Transferred to Asia by Your Company? What Korea, Japan and Singapore Actually Do to Your Family and Your Tax Bill

If your company is moving you to Asia, the detail that will matter most in three years is probably not on your own visa. Singapore no longer grants dependant's passes to the families of intra-corporate transferees unless a free trade agreement specifically covers them. Japan allows a dependent spouse to work 28 hours a week, and only after separate permission. Korea allows a dependent spouse to work in professional occupations outright, with the process simplified from April 2026. Meanwhile Singapore's 24% top tax rate beats Korea's 49.5% and Japan's roughly 55% without contest. The family answer and the money answer point in opposite directions.

Where we're coming from: SharedHomies runs share houses in Seoul. We make money when people choose Korea. So every number below is cited, and where Korea loses — which on tax is badly — we have said so.

What visa does a transfer actually use in each country?

Korea's D-7 is straightforward: a year at headquarters first, and a role in Korea connected to the parent company. Japan's is similar but narrower in one respect — the status restricts you to work at the destination entity, and part-time work at other companies is not permitted.

Singapore is where the structure changes rather than the paperwork.

Why does the Singapore ICT distinction matter so much?

Because it decides whether your family can legally live with you.

The Ministry of Manpower distinguishes intra-corporate transferees from other Employment Pass holders. Family members of ICTs are no longer eligible for Dependant's Passes or Long-Term Visit Passes unless specifically covered by an applicable free trade agreement meeting the prevailing criteria — and many FTAs contain no such provision. Singapore's agreement with Japan, for example, includes nothing permitting the spouse or dependants of a Japanese intra-corporate transferee to work or apply for a dependant's pass.

Families of regular Employment Pass holders remain eligible. So the same person, moving to the same Singapore office, has a completely different family outcome depending on whether the company structures the move as an internal transfer or a local hire.

If you take one thing from this article: ask your employer, in writing, whether you are being moved as an ICT or hired onto a standard Employment Pass. It is a paperwork distinction with a life-sized consequence, and HR will not necessarily volunteer it.

Can your spouse work?

Korea's position here is the strongest and it is barely mentioned in relocation content. An F-3 holder who obtains permission for activities outside their status can take professional work — not a 28-hour part-time cap, but actual professional employment. From 22 April 2026 this gets easier still, with comprehensive permission and online applications replacing the current process.

For a dual-career couple, that difference compounds over a three-year posting into something much larger than the tax gap that usually dominates these conversations.

What will you actually pay in tax?

Here Korea loses, and not narrowly.

Singapore's 24% on a territorial system is simply a better deal than anything Korea or Japan offers, and no amount of framing changes that.

Korea's mitigation is real but conditional. You may elect a flat rate on employment income under 조세특례제한법 제18조의2 rather than running through the progressive scale, and since the 2023 reform the election lasts 20 years from your first day of work in Korea. The 2026 tax revision bill raises that rate from 19% to 21% and extends availability to 31 December 2029 — announced 3 August 2026, submitted to the National Assembly in early September, not yet passed. Electing it forfeits every other deduction, exemption and credit, so it suits a high earner with few Korean deductions and suits a lower earner with dependants much less.

The second piece of Korean relief is the one most transferees never learn about. Under 소득세법 제3조, a foreign resident with five years or less of domicile in Korea within the previous ten is taxed on foreign-source income only to the extent it is paid within Korea or remitted to Korea. For a standard three-year posting, your home-country portfolio generally stays outside the Korean charge entirely. The catch is the word "remitted" — money you send to your Korean account to cover living costs is in scope from year one. We cover this and the separate ₩500 million overseas-account reporting rule in Korea's tax rules for long-term foreign residents.

On double social security, a totalization agreement solves it where one exists. The U.S.–Korea agreement covers old-age, survivors and disability insurance for workers aged 18 to 59 under the National Pension Act plus industrial accident contributions, excluding civil servants, military personnel and private school teachers. Your employer requests a Certificate of Coverage. Japan has an equivalent arrangement.

What does schooling cost?

Singapore has both the cheapest accessible options and by far the most expensive premium ones — the span is wider than the other two cities combined. Tokyo is generally the most moderate at mid-tier. Seoul sits between them.

The decisive question is not the sticker price but whether your package covers it. A transfer to Singapore with school fees paid and a transfer to Seoul without them are not comparable offers, and the difference can exceed the entire tax gap between the two countries.

So what should you actually negotiate?

If your family is moving with you, the family provisions matter more than the salary. Confirm the visa category in writing before anything else — particularly for Singapore, where ICT status may leave your family without residence rights at all. Then confirm whether your spouse intends to work, and check that the destination permits it in a form they would accept.

If you are moving alone and optimising take-home, Singapore, decisively. A 24% top rate on a territorial system against Korea's 49.5% is not a margin you close through allowances.

If you might stay longer than the posting, Korea's five-year window before worldwide income becomes taxable is genuinely generous, and F-5 permanent residency at five years compares well to Japan's general ten — though Japan's highly skilled professional points system can beat both, reaching permanent residency in three years at 70 points or one year at 80. For a senior transferee, that is worth checking before assuming Korea is the faster route.

Whatever the destination, get the housing arrangement specified. Whether the company provides accommodation, pays an allowance, or expects you to fund a Korean lease deposit out of pocket is a five-figure question, and Korean leases in particular demand a lump sum most transferees do not expect.

None of this is legal or tax advice, and immigration rules in all three countries have moved recently. Confirm anything consequential with your company's mobility team and a licensed adviser in the destination country.

Where do transferring families actually land in Seoul?

Corporate packages usually cover a serviced apartment or a company lease, but the gaps catch people: the weeks before the lease starts, a spouse arriving ahead of the family, or a single transferee whose package does not stretch to a full apartment. Our guide to monthly rentals in Seoul covers what those months cost, what fully furnished actually means in Korea is worth reading before you accept a company flat sight unseen, and you will need an ARC before opening a bank account or signing most contracts.

We run furnished share houses across Seoul on 30-day minimum stays with a deposit of one month's rent and no key money — which suits the bridge periods a relocation package tends not to cover. Tell us what you need.

Sources

Checked 10 September 2026. Immigration and tax rules in all three countries changed during 2026 — verify before acting.

• Lexology, changes to work pass restrictions for intra-corporate transferees — the Singapore dependant's pass exclusion
• Jobploy, can F-3 dependent visa holders work in Korea — spouse work permissions and the April 2026 simplification
• 소득세법 제3조 — the five-of-ten-years rule and remittance basis
• 법률신문 / 법무법인 태평양, 2026 국제조세 개정사항 — the 19% to 21% flat-rate change and 2029 extension
• U.S. Social Security Administration, U.S.–Korean Social Security Agreement — coverage, exclusions, Certificate of Coverage
• PwC Worldwide Tax Summaries, personal income tax rates
• iSchoolAdvisor, international school fees in Singapore 2026 and the equivalent Seoul and Tokyo guides