How much money should you save before moving to Japan? A real-numbers breakdown ($8k–$22k)

The short version. If you’re moving from the US to Japan, save $8,000–$15,000 as a single person and $13,000–$22,000 as a couple before your first Japanese paycheck lands. The biggest bite isn’t the flight — it’s the Japanese apartment move-in, which typically runs 4–6 months’ rent upfront in cash. Regional cities (Osaka, Fukuoka) cut that by 25–35% versus Tokyo. And don’t forget the US-side costs that keep running after you leave: your phone number, subscriptions, and loans. I’m not a financial advisor — this is my own research plus what I learned the hard way moving the other direction. Verify every figure against current sources before you commit.

The one number, by scenario

Here’s the all-in savings target, broken into move-in + setup, a three-month living buffer for the gap before your first paycheck, and the US-side costs that follow you. Figures assume roughly ¥150/USD — check the current rate, because a weaker yen changes everything.

Scenario	Move-in + setup	3-mo living buffer	US-side (3 mo)	Total target
Single → Tokyo	$4,500–$8,000	$3,400–$4,800	$300–$600	$8,200–$13,400
Single → Regional	$3,200–$5,500	$2,100–$3,700	$300–$600	$5,600–$9,800
Couple → Tokyo	$7,000–$13,000	$4,600–$6,800	$400–$900	$12,000–$20,700
Couple → Regional	$5,000–$9,000	$3,400–$5,400	$400–$900	$8,800–$15,300

One honest warning before we go line by line. When I moved abroad, I set a number and the real bill came in at nearly double my estimate — the big-ticket item alone blew past what I’d planned by 50–100%. Budgets for international moves run over. Whatever your line-item total says, hold the top of the range, not the bottom.

Where the money actually goes: the Japanese apartment

This is the part that surprises Americans. Japanese rentals don’t work like a US lease where you pay first month plus a deposit. You pay a stack of upfront fees, several of which you never get back. The rule of thumb is 4–6 months’ rent in cash before you get the keys.

Upfront item	Typical cost	Refundable?
Shikikin (security deposit)	1–2 months’ rent	Yes, minus cleaning/repairs
Reikin (key money)	0–2 months’ rent	No — a “gift” to the landlord
Agency fee	0.5–1 month + 10% tax	No
Guarantor company	0.5–1 month upfront (+¥10k–¥20k/yr renewal)	No
Fire insurance	¥15,000–¥20,000 (2-year policy)	No
Cleaning fee	¥10,000–¥30,000	No

For an ¥80,000/month Tokyo apartment, that’s ¥320,000–¥600,000 in move-in cash — roughly $2,100–$3,900. Two things to know as a foreigner: reikin is declining on many foreigner-friendly listings — but around 54.5% of Tokyo properties still charge it as of 2024, meaning the majority still pay it even as the trend heads downward (source). And without a Japanese co-signer you’ll almost certainly need a guarantor company, which is a required cost, not optional.

Decision support:

• If you want to minimize upfront cash → filter listings for reikin = 0 and consider a share house or monthly guest house (¥50,000–¥80,000/month, all-inclusive) for your first 1–3 months. That buys you time to apartment-hunt in person instead of signing a 4–6-month cash commitment sight unseen.
• If you’re moving regional → your move-in cash drops proportionally with the lower rent, and it’s worth checking whether Japan’s relocation subsidy applies to you (¥600,000 for singles, ¥1,000,000 base for households — plus ¥1,000,000 per child under 18, increased from ¥300,000 in April 2023, so a family with two children could receive up to ¥3,000,000 — but eligibility for foreign residents needs verifying with the specific municipality; don’t count on it in your budget). (source)

Furniture, and the months before your first paycheck

Japan runs on 100V — the same Type A plug shape as the US, so no adapter is needed. Most modern US electronics (phones, laptops, USB-C chargers labeled 100–240V) work fine without a converter. The real issue is high-wattage heating appliances: hair dryers, irons, and rice cookers rated for 120V only will underperform or fail at 100V, so plan to replace those. (See the full US–Japan plug and voltage compatibility guide.) A full setup for a 1K/1DK (bed, fridge, washer, curtains) runs ¥150,000–¥300,000 ($1,000–$2,000) new. A “light furniture” package from Nitori or IKEA, or second-hand off Mercari and Hard Off, can bring that down to ¥50,000–¥100,000. When I furnished a place abroad, buying second-hand from other departing expats cut my furniture bill dramatically — that community-hand-me-down route is the single biggest setup saving there is.

Then there’s the gap before payday. Monthly living costs for a single person:

Category (single)	Tokyo	Regional (Fukuoka)
Rent (1K–1DK)	¥60,000–¥120,000	¥40,000–¥75,000
Food	¥38,000–¥45,000	~¥35,000
Utilities	¥9,000–¥13,000	¥9,000–¥13,000
Transport	¥10,000–¥15,000	¥8,000–¥12,000
Mobile (Japan SIM)	¥2,000–¥5,000	¥2,000–¥5,000
Total/month	¥168,000–¥240,000	~¥105,000–¥183,000

A couple sharing a 1LDK adds roughly ¥40,000–¥60,000/month in Tokyo. Hold three months of this as your buffer — that’s the “before first paycheck” money in the table above.

One Japan-specific trap: National Health Insurance doesn’t activate the day you land. You enroll at city hall after your residence card is registered, and there can be a gap of days to weeks before coverage kicks in. An out-of-pocket medical bill in that window can be expensive — I’ve watched an unplanned medical event abroad turn into a $3,000 bill, so this buffer is not theoretical.

The US-side costs that don’t stop when you leave

These are small per month but easy to forget, and one of them is genuinely critical.

Your US bank and brokerage logins are almost certainly tied to your US phone number for two-factor authentication. Lose that number and you can get locked out of your own US bank from abroad — a problem that costs hours of phone support to fix, if it’s fixable at all. This is exactly why I plan to keep my own US number alive after leaving: nearly every US account I hold authenticates through it. A cheap real-mobile plan runs about $5–$8/month. Tello runs on T-Mobile’s network with real mobile numbers (not VoIP, which many banks reject), plans start at $5/month with no contract, and Wi-Fi calling works from Japan with no roaming. It’s one option — read why you should keep a US number for 2FA before deciding.

(Full disclosure: the Tello links here are a referral — you and I each get $10 in Tello credit if you sign up through them. It costs you nothing extra, and I’d have suggested a real US number either way.)

The rest:

• Subscriptions (Netflix, Spotify, iCloud): $30–$100+/month. Audit before you go — some auto-cancel when your card’s billing address changes.
• Credit cards: $0–$550/year in annual fees. Keep the no-foreign-transaction-fee ones; here’s how to keep US credit cards after moving to Japan.
• Student loans: income-driven plans may recalculate once your US income drops.

Budget $300–$600 per person for three months of US-side costs. Small, but real.

A quick decision guide

• Single, moving to Tokyo, salaried job waiting? Target the $8,200–$13,400 range, land on the high end if your move-in apartment charges reikin.
• Single, flexible on location? Move regional and aim for $5,600–$9,800 — same quality of life, 25–35% less cash.
• Couple? Add a partner’s living costs and US-side line; $12k–$21k Tokyo, $9k–$15k regional.
• Cash-tight? Start in a monthly guest house, buy furniture second-hand, and pick a reikin-free listing. You can shave $2,000–$3,000 off the setup number without much pain.

FAQ

Is $10,000 enough to move to Japan?

For a single person moving to a regional city with a job lined up, yes — $10,000 comfortably covers move-in, furniture, and a three-month buffer. For Tokyo, $10,000 is workable but leaves little margin, and for a couple it’s tight in any city. Budget for the top of the range, because international moves reliably cost more than the estimate.

What’s the single biggest cost of moving to Japan?

The apartment move-in, not the flight. Japanese leases front-load 4–6 months’ rent in deposit, key money, agency, and guarantor fees — often $2,000–$4,000 in cash before you get the keys. A one-way flight is only $500–$1,500 by comparison.

Do I really need to keep my US phone number?

If you have US bank or brokerage accounts, effectively yes — most of them send 2FA codes only to a US mobile number, and losing it can lock you out. A $5-ish/month plan keeps it alive. This also matters for your first tax year after leaving the US, when you’ll still be logging into US financial accounts to file. Confirm the details against official sources and, for anything tax-related, a professional — this is my research, not individual advice.