Compliance
Compliance Essentials for HNWIs: Exit Tax & Overseas Asset Reporting in Korea
For High Net Worth Individuals in Korea, exit tax and overseas asset rules have tightened. Missteps in reporting or timing can lead to hefty unexpected tax liabilities.—here’s what you need to know.
By NomadicTax Research Team • 5-8 min read • September 2, 2026
## What Is the Exit (국외전출) Tax & Overseas Asset Reporting?
South Korea imposes **exit tax** (국외전출자 주식등 양도소득세) on major shareholders (“대주주”) who **emigrate or change residence abroad**, treating their domestic stocks as if sold at the time of exit. ([nts.go.kr](https://www.nts.go.kr/nts/cm/cntnts/cntntsView.do?cntntsId=7821&mi=2515&utm_source=openai))
Additionally, residents and domestic corporations must report **overseas financial accounts** and **overseas trusts (“신탁”)** under recent reporting rules to prevent tax evasion. ([t.nts.go.kr](https://t.nts.go.kr/gumi/na/ntt/selectNttInfo.do?bbsId=1028&mi=5241&nttSn=1352026&utm_source=openai))
## Key Rules & Deadlines
| Rule | Who? | Key Dates & Thresholds |
|------|------|--------------------------|
| **Exit Tax** (Domestic stock gain on exit) | Major shareholders who move residence abroad, meeting both: ≥5 years in Korea over last 10 years, and shareholding or assets meeting thresholds making them “대주주.” ([nts.go.kr](https://www.nts.go.kr/nts/cm/cntnts/cntntsView.do?cntntsId=7821&mi=2515&utm_source=openai)) | Exit day is when you move address or residency. Must file within **three months** of month containing exit date. You can apply for **payment deferral** if you nominate a Korean tax agent and provide security. ([nts.go.kr](https://www.nts.go.kr/nts/cm/cntnts/cntntsView.do?cntntsId=7821&mi=2515&utm_source=openai)) |
| **Overseas Financial Account & Trust Reporting** | Korean residents or domestic legal entities (위탁자) holding or controlling overseas accounts or trusts. Includes foreign bank accounts, foreign brokers, foreign real estate, foreign cryptocurrencies under account or trust. ([t.nts.go.kr](https://t.nts.go.kr/gumi/na/ntt/selectNttInfo.do?bbsId=1028&mi=5241&nttSn=1352026&utm_source=openai)) | For overseas financial accounts and trusts held in 2025, reporting deadline is **June 30, 2026**. For corporate year-ends, trust entities must report six months after fiscal year end. Notifications via HomeTax or local tax office. ([t.nts.go.kr](https://t.nts.go.kr/gumi/na/ntt/selectNttInfo.do?bbsId=1028&mi=5241&nttSn=1352026&utm_source=openai)) |
| **Penalties & Rewards** | Non-reporting or late reporting is subject to **fines (과태료)**, potentially significant. Conversely, aiding discovery or filing accurate tips may earn rewards or whistleblower bonuses up to tens of millions of KRW. ([nts.go.kr](https://www.nts.go.kr/nts/na/ntt/selectNttInfo.do?nttSn=1352026&utm_source=openai)) |
## Recent Changes & Implications
- The overseas trust (“해외신탁”) reporting obligation started in **2025**, requiring year-end or project-end filings including all types of assets controlled via a trust. ([t.nts.go.kr](https://t.nts.go.kr/gumi/na/ntt/selectNttInfo.do?bbsId=1028&mi=5241&nttSn=1352026&utm_source=openai))
- The threshold for overseas financial account balances that trigger reporting is **KRW 500 million (~US$350-450K depending on FX)** in aggregate on any single day of month in the reporting year. Currencies/assets like stocks, crypto, insurance are included. ([in.nts.go.kr](https://in.nts.go.kr/sangju/na/ntt/selectNttInfo.do?mi=5178&nttSn=1352026&utm_source=openai))
## Actionable Compliance Steps for HNWIs
1. **Assess Exit Triggers**: If planning to emigrate, check whether you meet the “major shareholder” thresholds (shareholding value or % in listed/unlisted). Consult with NTS on valuation methods.
2. **Inventory Abroad**: Make complete list of overseas bank accounts, trusts, foreign real estate, crypto holdings. Include date, balances, controlling person. If controlled via trust, identify you or related party’s controlling role.
3. **Early Filings**: File overseas account/trust reports by deadlines. For 2025 holdings: by June 30, 2026 (residents year-end) or six months after fiscal year end (for entities). Apply for deferral if applicable. Medicinally collect documentation.
4. **Exit Tax Planning**: Consider selling before exit or change structure to reduce tax. Also examine payment deferral option; you may need to provide collateral/security. Explore whether staying under thresholds helps avoid obligation.
5. **Use Rewards & Voluntary Disclosure**: If any overseas assets or trusts were previously un-reported, consider voluntary disclosure before audits intensify. Also consider whistleblower pathways if you have info to help catch others.
## Real Example
*Ms. Kim* owns KRW 10 billion of listed company shares and has lived in Korea 8 out of the last 10 years. She plans to relocate abroad. Under exit tax rules, she needs to recognize gain on her domestic shares at the time of exit, file within three months, but can apply for deferred payment if she appoints a Korean tax representative.
*Mr. Lee* holds foreign bank accounts and set up a foreign trust in 2025. He controls the trust. He must report both the accounts and the trust by June 30, 2026. Failure can lead to 과태료 (fine) plus risk of audit.
## Risk & Best Practices
- **Valuations** for assets (stocks, real estate, crypto) must follow Korean law; unreasoned undervaluation can lead to fines.
- **Understand timing** well; exit date, fiscal year ends, reporting windows are rigid.
- **Coordinate with advisors** for multinational issues: tax treaties may affect residency and obligations.
Staying on top of these rules and planning proactively can save HNWIs from unexpected liabilities and safeguard international mobility.