check again by
- What we checked
- JR Central and JR East child-fare rules, SmartEX fare tables and FAQs, JR East's Welcome Suica page and the JAPAN RAIL PASS price page were checked on 8 October 2026. Example fares use the SmartEX table as of 1 April 2025; an individual child's category and seat availability are not checked.
- Latest update
- : Rechecked on 11 October 2026: the dated facts in this guide were compared with their primary sources (the per-source dates and the review date stay as they were until the source list is updated). Nothing had changed.
The date above reflects when these checks were last run. If an individual source was rechecked later, you’ll see that date next to it below. Other copy edits are listed in the update history.
Who edits this guide
One editor looks after this guide
Japan, Booked. is run and edited from Japan. The same editor checks the Japanese and English sources, writes the traveller-facing guidance and keeps the correction history up to date.
What changed
Update history
- Scheduled recheck
Rechecked on 11 October 2026: the dated facts in this guide were compared with their primary sources (the per-source dates and the review date stay as they were until the source list is updated). Nothing had changed.
- Added family worked examples and an age chooser
Added three priced family examples, a ticket-by-age chooser, a next-step list and key facts with check dates; put the half-price and free-infant rules in the opening answer and answered five traveller questions directly. JR Central, JR East, SmartEX and JAPAN RAIL PASS sources were rechecked on 8 October 2026.
- Explained school-age exception outcomes
Verified with JR Central on September 25; details child and infant fare categories under Japanese education-law exceptions without assessing individual eligibility.
- Official source verification
We verified JR child fares, individual seat reservation requirements, and Japan Rail Pass age rules against current official first-party guidance, without making assumptions about individual traveler eligibility.
- Source-reviewed publication
Published an independently reviewed guide with dated primary sources, a clear scope and limitations, and links to help you plan your next steps.
If an operator, organiser or product changes in a way that affects the guide, we check it again sooner. Reader reports help us spot what to investigate, and we verify them against current official information before publishing. Read our update and corrections policy. See every guide's review schedule. Suggest an improvement to this guide.