Capital Gains Tax Guide: Tax-Saving Strategies When Selling Property

Selling property in Korea can trigger a significant capital gains tax (양도소득세) bill. Depending on your holding period, number of properties owned, and whether the property is your primary residence, your tax rate can range from 6% to over 70%. Understanding the calculation process and available deductions is essential for minimizing your tax liability and maximizing your profit from the sale.

What Is Capital Gains Tax (양도소득세)?

Capital gains tax is levied on the profit you make from selling real estate, stocks, or other assets. For Korean property, the taxable gain is calculated as: Sale Price - Acquisition Price - Necessary Expenses - Special Deductions. The resulting amount is then taxed at progressive rates ranging from 6% (for gains under 14 million won) to 45% (for gains over 1 billion won). Additional surcharges apply for multiple property owners and short-term holdings, pushing effective rates even higher.

Calculation Steps

• Step 1: Determine the transfer price (양도가액) - the actual sale price of the property.
• Step 2: Determine the acquisition price (취득가액) - original purchase price plus acquisition tax, broker fees, and other costs.
• Step 3: Calculate necessary expenses (필요경비) - capital improvements, renovation costs, legal fees incurred during ownership.
• Step 4: Calculate the gain: Transfer Price - Acquisition Price - Necessary Expenses = Capital Gain.
• Step 5: Apply long-term holding special deduction (장기보유특별공제) based on holding period.
• Step 6: Subtract the basic deduction (기본공제) of 2.5 million won per year.
• Step 7: Apply the progressive tax rate to the taxable amount.

Long-Term Holding Special Deduction (장기보유특별공제)

This is the most powerful tax-saving tool for property sellers. For properties held over 3 years, you receive deductions on the capital gain. The deduction rate increases with holding period: 3 years gives 6% (general property) to 12% (primary residence), scaling up to 30% for 15+ years (general) or 80% for 10+ years of primary residence. For 1세대1주택 (single-home households), the deduction is calculated on both holding period and residency period, with maximum combined deduction reaching 80%.

Single-Home Exemption (1세대1주택 비과세)

The most valuable tax benefit in Korean property taxation: if you own only one home, have held it for 2+ years, and have lived in it for 2+ years (in regulated areas), you are completely exempt from capital gains tax on gains up to 1.2 billion won. For gains exceeding 1.2 billion won, only the excess portion is taxed. To qualify, you must meet all conditions at the time of sale, including ownership and residency requirements, and not own any other residential property.

Multi-Property Owner Surcharges (다주택 중과세)

Owners of multiple properties in regulated areas face heavy surcharges. As of 2026, two-home owners face a 20 percentage point surcharge on top of the basic tax rate, and three-or-more-home owners face a 30 percentage point surcharge. A property with a basic rate of 40% would be taxed at 60% for a two-home owner or 70% for a three-home owner. These surcharges also eliminate eligibility for the long-term holding special deduction, making the effective tax burden even higher.

Tax-Saving Strategies

• Hold for 3+ years to qualify for long-term holding deductions. Each additional year increases the deduction rate.
• Maintain primary residence status by actually living in the property for 2+ years.
• Keep all receipts for capital improvements and renovations—these reduce your taxable gain.
• Consider timing: sell during years when your other income is lower to benefit from lower progressive rates.
• For multi-property owners: consider selling in sequence to reduce to single-property status before selling the most valuable property.
• Document all acquisition costs including broker fees, legal fees, and acquisition tax for maximum deductions.

Use QuickFigure's capital gains tax calculator to estimate your tax liability before selling. Input your acquisition and sale prices, holding period, and property status to get an instant breakdown of your expected tax obligation and applicable deductions.