Tax Planning
South Korea’s Reform of Real Estate Wealth Taxation: What HNWIs Need to Know
Recent changes to 종합부동산세 (Comprehensive Real Estate Tax) are reshaping the liability landscape for high-net-worth individuals. Here's how your portfolio might be affected—and how to plan accordingly.
By NomadicTax Research Team • 5-8 min read • August 21, 2026
## Understanding the Recent Changes to 종합부동산세 (Comprehensive Real Estate Tax)
In early August 2026, South Korea's National Tax Service published updated brackets and rates for the 종합부동산세, which took effect for the 2026 tax year.([j.nts.go.kr](https://j.nts.go.kr/nts/cm/cntnts/cntntsView.do?cntntsId=7739&mi=2357&utm_source=openai)) Here are key changes:
- **종합합산 land assets**: now taxed at 1% on 종합합산 property value up to KRW 15 billion, 2% for amounts between KRW 15–45 billion, and 3% above KRW 45 billion.([j.nts.go.kr](https://j.nts.go.kr/nts/cm/cntnts/cntntsView.do?cntntsId=7739&mi=2357&utm_source=openai))
- **별도합산 land assets**: lower brackets with rates of 0.5%, 0.6%, and 0.7% depending on taxable base.([j.nts.go.kr](https://j.nts.go.kr/nts/cm/cntnts/cntntsView.do?cntntsId=7739&mi=2357&utm_source=openai))
- **Standard tax reductions** if you are a single-household owner (1세대 1주택자): significant deductions tied to age and length of ownership, up to 80% off.([j.nts.go.kr](https://j.nts.go.kr/nts/cm/cntnts/cntntsView.do?cntntsId=7739&mi=2357&utm_source=openai))
## Impact for High-Net-Worth Individuals (HNWIs)
- Owning multiple properties or land in different regions could expose you to both 종합합산 and 별도합산 categories—combining higher effective rates.
- The new thresholds make real estate accumulation more expensive, especially above KRW 15 billion in assessed public announcement values.
- Those with a primary residence may see relief via deductions, but secondary properties will feel the burden more.
## Practical Tax Planning Strategies
**1. Prioritize consolidation and timing**
- **Sell** or transfer less efficient properties before the public values push you into higher brackets for next year.
- **Delay acquisitions** until depreciation or public announcement values may become more favorable.
**2. Maximize deductions as a 1세대 1주택자**
- If you qualify as a *single‐household one‐home owner*, ensure your property meets size, duration, and residency requirements. Age deductions stack with long ownership periods—so early planning helps.
**3. Review portfolio structure and ownership**
- Consider holding land under corporate entities vs individuals—different aggregation rules apply.
- Use gift transfers among family to spread taxable base, keeping within favorable thresholds.
**4. Stay updated on public value assessments**
- 종합합산 uses 공시가격 (the publicly announced real estate value) in its base. Local governments’ announcements may shift your liability sharply. Track changes in district‐level municipality valuation notices closely.
## Illustrative Examples
| Scenario | Details | Annual 종합부동산세 Before | Annual Tax Under New Rules* |
|---|---|---|---|
| HNWI owns two land properties in Seoul + one suburban home, total 공시가격 ~ KRW 30B, not 1세대 1주택 | No deductions apply in aggregate | ~ KRW 300 million | ~ KRW 600 million—due to 2% rate on middle bracket + separate sums under 별도합산 |
| Same individual qualifies as 1세대 1주택 and meets age 65+ | Age + tenure reduction | ~ KRW 300 million | ~ KRW 150 million or less—thanks to cumulative deductions of up to 80% |
> *Estimates approximate; actual liability depends on local 공정시장가액비율 and municipal adjustments.
## Key Takeaways
- Real estate valuations, both 公示價 and 공정시장가액비율, matter enormously. Even small increases in public announcement price can shift you into higher taxation brackets.
- Qualifying for the 1세대 1주택 deduction can dramatically reduce liability, especially for older homeowners.
- Ownership structure—how many homes are under your name, under trusts, under companies—can affect whether they’re counted together or separately.
**Actionable Next Steps:** Gather all property valuations, assess whether any properties push you into higher brackets, consider restructuring or selling certain assets, and consult a qualified Korean tax attorney or real estate tax advisor early.