Korean Capital Gains Tax for Foreign Property Owners 2026: What the Surcharge Reinstatement Means for You
May 2026: Korea’s Capital Gains Tax Surcharge Is Back — What Foreign Owners Must Know Now
If you own multiple Korean properties as a foreign national, permanent resident, or long-term expat, May 2026 is a date you should have circled on your calendar.
Korea’s temporary capital gains tax (CGT) surcharge exemption — which had protected multi-home owners from punishing additional rates since May 2022 — expired on May 9, 2026. The government extended the waiver four times over four years, citing a frozen transaction market, but chose not to renew again.
From May 10, 2026 onward, selling a property in a “regulated zone” (조정대상지역) as a 2-home owner triggers an additional +20 percentage points on top of the standard progressive rate. For 3-or-more home owners, the surcharge is +30 percentage points.
For a foreign national with significant Korean real estate holdings, this changes the math dramatically.
How Korean Capital Gains Tax Works for Foreign Property Owners
Residents vs. Non-Residents
The Income Tax Act Article 118-2 distinguishes between resident and non-resident taxpayers:
| Category | Tax Treatment | Withholding |
|---|---|---|
| Korean resident (including F-5, F-2 with 183+ days/year) | Same rates as Korean nationals; progressive 6–45% + surcharge | No automatic withholding |
| Non-resident | Korean-source income taxed; 10% of price or 20% of gain (lower) withheld by buyer | Buyer must withhold |
| Corporation (foreign) | Corporate income tax applies separately | — |
F-5 permanent residence holders are treated as full Korean residents for tax purposes — same progressive rates, same surcharges, same exemptions apply.
Standard Progressive Rate Schedule
| Taxable Gain | Rate | Cumulative Deduction |
|---|---|---|
| Up to KRW 14 million | 6% | — |
| KRW 14M – 50M | 15% | KRW 1.26M |
| KRW 50M – 88M | 24% | KRW 5.76M |
| KRW 88M – 150M | 35% | KRW 15.44M |
| KRW 150M – 300M | 38% | KRW 19.94M |
| KRW 300M – 500M | 40% | KRW 25.94M |
| KRW 500M – 1B | 42% | KRW 25.94M |
| Over KRW 1 billion | 45% | — |
Add 10% local income tax on top of the capital gains tax amount.
Surcharge Rates (Reinstated from May 10, 2026)
| Situation | Surcharge | Max Combined Rate (before local tax) |
|---|---|---|
| 2 homes in regulated zone | +20%p | 65% |
| 3+ homes (including regulated zone) | +30%p | 75% |
| Short-term (under 1 year) | 70% flat | — |
| Short-term (1–2 years) | 60% flat | — |
Critical note: When surcharge rates apply, the long-term holding deduction (최대 80%) is completely disallowed. The combination of high surcharges and no deduction is what makes the reinstated regime so punishing.
Strategy 1: Sell in the Right Order — Save the Single-Home Exemption for Last
The Core Principle
The single-household, single-home exemption under Income Tax Act Article 89 exempts gains on sales up to KRW 1.2 billion entirely, provided:
- 2+ years of ownership
- 2+ years of residence in regulated zone properties acquired after August 3, 2017
For foreign owners who are Korean residents (F-5 and similar), this exemption is fully accessible.
The strategy: sell lower-gain properties first (absorbing surcharges on smaller amounts), and keep the highest-gain, longest-held property as your final holding — selling it as a single home for the KRW 1.2 billion exemption.
Worked Example: F-5 Holder with 3 Seoul Properties
Scenario: An F-5 holder owns three Seoul apartments — Apartment A (gain KRW 100M, 3 years held), Apartment B (gain KRW 300M, 7 years held), Apartment C (gain KRW 900M, 12 years held, KRW 1.2B price).
| Step | Property | Gain | Estimated Tax | Rationale |
|---|---|---|---|---|
| Year 1 | Sell A | KRW 100M | ~KRW 15M | Smallest gain absorbs surcharge |
| Year 2 | Sell B | KRW 300M | ~KRW 54M (2-home +20%p) | Reduced to 2-home rate |
| Year 3 | Sell C | KRW 900M | KRW 0 (single-home exemption) | Under KRW 1.2B → full exemption |
Total tax: ~KRW 69M on KRW 1.3B in gains.
Contrast — sell all in same year: Combined gain KRW 1.3B taxed at 3-home rate (~72%) ≈ KRW 900M+ in tax.
Sequencing across years is worth hundreds of millions of won for large portfolios.
Strategy 2: The 3-Year Temporary Dual-Property Exemption
Who It Applies To
Under Enforcement Decree Article 155, you can qualify for the single-home exemption even while temporarily owning two homes, if:
- You held your original home for 1+ year
- You acquired the new home at least 1 year after the original acquisition
- You sell the original home within 3 years of acquiring the new one
The 2022 revision to the Enforcement Decree unified this 3-year period regardless of whether the properties are in regulated zones.
Foreign Owner Considerations
For F-5 residents moving within Korea — or repatriating foreigners who acquired a Korean home before leaving — this exemption can eliminate tax entirely on properties under KRW 1.2 billion.
Example: A returning Korean-American (F-4 → F-5 conversion) owns a Mapo apartment (purchased 2022, current value KRW 900M) and buys a Bundang apartment in March 2025. As long as the Mapo apartment is sold by March 2028, the sale qualifies for full single-home exemption — zero tax on the KRW 900M sale.
For broader financial planning considerations for expats in Korea, see also 4th-Generation Insurance Switching Guide 2026, which covers health insurance options for long-term foreign residents.
Strategy 3: Gift-with-Debt Transfer — Passing Property to Family at Lower Tax
How It Works in Korea
A 부담부증여 (gift with burden) is a transfer where the recipient assumes the donor’s liabilities — typically the lease deposit (전세보증금) or mortgage. Tax treatment:
- Debt portion → treated as a sale; capital gains tax on the gain attributable to the debt
- Equity portion → gift tax on the net asset value after debt
Why It’s Powerful for Foreign Owners
Foreign nationals with Korean family (children, spouse as Korean resident) can transfer property while splitting the tax burden between capital gains and gift taxes. With high lease deposits (전세), the gain attributable to the debt component is often small, while the gift tax base is also reduced.
Worked Example: High-Deposit Property Transfer
Scenario: Seoul apartment FMV KRW 1.0B, acquisition cost KRW 600M, attached lease deposit KRW 600M. Transfer to adult child (Korean citizen).
| Component | Amount | Tax |
|---|---|---|
| Gift tax base | KRW 1.0B – KRW 0.6B = KRW 400M | ~KRW 67.5M after KRW 50M child deduction |
| Capital gains (on debt portion) | Gain = KRW 600M × (400M/1B) = KRW 240M | ~KRW 30–40M at basic rate |
| Total estimated | — | ~KRW 100–108M |
| Straight sale with surcharge (3-home) | Gain KRW 400M × 72% | ~KRW 288M |
Saving: approximately KRW 180M vs. outright sale under surcharge regime.
Critical caveat: If the recipient sells within 5 years, the “stepped-up basis” advantage disappears — the capital gains is recalculated using the original donor’s acquisition cost (이월과세, Income Tax Act Article 97-2). Plan for a minimum 5-year hold.
Strategy 4: Joint Spousal Ownership — Splitting the Progressive Rate
The Tax Math
Korean capital gains tax is assessed per individual. If a KRW 900M gain is split 50/50 between spouses (each KRW 450M), the applicable marginal rate drops from 42% to 40%, and each spouse applies the KRW 2.5M basic deduction separately.
| Structure | Total Taxable Gain | Estimated Tax (incl. 10% local) |
|---|---|---|
| Single owner | KRW 900M | ~KRW 330M |
| 50/50 joint (each KRW 450M) | KRW 450M × 2 | ~KRW 260M |
| Saving | — | ~KRW 70M |
Converting to Joint Ownership
Transferring a partial interest to a spouse is a gift — subject to gift tax (spousal gift deduction: KRW 600M per 10 years under Inheritance and Gift Tax Act). For properties where the equity transferred is under the deduction limit, the conversion can be done at near-zero tax cost.
Watch for:
- Acquisition tax on the transferred interest (1–3%, or 8–12% in regulated zones for additional-home acquisition)
- Reset of holding period for the transferred portion in certain cases
Foreign Exchange Compliance: Don’t Overlook FETA Reporting
When a non-resident foreign national sells Korean property and remits proceeds overseas, Foreign Exchange Transactions Act (외국환거래법) reporting obligations apply:
- Notify a designated Korean foreign exchange bank of the transaction
- For remittances over USD 50,000 (or equivalent), formal reporting to the Bank of Korea may be required
- Tax clearance certificate (납세증명서) from the NTS typically required before large remittances
Penalties for non-reporting range from warnings to fines up to 2% of the transaction value. Always coordinate with a Korean tax accountant and your bank’s foreign exchange desk.
Strategy 5: Long-Term Rental Registration — Revived Benefits After 2025 Reform
What Changed in Early 2025
The housing rental business registration (주택임대사업자) system was significantly reformed effective February 28, 2025. For foreign residents in Korea who can sustain a long-term rental arrangement, registration now provides meaningful long-term holding deductions.
| Rental Type | Minimum Rental Period | Long-Term Holding Deduction |
|---|---|---|
| Long-term general private rental | 10+ years | 70% |
| Public-supported private rental | 8+ years | 50% |
| Private constructed rental | 6+ years | +2%p per year |
Conditions and Constraints
- Rent increase cap of 5% per rental cycle must be maintained throughout the registration period.
- Early sale or change of use during the registration period triggers retroactive penalty and recovery of deductions claimed.
- Minimum of one registered unit; floor area generally 85㎡ or below (in the Seoul metropolitan area) required.
- For foreign owners, coordination with immigration status is required — ensure rental registration does not conflict with visa conditions.
Whether rental registration actually produces a net tax benefit depends heavily on individual asset composition. Always obtain a written opinion from a licensed 세무사 before registering.
Common Mistakes Foreign Owners Make
Mistake 1: Selling Two Properties in the Same Tax Year
Korea’s capital gains tax is calculated on an annual cumulative basis. Selling two properties in the same calendar year merges their gains into one tax return, often pushing the combined amount into a higher marginal bracket. Spacing sales across tax years — even by just a few weeks straddling December 31 — can save tens of millions of won.
Mistake 2: Missing the Regulated Zone Status Before Sale
Whether a property is in a “regulated zone” (조정대상지역) determines whether the surcharge applies. The government designates and de-designates these zones based on market conditions. A property in a newly de-designated zone is no longer subject to the surcharge from the de-designation date. Foreign owners should verify zone status at molit.go.kr within one month of a planned sale.
Mistake 3: Overlooking the Preliminary Return Deadline
Both residents and non-residents must file a preliminary capital gains tax return (예정신고) within 2 months of the transfer date. Missing this deadline results in a 10–20% underpayment penalty. For non-residents, the buyer is also obligated to withhold and remit — but this does not eliminate the seller’s filing obligation.
Mistake 4: Assuming Gift Tax Saves Tax Without a 5-Year Plan
Gift-with-debt transfers (부담부증여) are powerful — but only if the recipient holds the property for at least 5 years. If the recipient sells within 5 years, the carried-over basis rule (이월과세, Income Tax Act Article 97-2) resets the gain calculation to the original donor’s acquisition cost. Without a 5-year commitment, the anticipated tax saving evaporates.
Mistake 5: Ignoring Foreign Exchange Transaction Reporting
Non-resident sellers who remit proceeds from Korean property sales abroad without proper FETA reporting can face fines of up to 2% of the transaction amount. For a KRW 1 billion sale (~USD 750,000), the fine could be KRW 20 million. This is entirely avoidable with proper advance coordination through a designated Korean foreign exchange bank.
How to Use Hometax for a Preliminary Tax Estimate
The NTS Hometax platform (hometax.go.kr) provides a free capital gains tax auto-calculation tool (양도소득세 자동계산) that foreign residents can use to estimate their liability before consulting a 세무사.
Navigation: Log in to Hometax → Tax Filing → Tax Simulation → Capital Gains Tax Auto-Calculation.
Input fields include:
- Acquisition price (취득가액)
- Necessary expenses (필요경비) — acquisition tax, brokerage fees, renovation costs
- Sale price (양도가액)
- Acquisition and sale dates (for holding period and deduction calculation)
- Number of homes owned at time of sale
- Whether the property is in a regulated zone
The tool outputs the estimated capital gains tax, applicable deduction rate, and preliminary filing amount. For complex cases (gift-with-debt, joint ownership, rental registration), always cross-check the Hometax estimate with a 세무사 simulation.
Regulated Zone Status: Where to Check
As of May 2026, regulated zone designations in Korea are subject to ongoing policy review. The government has both expanded and contracted the designated areas multiple times in recent years. Verify current status through:
- Ministry of Land, Infrastructure and Transport (molit.go.kr) — official policy announcements
- Korea Real Estate Board (r-one.co.kr) — searchable database by address
- National Tax Service (nts.go.kr) — capital gains tax FAQ section with zone guidance
Zone status as of any given date is the controlling factor for whether the +20%p or +30%p surcharge applies. Do not rely on information from real estate agents or online forums for tax purposes — verify directly with official sources.
Tax Treaty Considerations
Spain–Korea Double Tax Treaty (1994, updated)
Under Article 13 of the Spain-Korea tax treaty, capital gains from immovable property may be taxed in the country where the property is situated. Korean tax takes priority on Korean real estate gains. Spanish residents can claim a foreign tax credit in Spain for Korean CGT paid, preventing double taxation.
Mexico–Korea Double Tax Treaty
Similarly structured under Article 13. Mexican nationals with Korean real estate pay Korean CGT first; Mexican tax authority recognizes a credit. Consult a Mexican tax advisor familiar with foreign asset reporting (DIOT, SAT requirements for foreign income).
U.S. Citizens and Green Card Holders
The U.S.–Korea tax treaty has limited CGT provisions; U.S. persons must report Korean property income on U.S. returns (FATCA, FBAR if accounts involved). The Foreign Tax Credit (Form 1116) generally prevents double taxation but careful planning is required.
Practical Steps for Foreign Property Owners Right Now
Immediate Action List
-
Identify your regulated-zone properties — check the Ministry of Land, Infrastructure and Transport (molit.go.kr) or Korea Real Estate Board (r-one.co.kr) for current designation status. This changes with policy.
-
Calculate your exposure — use Hometax (hometax.go.kr) tax simulation for a preliminary estimate of tax under current rules.
-
Consult a bilingual Korean tax accountant (세무사) — surcharge rules, exemption eligibility, foreign exchange reporting, and treaty application all interact. A one-hour consultation with a Seoul-based 세무사 familiar with foreign owner cases is far cheaper than a surprise tax bill.
-
Call NTS Foreigners’ Helpline — The NTS operates a multilingual helpline at ☎ 1588-0560 (English, Chinese, Japanese support during business hours).
-
Do not transfer or sell without preliminary reporting — Non-resident sellers are subject to buyer withholding obligations. Buyers of properties from non-residents must withhold and remit tax within 2 months. Coordinate early.
Long-Term Holding Deduction: Your Best Friend if You Stay Single-Home
Once you are down to a single Korean home as a resident, the long-term holding deduction rates (소득세법 제95조) are generous:
| Holding Period | Holding Deduction | Residence Deduction (2yr+) | Total |
|---|---|---|---|
| 3 years | 12% | 12% | 24% |
| 5 years | 20% | 20% | 40% |
| 7 years | 28% | 28% | 56% |
| 10+ years | 40% | 40% | 80% |
A 10-year single-home owner with KRW 900M in gains pays effective CGT on only 20% of the gain — a powerful reason to consolidate holdings to one property and hold long.
Choosing the Right Strategy: A Decision Framework
No single strategy is universally optimal. The right approach depends on your specific combination of asset composition, family situation, visa status, and timeline. Here is a structured framework for narrowing down your options:
| Situation | Best Strategy | Priority |
|---|---|---|
| 3+ properties, one held 10+ years with large gain | Single-home exemption sequencing | Critical |
| Recently bought second home, within 3-year window | Temporary dual-property exemption | High |
| High lease deposit (전세보증금) attached to property | Gift-with-debt transfer to family | High |
| Spouse is Korean resident, significant gain expected | Joint spousal ownership conversion | High |
| Planning to hold a property for 10+ more years | Long-term rental registration (10yr, 70% deduction) | Medium |
| Must sell short-term, no exemptions available | Maximize necessary expense deductions; consider loss harvesting | Low |
How to Calculate Necessary Expenses
One often overlooked area is the deduction of necessary expenses (필요경비) from the capital gain. These reduce the taxable gain directly and include:
- Acquisition tax paid at purchase
- Real estate brokerage fees on both purchase and sale
- Renovation and improvement costs (documented, structural improvements — not routine maintenance)
- Legal and registration fees at acquisition
Foreign owners frequently underreport these expenses because receipts from years ago are hard to locate. Reconstruct records from banking history, tax filings, and registration documents. A 세무사 can often identify deductible expenses foreign owners miss, saving amounts that easily exceed the consultation fee.
Inheritance Planning: A Korean Property in Your Estate
For foreign nationals who hold Korean real estate but may not reside in Korea permanently, succession planning is increasingly important. Korean inheritance tax (상속세) applies to Korean-situated assets for all beneficiaries, regardless of nationality:
- Basic inheritance deduction: KRW 500M per heir (for Korean-resident heirs)
- Spouse deduction: Up to KRW 3 billion for surviving Korean-resident spouse
- Inheritance tax rate: 10–50% progressive on net taxable inheritance
Korean real estate in a foreign national’s estate is subject to the full Korean inheritance tax regime. Early estate planning — using gifting strategies, gradual transfer, or trust structures — can substantially reduce the eventual inheritance tax burden.
This is another area where the interaction of Korean tax law with your home country’s inheritance or estate tax rules requires coordinated advice from specialists in both jurisdictions.
Key Resources for Foreign Owners
- National Tax Service (nts.go.kr): Capital gains tax guides, filing deadlines
- Hometax (hometax.go.kr): Tax simulation, preliminary filing
- NTS Foreigners’ Helpline: ☎ 1588-0560
- NTS Call Center: ☎ 126 (Korean)
- Korea Real Estate Board (r-one.co.kr): Property price data, regulated zone status
- Ministry of Land (molit.go.kr): Policy announcements
Related guides: Actual Loss Insurance Claim Denial 2026 | After Quitting Job Checklist 2026 | 4th-Generation Insurance Switch 2026 | Tax-Efficient Dividend Investing 2026
This guide is based on the Income Tax Act, Enforcement Decree of the Income Tax Act, and National Tax Service official guidance current as of May 2026. Tax laws change frequently. Verify all figures with a licensed Korean tax accountant (세무사) and the NTS before any transaction.
Did Korea's capital gains tax surcharge exemption expire in 2026?
Yes. The temporary exclusion under Enforcement Decree of the Income Tax Act Article 167-3 ran from May 10, 2022 to May 9, 2026. As of May 10, 2026, the surcharge of +20%p (2-home owners) or +30%p (3+ homes) in regulated zones is reinstated.
Do foreign nationals pay Korean capital gains tax on property?
Yes. Under the Income Tax Act Article 118-2, non-residents are subject to Korean capital gains tax on Korean real estate. The tax is withheld at source (10% of transfer price or 20% of gain, whichever is lower) for non-residents, with final settlement possible via filing. F-5 permanent residents are treated as residents and subject to the same rates as Korean nationals.
What is the basic capital gains tax rate in Korea?
Basic rates follow the progressive schedule: 6% to 45% on taxable gains. Multi-home owners in regulated zones face surcharges of +20%p (2 homes) or +30%p (3+ homes), pushing effective rates up to 75% before the 10% local income tax surcharge.
What is the temporary dual-property exemption for foreigners?
Under Enforcement Decree Article 155, if you acquire a new Korean home and sell the previous one within 3 years of acquisition, the sale may qualify as a single-home exemption (non-taxable up to KRW 1.2 billion). This applies to F-5 holders who meet the 2-year ownership and, in regulated zones, 2-year residence requirements.
Is Korean real estate income taxable in my home country too?
It depends on your country's tax treaty with Korea. Korea has tax treaties with most OECD nations. Under the OECD Model Convention (Article 13), real property gains are typically taxable in the country where the property is located — meaning Korea has primary taxing rights. Your home country may provide a foreign tax credit.
What is the KRW 1.2 billion single-home exemption?
A single-household owning one home for 2+ years (and 2+ years' residence in regulated zones) pays zero capital gains tax if the sale price is KRW 1.2 billion or less. Gains on the portion above KRW 1.2 billion are taxed at basic rates with long-term holding deductions up to 80%.
How does the gift-with-debt (담부부증여) strategy work for foreign owners?
A gift-with-debt transfer (부담부증여) passes the property to a recipient who assumes the attached debt (lease deposit or mortgage). The debt portion is treated as a sale for capital gains purposes; the remaining equity is taxed as a gift. This can reduce total tax versus an outright sale, especially when the property carries a large lease deposit (전세보증금).
Can foreigners register as rental business operators in Korea?
Foreign nationals who are Korean residents (F-5, F-2, etc.) can register as housing rental business operators (주택임대사업자). Long-term general rental registrations of 10+ years can qualify for a 70% long-term holding deduction. Non-residents face additional compliance requirements.
What is the Korean Foreign Exchange Transactions Act reporting requirement for property gains?
When a non-resident sells Korean real estate and remits proceeds abroad, reporting to a Korean bank (designated foreign exchange bank) under the Foreign Exchange Transactions Act (외국환거래법) is required. Failure to report may result in penalties up to 2% of the transaction amount.
How do I report Korean capital gains tax as a non-resident?
Non-residents must file a preliminary return (예정신고) within 2 months of the transfer date. The acquiring party (buyer) is obligated to withhold tax if the seller is a non-resident (10% of purchase price or 20% of gain). Final settlement can be filed in May of the following year.
Does the Spain-Korea or Mexico-Korea tax treaty affect Korean capital gains?
Korea has tax treaties with both Spain and Mexico. Under both treaties, Article 13 (Capital Gains) generally grants primary taxing rights to the country of the property's location — Korea. Spanish and Mexican nationals can claim a foreign tax credit in their home country for Korean capital gains tax paid.
Where can I verify current Korean capital gains tax rates?
The National Tax Service website (nts.go.kr), the NTS call center (☎126, weekdays 9am–6pm KST), or Hometax (hometax.go.kr) tax simulation tools are authoritative sources. Always verify with a Korean licensed tax accountant (세무사) before any transaction.
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