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2026-07-29

- Legal column by Kim Mi-a, foreign attorney (U.S.) of Daeryun LLC (Limited)
As the retirement of the baby boomer generation begins in earnest, return migration by overseas Koreans who have lived for decades in the United States and elsewhere continues. Some plan to settle in Korea after finishing their children's education, and some move their living base to Korea for their retirement life or to support elderly parents. If you are planning to settle in Korea, the first task to check is assets. Depending on when and how you organize the real estate, pensions, and financial assets left in the U.S., the future asset structure and the scale of the tax burden can differ. If you migrate without advance preparation, there is a possibility of bearing excessive tax penalties by missing the timing of asset disposal, or facing the risk of double taxation.
The first part to check is the legal holding structure of the assets. Depending on whether they are held individually, jointly, or within a trust system, the future management method and the plan for transferring them to Korea will differ. A trust is a system widely used in the U.S. to simplify inheritance procedures and plan asset succession by managing property under a trust name, and living trusts are often set up so that the inherited estate does not go through the court's probate procedure. However, in Korea, the legal interpretation and tax judgment of trust structures may differ from the U.S., so the relevant content should be checked before settling in Korea.
Many people are aware of the rough scale of their assets, but it is rare for them to have systematically organized even the title structure and holding form. U.S. real estate is counted as one of the assets with a large weight in the process of settling in Korea. For real estate, the timing of disposal is more crucial than whether to hold it. The tax issues to review and the scope of reporting may differ between selling before and after becoming a resident under Korean tax law.
After becoming a resident under Korean tax law, an obligation arises to report rental income and capital gains arising from U.S. real estate not only to the U.S. but also jointly to Korea's National Tax Service. Therefore, the timing of real estate disposal and the holding strategy must be established by comprehensively considering not only market conditions but also the change in tax-law status in both Korea and the U.S. depending on whether one maintains U.S. permanent residency or citizenship, as well as reporting obligations.
U.S. pensions, the foundation of retirement life, also require advance analysis of the withdrawal method and taxation system. U.S. Social Security, along with 401(k), IRA, and the like, remain important assets even after settling in Korea. However, depending on the timing of receipt and the method of withdrawal, differences arise in the actual amount received and the tax burden. In particular, pensions are an area where the taxation systems of both Korea and the U.S. may apply simultaneously. Depending on the type of pension, one must review together which country has the right to tax and whether the foreign tax credit can be applied, in order to reduce unexpected tax burdens.
Inheritance and gift planning is also advantageous to set a direction for before settling in Korea. Depending on whether the residence of the person passing on the property and the person receiving it is Korea or the U.S., the applicable legal system, tax-exemption limits, and administrative procedures differ entirely. The structure in which an heir residing in Korea succeeds to assets located in the U.S. frequently occurs in practice, but cross-border inheritance has complicated preparation procedures and many matters to review. If there is a will or trust agreement drawn up in the U.S., one must first check whether it will be recognized as-is in domestic inheritance procedures or whether a separate legal review is necessary. Only by designing inheritance and gifts as one integrated part of the overall asset transfer plan can one prevent unnecessary future legal disputes and reasonably lower the tax burden.
The timing of real estate disposal, the pension receipt plan, the inheritance and gift structure, and the point of transition to residency under Korean and U.S. tax law examined above are by no means individual matters. Since all elements are closely connected like gears, an approach that examines them comprehensively and organically within the overall asset structure is needed, rather than reviewing a single asset independently. If you want a stable settlement in Korea, it is advisable to organize your asset status and review a long-term asset transfer plan at least 6 months to 1 year in advance.
Reporter Lee Dong-oh (canon35@mt.co.kr)
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