What is Exit Tax (국외전출세)?
The exit tax is a rule in the Korean Income Tax Act (소득세법), under Article 118-9, that treats certain individuals as having disposed of domestic stock holding on the day they cease being residents, even if no sale occurred. This applies to “대주주” shareholders (large owners) under specific criteria. (taxlaw.nts.go.kr)
Who Triggers Exit Tax?
To trigger the exit tax, you must satisfy:
- Residency: You must be a resident who is moving abroad, and over the past 10 years, being in Korea (having residence or domicile) for at least 5 years. (taxlaw.nts.go.kr)
- Major shareholding: At the time of the move, you must be a “대주주” per valuation rules (based on kind of stock, whether listed or unlisted, and the ownership ratio or value). (taxlaw.nts.go.kr)
What Is Taxed, When & at What Rate?
- What: Domestic stock and similar securities (both listed and unlisted) are treated as if sold on the day you exit residency. Unrealized gains are taxed. (taxlaw.nts.go.kr)
- Crossing dates: If you satisfy the above residency and major share criteria as of your departure date, the exit tax applies. (taxlaw.nts.go.kr)
- Rates:
• If exit is before Dec 31, 2018, flat 20% on total gains.
• On or after Jan 1, 2019, gains up to ₩300 million taxed at 20%, amounts exceeding ₩300 million at 25%. (nts.go.kr)
Reporting & Administrative Duties
- Before exit: File domestic stock holding status (주식등 보유현황 신고) prior to leaving. Also, appoint a tax-agent (납세관리인) to handle ongoing compliance. (nts.go.kr)
- After exit: File the exit tax return within three months after the end of your departure month. (nts.go.kr)
- Late or deficient filings incur penalties (“가산세”)—including failure to appoint agent or submit required statements. (nts.go.kr)
Example
Imagine you’re a resident who owned listed stock worth ₩500 million as a major shareholder. The actual acquisition cost was ₩200 million. You decide to move abroad in 2026 and are subject to exit tax. Gains = ₩300 million. Since this is after 2019, the first ₩300 million falls at 20%, but since your gains equal exactly ₩300 million, all gains taxed at 20%. If your gains were ₩400 million, then first ₩300 million taxed at 20%, excess ₩100 million taxed at 25%.
Planning Strategies for HNWIs
- Time your exit: Exiting prior to ownership reaching thresholds may avoid having status of “대주주.” But artificially massaging ownership can carry risks of challenge.
- Sales before exit: Selling stock before moving may crystallize gains and let you perhaps take advantage of lower rates or deduct costs more easily.
- Appoint a reliable tax agent: Ensures reporting done timely and detail template filings (e.g. stock holdings, acquisition date, ownership ratios) are accurate.
- Assess partial exits or partial listing changes: For instance, reducing ownership below major thresholds or transferring holdings gradually could mitigate burden—but watch anti-avoidance rules.
Why It Matters
Even without a sale, the exit tax treats you as if you sold stock—so substantial “phantom gains” may become taxable. Combined with the new crypto regime starting 2027, HNWIs navigating cross-border moves must plan carefully. Because many rules depend on definitions set by presidential decree, advance counsel and accurate documentation are essential. Tools like residency history, stock ownership records, and registrations with foreign residency are part of your toolkit.