Updated October 2026
Japan Home Internet for Foreigners:
Router, Fibre or Pocket WiFi
The monthly prices are almost identical. What separates these three is the initial fee, the wait before it works and whether your landlord has to say yes.
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Japan home internet for foreigners comes down to three products, and the English-language provider we link is Sakura Mobile: a plug-in Home WiFi router at ¥6,980/month (¥7,678 tax included) with a ¥5,500 initial fee and installation stated as “Right away”; Fiber Internet 1 Gbps at the same ¥6,980/month but with a ¥5,500–25,300 initial fee and a wait of “1 week to 1 month”; and Fiber Internet 10 Gbps at ¥9,480/month (¥10,428 tax included), “2 weeks to 1 month”. All three are published with “No annual contract” — which is the clause that matters, because the standard Japanese fixed-line offer is a two-year tie-in. For a stay of a year or less, or a building that will not take a line, the monthly Pocket WiFi is ¥4,980/month for 100 GB and ¥6,480 for 200 GB. No Japanese bank account and no Japanese credit card are needed for any of them, and the provider offers a bridge rental while a fibre installation is pending. All figures read off sakuramobile.jp on 29 Oct 2026.
Fastest to working
Home WiFi, ¥6,980/mo
Fibre wait
1 week to 1 month
Contract
No annual contract
Japanese card needed?
No — international card
In short: on a one-year stay take the plug-in Home WiFi router — same monthly price as 1 Gbps fibre, a flat ¥5,500 initial fee instead of up to ¥25,300, nothing to install and no landlord to ask. Choose fibre if you will be in the same flat for two years or more, or if more than one person works from it. Choose the monthly pocket WiFi if you expect to move, or if the building refuses a line.
How Can a Foreigner Get Home Internet in Japan?
Through a provider that sells the line and the internet service as one English-language monthly contract, rather than the usual Japanese arrangement of a fibre carrier plus a separate ISP on a two-year tie-in. Here is the whole choice, with the column most people skip — the wait — in the middle.
| Option | Monthly | Up front | Time until it works | Installation | Who it suits |
|---|---|---|---|---|---|
| Home WiFi (plug-in home router) | ¥6,980/month (¥7,678 tax incl.) | ¥5,500 initial fee | Stated as "Right away" — from the moment the device arrives | None. It is a rental device you plug into a power socket | A one-year lease, a sharehouse room, anything where you cannot or will not arrange building work |
| Fiber Internet, 1 Gbps | ¥6,980/month (¥7,678 tax incl.) | ¥5,500–25,300 initial fee, depending on the property | "1 week to 1 month" | Remote or physical, depending on the building; some properties skip it entirely | Two years or more in one flat, or a household where several people work from it at once |
| Fiber Internet, 10 Gbps | ¥9,480/month (¥10,428 tax incl.) | ¥5,500–25,300 initial fee | "2 weeks to 1 month" | As above, and not available in every building | Large uploads, multiple 4K streams, a home office that bills by the hour |
| Monthly Pocket WiFi, 100 GB | ¥4,980/month (¥5,478 tax incl.) | ¥5,500 activation fee | Delivered, or collected on a passport at an airport counter | None, and it leaves the flat with you | A six-month stay, a move you expect, or a building that refuses a line |
| Monthly Pocket WiFi, 200 GB | ¥6,480/month (¥7,128 tax incl.) | ¥5,500 activation fee | Same | None | The same reader with a laptop on it all day, where 100 GB would not last the month |
| Tethering a mobile data plan | ¥10,480/month for 100 GB (¥11,528 tax incl.) | ¥5,500 activation fee | None | None | Nobody, as a home line — it is the most expensive row here and the allowance is capped |
Every figure is Sakura Mobile's own, read off its published home internet, pocket WiFi and monthly price pages on 29 Oct 2026; the initial-fee range on fibre is the company's, because what a property needs is what moves it. The tethering row uses the resident Data Only plan's published 100 GB price from the same list. Our long-term stay SIM guide covers the phone side, and best pocket WiFi for Japan compares the two short-term rentals we link.
How Long Does Fibre Installation Take in Japan?
“1 week to 1 month” for the 1 Gbps service and “2 weeks to 1 month” for 10 Gbps, on the provider's own published figures — and the variable is the building, not the carrier. A block already wired for fibre with a socket in the room can sometimes be activated remotely, which is the one-week end of that range. A building that needs new cabling means an engineer visit, a management-company approval and the far end of it.
Two things follow. First, order on the day the tenancy is confirmed rather than the day you move in: the clock starts when the order is accepted, and a Japanese lease start date is usually known weeks in advance. Second, ask for the bridge rental the provider offers while an installation is pending — it is far easier to arrange at the point of ordering than in week three of working from a café. Neither of those is a price decision, and both cost more than any price decision on this page if you get them wrong.
It is also the strongest argument for the plug-in router on a shorter stay. Home WiFi is published as working “Right away” from the moment the device arrives, with no installation at all — which on a twelve-month tenancy means you are paying for twelve months of internet rather than eleven. Read on 29 Oct 2026.
What Should You Check Before You Sign?
Six clauses, and the first is the one that makes this a different product from a domestic Japanese fixed-line contract. Everything in the middle column is published by the provider; the right-hand column is why it matters to someone who did not grow up with Japanese tenancy paperwork.
| What to check | What is published (read 29 Oct 2026) | Why it matters |
|---|---|---|
| Contract length | All of the home options are published with "No annual contract", and Home WiFi adds "no subsidized device, no early-termination penalty". | The standard Japanese fixed-line offer is a two-year tie-in with a cancellation fee, which is the single worst clause to sign on a one-year visa. This is the specification to compare any alternative against. |
| Coverage | Fibre is published as reaching "over 90% of Japan"; the Home WiFi service the "majority of Japan". | Neither is universal, and the gap is the reason to check your exact address before you plan around either — a rural placement is a different question from a Tokyo ward. |
| What is in the box | The fibre package is published as including the wireless router, the modem and the ISP. Home WiFi is a rental device with nothing to buy. | In Japan the line and the internet provider are normally two separate contracts in Japanese. One bill covering both is most of what the extra monthly cost buys. |
| Speed, as published | Maximum speeds of 1 Gbps and 10 Gbps on the two fibre tiers, with the company's own caveat that "actual customer speeds are not guaranteed". | Worth quoting because a headline figure on a shared building line is a ceiling, not a rate. Treat it as the difference between the tiers rather than as what you will measure. |
| Language | English support throughout, and a bilingual team offered for questions and concerns involving your landlord. | The part of a Japanese fibre order that actually stalls is rarely the paperwork — it is the phone call to a management company that needs permission for a drilled wall. |
| The gap before it is live | A bridge rental is offered while a fibre installation is pending. | Ask for it when you order rather than when you notice. A month without a line in a flat you work from is the one cost no price table shows. |
The landlord row is the one that catches people, and it is worth being concrete about why. A physical fibre installation can mean running cable into the flat, which is a change to somebody else's building and therefore a management company's decision rather than yours. Some buildings are pre-wired and some activations are remote, which is exactly why the published lead time is a range. If permission looks slow or unlikely, the plug-in router and the monthly pocket WiFi both avoid the question entirely.
What Covers the Flat Before the Line Is Live?
A Japanese tenancy almost never starts with a working connection, and a fibre order is published at one week to one month. Ask the provider for its bridge rental first — then these are the no-contract ways to have the flat online on the night you get the keys.
- ▸Klook Japan eSIM — Sakura Mobile puts a fibre installation at one week to one month, and a Japanese tenancy almost never starts with a live line — a travel eSIM is the no-contract way to have the flat online on the night you get the keys. See eSIM options on Klook →
These go to Klook, which pays us a commission at no extra cost to you. Prices and availability are Klook's — we do not quote them here because its product pages block automated checks.
Is a Home Router Better Than Fibre for a 1-Year Stay?
For most one-year stays, yes — and not because of the monthly price, which is identical. Home WiFi and Fiber Internet 1 Gbps are both published at ¥6,980/month (¥7,678 tax included). The difference is everything around it: a flat ¥5,500 initial fee against ¥5,500 to ¥25,300, nothing to install against a one-week-to-one-month wait, and no landlord conversation against a possible one.
Across twelve months that is up to about ¥20,000 and as much as three weeks of a tenancy you are already paying rent on, in exchange for a line that is faster on paper. Both services are published with no annual contract, and Home WiFi adds “no subsidized device, no early-termination penalty” — so the shorter-commitment option is not being paid for with a worse exit.
Fibre earns its place in three cases, and they are worth being honest about. Two years or more in the same flat, where the installation fee amortises and the stability is simply better. A household where two or three people work from it at the same time. And work that uploads large files — video, photography, backups — where the asymmetry of a wireless home router shows up fastest. If you are in one of those, the 10 Gbps tier at ¥9,480/month (¥10,428 tax included) is the one to price, remembering the published maximum is a ceiling and the provider states actual speeds are not guaranteed.
Can You Get Internet in Japan Without a Japanese Credit Card?
Yes, and it is the clause that decides whether this is something you arrange in your first month or your third — because a Japanese bank account normally wants a residence card and a contactable phone number before it will open.
| How you pay | What is published (read 29 Oct 2026) | What it means |
|---|---|---|
| International credit or debit card | Published as "most credit and debit cards, including international ones", naming VISA, MasterCard, Discover, JCB, AMEX and Diners Club. | No Japanese card and no Japanese bank account — which is what makes this orderable in your first month rather than your third. |
| Cash at a convenience store (Smart Pit) | Monthly payment with a Smart Pit number at Lawson, Family Mart, Mini Stop and others. | It carries a deposit of two months' fees on the data and WiFi plans, so the card route is cheaper to start. |
| Japanese bank account | Not required for any of the monthly plans. | Useful to know in the order you do things: the account usually needs a residence card and a phone number first anyway. |
If you are arriving on a working-holiday or student status, the order of operations is the real subject and we have written it out separately: our working holiday SIM card guide follows the residence card, the 14-day address registration and the bank account in the order they unlock each other, and our long-term stay SIM guide makes the wider case for a resident plan over a travel one. Home internet is the one item on that list you can order with a foreign card on day one.
How Do You Get It Set Up, In Order?
Find out what the building already has
Ask the agent or the management company two questions before anything else: is the building already wired for fibre, and is there an existing in-room socket. A pre-wired building is where a fibre order is a one-week remote job; a building that needs new cabling is where it becomes a month and a landlord conversation.
Count the months you will live there
Under a year with any chance of a move, the no-installation options win on arithmetic alone: Home WiFi at ¥6,980/month with a ¥5,500 initial fee, or the monthly Pocket WiFi at ¥4,980 for 100 GB. Two years or more in the same flat, and fibre's installation fee — ¥5,500 to ¥25,300 depending on the property — amortises away.
Order before you move in, not after
Fibre is published at "1 week to 1 month" for 1 Gbps and "2 weeks to 1 month" for 10 Gbps, and that clock starts when the order is accepted, not when you get the keys. If the tenancy start date is known, the order can be too.
Ask for the bridge
A bridge rental is offered while a fibre installation is pending. It is the difference between a month of working from a café and a month of working from the flat you are paying for, and it is easier to arrange at the point of ordering.
Get the landlord question answered in writing
Physical installation can mean drilling, and a Japanese management company will want to approve it. The bilingual team is offered for exactly this conversation — use it, and get the answer before the engineer is booked rather than on the day.
Keep a mobile fallback for the first fortnight
A travel eSIM costs from $3.99 across the four providers we price and needs no contract, which is the cheapest way to have the flat online on the night you get the keys. If several devices need it at once, an airport-counter pocket WiFi rental covers up to 5 and the hotel-delivery one up to 10.
Common Questions
1. How can a foreigner get home internet in Japan?
2. How long does fiber installation take in Japan?
3. Is a home router better than fiber for a 1-year stay?
4. Can I get internet in Japan without a Japanese credit card?
5. Do I need my landlord's permission for home internet in Japan?
6. What about a six-month lease or a sharehouse?
7. Can I just tether my phone instead?
8. What do I use while I wait for the line?
9. Is the unlimited home internet really unlimited?
10. What does the first month actually cost?
Get the flat online without a two-year contract
A plug-in router from ¥6,980/month that works the day it arrives, or fibre at the same price with a one-week-to-one-month wait — both published with no annual contract, both payable on an international card. A pocket WiFi covers the gap in between.