Compliance
Planning Around South Korea’s New Overseas Assets Reporting Regime
With the 2026 overseas financial accounts and trusts disclosures now operational, residents and corporations must adapt to avoid heavy penalties and ensure full compliance.
By NomadicTax Research Team • 5-8 min read • September 14, 2026
## Overview of the New Overseas Assets Reporting Requirements
South Korea has strengthened its laws under the *International Tax Adjustment Act* (`국제조세조정에 관한 법률`) requiring **residents and domestic corporations** to report overseas financial accounts and trusts. If at any time during the 2025 calendar year, the total balance in overseas accounts (including crypto, securities, insurance, etc.) exceeded **5 billion KRW**, those must be reported by **June 30, 2026**. ([nts.go.kr](https://www.nts.go.kr/nts/na/ntt/selectNttInfo.do?bbsId=1028&mi=2201&nttSn=1354611&utm_source=openai))
Reportable assets now include:
- **All 해외금융계좌 (overseas financial accounts)**: deposits, savings, investment assets, crypto held in exchange accounts, etc. ([nts.go.kr](https://www.nts.go.kr/nts/na/ntt/selectNttInfo.do?bbsId=1028&mi=2201&nttSn=1354611&utm_source=openai))
- **해외신탁 (foreign trusts)**: if you set up or transferred assets into a trust outside Korea and maintain control or benefit from them—even if not resident full-time. ([nts.go.kr](https://www.nts.go.kr/nts/na/ntt/selectNttInfo.do?bbsId=1028&mi=2201&nttSn=1354611&utm_source=openai))
## Key Thresholds and Deadline
| Threshold | Detail |
|---|---|
| **5 billion KRW** | If total overseas financial assets on any month-end in 2025 exceeded this amount, you are subject. ([nts.go.kr](https://www.nts.go.kr/nts/na/ntt/selectNttInfo.do?bbsId=1028&mi=2201&nttSn=1354611&utm_source=openai)) |
| **June 30, 2026** | Deadline for reporting 2025 assets. ([nts.go.kr](https://www.nts.go.kr/nts/na/ntt/selectNttInfo.do?bbsId=1028&mi=2201&nttSn=1354611&utm_source=openai)) |
Exemptions apply for certain non-resident or short-term residence circumstances:
- **재외국민** (Korean citizens living abroad) who had less than 182 days of domestic residence in the one year prior to year-end. ([taxlaw.nts.go.kr](https://taxlaw.nts.go.kr/qt/USEQTA002P.do?ntstDcmId=200000000000021892&wnkey=2745ea56-b6e4-4541-8fe1-f3dab536ffa9&utm_source=openai))
- **외국인 거주자** (foreign residents) who during the past 10 years had domestic presence (address or residence) totaling 5 years or less. ([j.nts.go.kr](https://j.nts.go.kr/ulsan/na/ntt/selectNttInfo.do?bbsId=1028&mi=6165&nttSn=1352026&utm_source=openai))
## Penalties, Rewards, and Enforcement
- Non- or under-reporting overseas financial accounts or trusts can lead to substantial **fines** (10% of undeclared/under-declared amount) and, for balances over certain high thresholds (e.g. 50 billion KRW), possible **criminal penalties** and public disclosure. ([nts.go.kr](https://www.nts.go.kr/nts/na/ntt/selectNttInfo.do?bbsId=1028&mi=2201&nttSn=1354611&utm_source=openai))
- **Tip incentives**: Reporting violations through whistleblower channels can lead to reward payments up to **20 billion KRW** (for overseas accounts violations) or **40 billion KRW** (if significant overseas trust misuse) depending on the severity. ([nts.go.kr](https://www.nts.go.kr/nts/na/ntt/selectNttInfo.do?bbsId=1028&mi=2201&nttSn=1354611&utm_source=openai))
## Practical Tax Planning Strategies
1. **Aggregate your assets monthly**: Monitor overseas holdings and sum balances on month-ends; wrap crypto or securities via custodial or trust structures carefully as they may count.
2. **Document control and ownership**: Even if a trust is foreign, if you control or benefit, it is reportable. Ensure trust agreements and asset transfers are clearly documented.
3. **Consider structuring timing**: Assets acquired *after* January 1, 2027 may have different valuation methods (especially for crypto under the new tax law) and exemptions. ([nts.go.kr](https://nts.go.kr/nts/cm/cntnts/cntntsView.do?cntntsId=238935&mi=40370&utm_source=openai))
4. **Use exemptions wisely**: If you qualify as a 재외국민 or foreign resident under the definitions, ensure you can document your days of domestic residence rigorously.
5. **Voluntary disclosure**: If you missed reporting, file a **modified or late report** before enforcement actions—this could reduce penalties significantly. ([nts.go.kr](https://www.nts.go.kr/nts/na/ntt/selectNttInfo.do?bbsId=1028&mi=2201&nttSn=1354611&utm_source=openai))
## Example Scenario
> **Person A** is a Korean resident who owns crypto on foreign exchanges worth 6 billion KRW, some U.S. brokerage account stocks, and a trust in Singapore. Even though they are abroad half the year, their total overseas assets exceeded 5 billion KRW in month-end snapshots. They must report all accounts and the trust by June 30, 2026. If they fail to report and these assets are discovered, they'd face a 10% penalty, possibly criminal charges depending on the amount, and risk public disclosure.
Smart planning, documentation, and taking advantage of exemptions or voluntary disclosure windows are key.
## Action Steps Checklist
- Collect statements for all overseas financial accounts including crypto as of **each month-end** in 2025.
- Identify any trusts established or asset transfers made abroad in 2025.
- Determine whether you meet any exemption criteria.
- Prepare reports via HomeTax or with your tax advisor before the deadline.
- Consult a qualified international tax lawyer if multiple jurisdictions or complex trust instruments are involved.
By staying ahead of these reporting mandates, you can avoid severe penalties and ensure compliance under South Korea’s expanding global taxation efforts.