What Setting Up Your First Month in Japan Actually Costs
Updated: 2026-08-23
Quick answer
Hi, I'm Miya. Your first month in Japan is front-loaded: a big lump of housing costs lands up front, then a scatter of smaller setup expenses follows in the first couple of weeks. The trick is to separate the one-time costs (deposits, furnishing) from the monthly ones (utilities, mobile) so you know what's a wall you climb once and what's a line item you'll see every month.
In this piece I'll walk through the categories in plain terms — housing, utilities, furnishing basics, and connectivity — so you can build your own budget with realistic buffers. I'm deliberately not quoting figures in the text, because prices move and vary by city; treat everything here as a planning framework, then plug in real quotes for your area.
Housing is the big front-loaded cost
Renting in Japan usually means paying several things at signing, not just first month's rent. You'll often see a refundable security deposit (shikikin), sometimes non-refundable key money (reikin) that's a gift to the landlord, an agency fee to the real-estate broker, and a required guarantor-company fee. Fire insurance and a lock-change charge are common too. Together these can add up to several months of rent due before you even get the keys.
This is the single item most worth researching before you arrive. Options like guarantor-company-only buildings, share houses, or company/school housing can shrink that upfront wall dramatically. Whatever you choose, ask the agent for a full itemized move-in cost sheet — in Japan they'll give you one — so there are no surprises at signing.
Utilities: small to start, monthly forever
Electricity, gas, and water are set up separately, and each is easy: you contact the provider (often a quick phone call or web form) around your move-in date, and someone may need to visit to turn the gas on safely. Registration itself is typically free or negligible, so utilities barely dent your first-month lump sum. Their real weight is that they recur every single month.
Budget utilities as a predictable monthly band that shifts with the seasons — heating and cooling are the swing factors. Keep the paperwork or app logins from each provider in one place, because you'll want them for autopay setup and for your address-change chores later. Think of utilities as small now, steady forever.
Furnishing an empty apartment
Most Japanese rentals come unfurnished — sometimes without even a light fixture or curtains — so plan a furnishing burst in week one. The essentials people buy first are usually a bed or futon, a fridge, a washing machine, curtains, and basic kitchen gear. You can spread this out, but arriving to a bare room means at least the sleep-and-eat basics can't wait.
You have real control over this number. Recycle shops, secondhand marketplaces, and starter appliance sets keep costs down, while buying everything new the first weekend runs high. If your stay is short, furnished apartments or share houses fold this cost into rent instead. Decide your style before you land, so furnishing is a choice rather than a panic purchase.
Connectivity as one predictable line item
Amid the one-time chaos of deposits and appliances, your phone plan is refreshingly simple: it's one predictable monthly line item, the same kind of steady cost as your utilities. That makes it easy to slot into a budget — you decide the plan once, and it just sits there as a known number each month.
What you want from that line item is for it to cover the things newcomers actually lean on hardest at the start: plenty of data, since you'll be living on maps, translation, and messaging apps, and the ability to make ordinary domestic calls to landlords, offices, and delivery services. A plan with generous unlimited data plus domestic calls handled through the Rakuten Link app turns connectivity from a worry into a single, stable number you rarely have to think about again.
Getting connected on day one
So here's how connectivity fits your first-month plan, from me, Miya. You can't contract a Japanese SIM before you land, because a domestic number is tied to the residence card you only receive on arrival. But once you have that card, sorting your number is quick — and worth doing early, because your address registration, banking, and app sign-ups all lean on having a Japanese number.
Rakuten Mobile, for example, can be applied for online with just your residence card, and an eSIM can be issued the same day — often in about five to ten minutes, with no store visit. That means your mobile becomes a settled monthly line item almost as soon as you arrive, while you focus your energy and cash on the big front-loaded stuff like housing. Plan the lump sums, land, get your card, then get connected.
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