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When inheriting a Korean apartment to a child settled overseas, the tax “disaster” typically begins not from the child’s overseas residency itself, but from the moment the parent (decedent) is classified under tax law as a ‘non-resident (no domicile)’ (Resident: a domicile in Korea or a place of residence for 183 days or more; Non-resident: otherwise).

If the decedent is deemed a non-resident, taxable assets are limited to domestic property, but in the inheritance deduction system, the lump-sum deduction (KRW 500 million), the financial-asset inheritance deduction, and the funeral-expense deduction are excluded, leaving only the KRW 200 million basic deduction—a structure repeatedly observed in disputes.

Additionally, reporting and taxation in the country of residence (e.g., the U.S. or Canada) can be a separate issue. Korea’s foreign tax credit is, in principle, limited to foreign inheritance tax imposed on ‘inheritance property located abroad,’ so when a foreign country taxes a Korean apartment, credit application may not be clean—requiring an international plan.

1. Why “Inheritance to a U.S.-Settled Child” Becomes Risky

When a child resides overseas, a parent’s residency status may shift due to extended overseas stays, medical treatment, family cohabitation, or asset transfers, causing a change in the center of life and shaking the parent’s residency. Resident vs. non-resident status is determined not by mere days of entry/exit, but by the objective facts of life relations—such as family members sharing livelihood in Korea and the existence of domestic assets (Article 2 of the Enforcement Decree of the Income Tax Act).

In particular, if a person who has acquired permanent residency abroad has no family sharing a livelihood in Korea and, in light of occupation and asset status, is not deemed likely to re-enter and reside primarily in Korea, that person is considered to have no domicile in Korea (i.e., non-resident classification risk). One can be deemed a non-resident even though “my home is still in Korea.”

2. The Non-Resident Trap: The Typical Structure of “KRW 500M Lump-Sum Deduction Vanishing”

Inheritance tax deductions diverge dramatically depending on whether the decedent is a resident.

• The basic deduction (KRW 200 million) applies to both residents and non-residents (Article 18 of the Inheritance and Gift Tax Act).

• By contrast, the lump-sum deduction (KRW 500 million) is provided only “where inheritance commences upon the death of a resident” (Article 21 of the Inheritance and Gift Tax Act).

• Spousal and personal deductions are also premised on “the death of a resident,” so if the decedent is classified as a non-resident, the practical benefit of deductions can sharply decline (Articles 19 and 20 of the Inheritance and Gift Tax Act).

In fact, the Tax Tribunal has upheld a disposition that excluded the lump-sum deduction, the financial-asset inheritance deduction, and the funeral-expense deduction—applied at the time of inheritance tax filing—and applied only the basic deduction, by treating the decedent as a non-resident (Tax Tribunal Decision 2016-Seo-3669).

3. Residency Criteria: “Domicile in Korea” Is Key

The primary criteria for resident/non-resident status are “domicile in Korea” or “a place of residence for 183 days or more” (Article 1-2 of the Income Tax Act).

Here, domicile is determined by objective facts of life relations such as family members sharing livelihood in Korea and the existence of domestic assets (Article 2 of the Enforcement Decree of the Income Tax Act).

In practice, the following issues arise:

• The parent’s domestic life base (family, residence, medical care, income, assets)

• The nature of the overseas stay (temporary stay or de facto relocation)

• Acquisition of foreign permanent residency/nationality and likelihood of returning to Korea (statutory grounds for denying domicile)

Additionally, the “timing” of the change from non-resident to resident or vice versa is separately regulated, so organizing the facts before and after the commencement of inheritance is critical (Article 2-2 of the Enforcement Decree of the Income Tax Act).

4. Cross-Border Tax Risks and the Limits of Korea’s Adjustment Mechanisms

Depending on the tax law of the country of residence, reporting or taxation on inheritance/gifts may arise. Even if Korean inheritance tax has been paid, that may not be the “end” (specific reporting/taxation issues require review of the relevant country’s law).

Under Korean law, as a double-taxation relief mechanism, where inheritance tax is imposed upon the death of a resident and a foreign inheritance tax is imposed on ‘inheritance property located abroad,’ an equivalent amount is credited against the calculated inheritance tax (Article 29 of the Inheritance and Gift Tax Act).

However, the textual premise for the credit is inheritance property located abroad, and the credit calculation/application follows the manner and reporting procedures prescribed by the Enforcement Decree (Article 21 of the Inheritance and Gift Tax Act).

5. Countermeasures: “Managing Residency + Timing Design” Is Key

1. Reviewing the Parent’s Residency

Since the starting point of a shaken inheritance deduction system is often the decedent’s non-resident classification, it is necessary to review and organize materials regarding the parent’s domicile (center of life relations) before inheritance (or before health deteriorates) (Article 2 of the Enforcement Decree of the Income Tax Act).

2. Pre-emptively Addressing the ‘Post-Event Procedure Risk’ of Overseas-Resident Children

Even if the heir is overseas, inheritance tax filing/payment must still be carried out (including issues of joint and several taxation and the filing/payment subject), so it is safer to prepare the domestic representative system and documents (family relations, asset listings, valuation materials) in advance (NTS Written Internet Visit Counseling Team 4-2255).

3. Coordinating the Timing of Pre-Inheritance Gifts

Because the inheritance tax base includes pre-inheritance gifts made within a certain period, “when to gift” can affect the inheritance tax burden and the application of deductions (Article 13 of the Inheritance and Gift Tax Act).

Cross-border asset transfers cannot be handled by understanding only one country’s tax law. Because the determination of residency (domicile), the Korean inheritance deduction system, and the reporting/taxation of the country of residence overseas are all interlinked, a flawless global inheritance plan is essential.