Overview of Korea’s Exit Tax Regime
South Korea imposes an exit tax on residents with substantial shareholdings when they emigrate. The regime taxes unrealised gains on domestic shares at the time of departure. This is commonly called the “국외전출자 출국세.” (nts.go.kr)
Who Qualifies as a “국외전출자” (Exiting Resident)?
- A resident taxpayer who is moving address or domicile abroad.
- Must have lived in Korea for 5 out of the prior 10 years before the date of exit. (nts.go.kr)
- Must be a major shareholder, defined by thresholds depending on whether shares are listed, bi-listed (KOSDAQ, etc.), venture, or private companies. The criteria include minimum percentage ownership or minimum market value. (nts.go.kr)
What Happens at Exit?
- Shares held on the date of exit are treated as if sold—unrealised gains become subject to capital gains (양도소득세). (nts.go.kr)
- The tax rate: If exit occurs on or after 2019-01-01, gains up to KRW 300 million taxed at 20%; excess taxed at 25%. If before that, flat 20%. (nts.go.kr)
Declaration & Payment Obligations
- Exit resident must file a report of domestic shareholdings and appoint a tax representative (납세관리인) before departing. Report must be filed with the tax office covering their residence. (nts.go.kr)
- The deadline: within 3 months from end of the month containing exit date. (nts.go.kr)
- Payment deferral is possible if: tax representative is appointed and certain securities not disposed—deferral lasts for 5 years (or 10 years for overseas study). After that, deferred tax becomes payable. (nts.go.kr)
Comparison with Other Jurisdictions (Brief)
| Country | When Exit Tax Applies | Key Differences from Korea |
|---|---|---|
| UK | temporary non-residence rules; only unrealised gains above allowance taxed | Korea’s is broader in share type category |
| USA | expatriation tax applies to long-term residents with net worth over threshold | US imposes net worth/government tax at exit vs Korean share-based triggers |
Planning Tips for High Net Worth Individuals (HNWIs)
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Evaluate shareholdings now: Check if you meet major shareholder thresholds. Selling or restructuring before becoming “exit taxpayer” could reduce exposure.
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Consider timing of exit: If large gains expected, delaying exit until after major share disposals may save taxes.
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Use payment deferral wisely: If eligible, appoint tax representative and ensure you satisfy conditions to avoid forced sale or immediate tax payment.
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Trusts, joint ownership, holding companies: Ownership structure matters—minor adjustments may shift major shareholder status.
Example Scenario
- Ms. C has been living in Korea for 7 years and holds 3% of voting rights in a private (non-listed) company worth KRW 2 billion. She now moves to another country. She must report her shareholdings and gets exit taxed on fair market valuation gains. Suppose cost base was KRW 1 billion, so gain is KRW 1 billion, taxed at 25% (exceeds 300 million threshold). She could defer tax if appointing a representative and meeting conditions.
Action-Checklist Before Departure
- Get fair market valuation of all domestic shareholdings.
- Determine if your shareholding qualifies as “major shareholder.”
- File required reporting and appoint representative if needed.
- Consult tax advisor to consider sale before exit, or restructuring ownership.
For HNWIs or frequent expatriates, Korea’s exit tax is material and actionable: prepare early.