What Is Korea’s Exit Tax (국외전출세)?
- Established by law in December 2024 (법률 제21221호), effective January 1, 2025, for certain major shareholders (대주주) who depart Korea with domestic shares. Unrealized gains are “deemed” sold on the departure date, triggering capital gains inclusion. (law.go.kr)
- Conditions for triggering include having lived in Korea for at least 5 out of the 10 years before departure and owning shares meeting major shareholder tests as of the year prior to exit. (nts.go.kr)
2027 Expansion to Overseas Shares
- As of January 1, 2027, overseas-issued or overseas listed shares will also be subject to exit tax. For these stocks, major shareholder status is not required. (assets.kpmg.com)
- Some key exemptions:
- Total overseas stock value ≤ KRW 500 million,
- Foreign workers who have worked ≥ 80% of the last 10 years in Korea,
- Foreign worker’s spouse/minor children, if overseas stocks were acquired before the worker began employment in Korea, provided the worker departs within 6 months after end of service. (assets.kpmg.com)
Increased Duties for Reporting Foreign Assets & Trusts
- Overseas Financial Account Reporting and overseas trusts (해외신탁 신고제도) have been mandated with specific deadlines and penalties. For example, accounts with a year-end balance > KRW 500 million must be reported. (nts.go.kr)
- Whistle-blower incentives (포상금) have increased for tips about non-compliance. ⚠️ Penalties for misreporting or failing to report can be steep. (nts.go.kr)
Issues & Practical Advice for Expats
- Determine first if you are a resident (주소 또는 거소) under Korean tax law; only residents are subject to exit tax. Prove periods of stay over past 10 years.
- Catalogue overseas shares and financial accounts; value them as of departure date. Watch for exemption thresholds.
- Consult whether major shareholder thresholds apply in your situation. Global mobility assignments need careful planning — exit timing, assignment length, shareholding structure all matter.
- For overseas trusts, determine if you have “substantial control”: rights to appoint beneficiaries, terminate trust, etc., may trigger full reporting obligations.
Scenario
Kim, a US citizen working in Seoul since 2019, owns $400,000 (≈ KRW 600 million) in US-market equities and $50,000 in foreign crypto. She plans to return to the US on March 31, 2027.
- Under the new rule from Jan 1, 2027, her overseas shares may be subject to exit tax because they exceed KRW 500 million.
- Because she has been in Korea 8 of the past 10 years (≥ 5), and exit occurs after Jan 1, 2027, she may owe exit tax even though she isn’t a major shareholder domestically.
- Planning options: dispose of or gift some foreign shares before Jan 1, 2027; ensure trusts are correctly structured; possibly exit within certain deployment windows.
Compliance Checklist
- Declare exit tax obligation with local tax office within three months after departure month. Include full inventory of domestic and overseas shares when applicable. (nts.go.kr)
- File overseas financial account and overseas trust reports by their respective deadlines (typically June 30 of the following year). But for overseas trusts, domestic rules state if financial accounts are disclosed, trust report may take priority. (nts.go.kr)
- Keep detailed valuation documentation especially for overseas securities. Currency conversions, date stamps matter.
- Be mindful of whistle-blower programs; accurate reporting can reduce exposure to penalties.
Final Thoughts
Korea’s tightening of exit tax and asset reporting regimes reflect regional trends emphasizing global mobility, anti-avoidance, and transparency. For expats, dual nationals, or HNWI considering departure, proactive structuring and early action before January 1, 2027 could offer meaningful mitigation. Always consult a cross-border tax professional to tailor planning to your residency status and investment mix.