South Korea→
JapanRelocate from South Korea to Japan
What it takes to move from South Korea (anchored to Seoul) to Japan (anchored to Tokyo). Cost delta, salary required, scoring on four axes, and the operator's tooling stack.
Relocating from South Korea to Japan shows an 11% uptick in total value, driven by a 5-point quality improvement, with Tokyo emerging as the clear winner destination.
Japan's relocation appeal outpaces South Korea by roughly one-tenth across measurable factors, positioning it as a meaningful but not dramatic upgrade for movers.
If lifestyle balance matters to you, audit the specific quality gains in housing, healthcare, or work culture before committing—the overall 11% gain masks where improvements actually concentrate.
The decision picture
Moving to Japan, at a glance
Cost delta: Seoul → Tokyo
Each category is normalized to KRW using a 1 JPY = 8.8095 KRW reference rate.
| Category | Seoul | Tokyo | Change |
|---|---|---|---|
| housing | ₩1,100,000 | ¥150,000 | +20% |
| food | ₩450,000 | ¥48,000 | -6% |
| transport | ₩65,000 | ¥11,000 | +49% |
| utilities | ₩140,000 | ¥14,000 | -12% |
| leisure | ₩250,000 | ¥30,000 | +6% |
| healthcare | ₩35,000 | ¥4,000 | +1% |
Each axis is a weighted aggregate of underlying indicators normalized to a 0–10 scale. Weights are explicit and disclosed per axis. The composite is the unweighted mean of the four axes — axes are not collapsed further because the underlying trade-offs (e.g. low cost vs poor air quality) are user-dependent.
Affordability
- Cost-of-living index (weight 60%)82
- Rent index (weight 40%)55
How this is calculated
Affordability = ((100 − costIndex)/100 × 0.6 + (100 − rentIndex)/100 × 0.4) × 10. For Tokyo: ((100 − 82)/100 × 0.6 + (100 − 55)/100 × 0.4) × 10 = 2.9.
Tokyo is among the more expensive cities tracked. Salary expectations should be calibrated to the high cost base before relocating.
Quality of life
- Safety index (weight 40%)85
- Healthcare index (weight 35%)80
- Air quality index (weight 25%)70
How this is calculated
QoL = (safety/100 × 0.4 + healthcare/100 × 0.35 + airQuality/100 × 0.25) × 10. For Tokyo: (85/100 × 0.4 + 80/100 × 0.35 + 70/100 × 0.25) × 10 = 8.
Tokyo scores excellent on safety, excellent on healthcare and good on air. The composite quality-of-life signal is strong.
Remote-work friendliness
- Internet (median Mbps) (weight 45%)280 Mbps
- Effective income tax (lower = better) (weight 30%)12.0%
- Cost-of-living (lower = better) (weight 25%)82
How this is calculated
RemoteWork = (min(Mbps/300, 1) × 0.45 + (1 − incomeTax) × 0.3 + (100 − costIndex)/100 × 0.25) × 10. For Tokyo: (min(280/300, 1) × 0.45 + (1 − 0.12) × 0.3 + (100 − 82)/100 × 0.25) × 10 = 7.3.
Tokyo combines fast internet (280 Mbps median), a 12% effective income tax and cost index 82 — a strong configuration for remote workers earning in a stronger currency.
Healthcare
- Healthcare quality index (weight 70%)80
- Healthcare out-of-pocket / month (lower = better) (weight 30%)4000
How this is calculated
Healthcare = (qualityIndex/100 × 0.7 + max(0, 1 − OOP/500) × 0.3) × 10. For Tokyo: (80/100 × 0.7 + max(0, 1 − 4000/500) × 0.3) × 10 = 5.6.
Tokyo has trade-offs in healthcare: quality is excellent, typical out-of-pocket cost is ~4000 JPY/month. Cross-border insurance closes the gap.
Salary required in Japan
Using Tokyo as the destination anchor and Japan's effective payroll deductions.
Tools you'll need to move to Japan
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How this page is calculated
Data sources
- Mundevo cost-of-living and rent indices. Anchor cities used for the corridor: Seoul for South Korea, Tokyo for Japan. These are population-weighted defaults that can be overridden by readers via a city-specific salary-needed page.
- FX rate. 1 JPY = 8.8095 KRW, sourced from Mundevo's exchange-rate provider on 2026-05-27.
- Japan payroll deductions. Effective income tax 12% and social security 15.0%.
- Mundevo quality indices. Safety, healthcare and air-quality composites on a 0–100 scale.
Update cadence
Data as of . Last reviewed .
Calculation
The corridor compares Seoul (anchor for South Korea) with Tokyo (anchor for Japan). Monthly basket costs are converted to KRW using the live FX rate, then differenced per category. Destination salary requirements use Japan's effective tax rate and the Mundevo lifestyle multipliers.
Limitations
- Corridor uses a single anchor city per country; if your origin or destination is a smaller city, run the dedicated salary-needed page to refine.
- FX is a snapshot. Rates move 1–3% per month — use the live rate on the day of any transfer.
- Tax model is the effective rate for a single salaried filer; visa-specific regimes (e.g. Portugal NHR) can shift the net by 5–10 percentage points but are not modeled here.
- Relocation costs (shipping, deposits, agency fees) are estimated separately by the partners surfaced below and are not included in the monthly cost delta.
Frequently asked questions
Is Japan cheaper than South Korea?
Moving from South Korea (anchored to Seoul) to Japan (anchored to Tokyo) is roughly 11% more expensive on the monthly basket. Tokyo has cost index 82 vs Seoul at 75.
What salary do you need in Tokyo after moving from South Korea?
At a balanced lifestyle, Tokyo requires ¥4,694,064 gross per year (¥285,556 take-home monthly). At the current FX rate (1 JPY = 8.8095 KRW), that's the equivalent of about ₩41,352,468 in KRW.
What about taxes in Japan?
Japan has an effective income tax rate of 12% for a single salaried filer, plus 15.0% employee-side social security and 10% VAT. Combined payroll deduction works out to ~27%. Country-specific regimes (e.g. NHR, Beckham law, expat tax holidays) are not modelled.
What's the best way to actually move from South Korea to Japan?
The corridor report on this page surfaces the tooling stack we recommend: an FX provider for the salary transfer, expat health insurance for the gap before local coverage kicks in, a multi-currency account, and an international shipping comparison for relocating belongings. See the affiliate-vetted shortlist below for current options.