Why an exit review is necessary
The National Tax Service describes an “overseas departure” regime for certain residents who leave Korea while holding qualifying domestic shares or similar securities. The rules can tax unrealized appreciation as capital-gain income at departure rather than waiting until the shares are actually sold.
This is particularly important for high-net-worth individuals, founders, executives, and family members holding concentrated positions. A move may have immigration or business purposes, but the tax analysis turns on statutory residence history, the type and value of securities held, and whether the individual satisfies the applicable major-shareholder requirements.
Core eligibility concepts
The NTS guidance identifies several conditions, including:
- The person must have maintained a Korean address or residence for at least five of the ten years before departure.
- The person must meet the relevant major-shareholder test at the end of the year immediately before departure.
- The departure must involve moving the person’s address or residence outside Korea.
The major-shareholder test is technical. It can depend on ownership percentage, market value, the issuer, and the specific statutory provisions in force. A portfolio that appears diversified may still require review if the taxpayer holds shares directly, through related parties, or across connected accounts.
Before-departure steps
1. Build a securities inventory
List each issuer, account, acquisition date, acquisition cost, number of shares, market value, and ownership relationship. Include employee shares, founder shares, private-company interests, and securities held through nominees or family arrangements.
2. Confirm the residence history
Prepare evidence for the preceding ten years, including registration records, leases, employment records, family-location evidence, and travel history. Residence analysis should be performed independently from immigration status.
3. Obtain the required tax certificate
The NTS explains that a tax-payment certificate is relevant when a Korean national files an overseas-migration report with the Ministry of Foreign Affairs. A certificate may not be issued where tax arrears exist, so unresolved liabilities should be identified early.
4. File the tax-manager report if required
The NTS departure workflow includes reporting a tax manager before departure in the relevant cases. This is not a formality to leave until the last week; the appointment and documentation should be coordinated with the departure schedule.
After departure
The NTS states that the departure-related return for shares and similar assets is due within three months from the end of the month in which departure occurs. For example, if departure occurs on April 12, the relevant month ends April 30, and the three-month period is measured from that month-end.
Planning options and risks
A taxpayer may need to compare selling before departure, selling after departure, restructuring ownership, or retaining the shares. Each option can create different Korean income-tax, gift-tax, securities-transfer, and foreign-country consequences. Do not transfer shares to family members merely to avoid the departure rules: related-party transactions can create separate reporting and valuation issues.
The safest approach is to begin the review several months before departure, obtain a written valuation, reconcile ownership data, and calendar every Korean filing and payment obligation.