as of 2025, South Korea maintains the world's second highest inheritance tax rate (up to 50%) among OECD countries, after Japan (55%). in December 2024, the National Assembly rejected the government's tax reform plan, so the current rate will remain in effect in 2025. however, it is worth noting that a major overhaul of the inheritance tax system is expected in 2028.
key differences between estate and gift taxes
estate taxes are paid after death, while gift taxes are paid during life
inheritancetax is the tax you pay when you inherit property after someone dies. it's filed within six months (nine months for non-residents) of the date of inheritance, and is taxed on the entire estate minus any deductions. gift tax, on the other hand, is a tax that occurs when a living person gives property to another person for free, and it must be reported and paid by the recipient within three months.
the most important difference is the 10-year cumulative calculation. the gift tax is calculated by adding up all gifts received from the same person over a 10-year period, but after 10 years, it resets and you can take the deduction again. this makes tax planning strategies to take advantage of this very important.
tax rates and deduction limits in effect in 2025
progressive tax rate structure (estate and gift taxes are the same)
both taxes are subject to the same five-bracket progressive tax rate structure
- up to 100 million won: 10%
- over 100 million won to 500 million won: 20% (progressive deduction of 10 million won)
- over 500 million won to 1 billion won: 30% (progressive deduction of 60 million won)
- over KRW 10 billion to KRW 30 billion: 40% (progressive deduction of KRW 1.6 billion)
- over 3 billion won: 50% (progressive deduction 4.6 million won)
if the majority shareholder inherits, a 20% surcharge is added, bringing the effective tax rate up to 60%.
inheritance tax deduction limits and calculation method
alump sum deductionofKRW 500 million ismost commonly applied. this is compared to the basic deduction of 200 million won and various personal exemptions combined, and in most cases, the lump sum deduction is advantageous.
the spousal inheritance deductioncan be as little as 500 million won and as much as 3 billion won. the smaller of the actual inheritance and the statutory inheritance is applied, and the limit is KRW 3 billion. for example, if your spouse receives 1 billion won from a 2 billion won inheritance, the entire 1 billion won is deductible.
in addition, there is a child deduction (50 million won per child), minor deduction (10 million won × (18-current age)), elderly deduction (50 million won over 65), and disabled deduction (10 million won × (75-current age)).
gift Tax Exemption Limit (10-year cumulative)
gift tax is subject to different exemptions depending on the relationship between the donor and the recipient:
- spouse: 600 million won
- adult children (age 19 or older): 50 million won
- minor children (under age 19): 20 million won
- immediate dependents: 50 million won
- other relatives: 10 million won
introduced in 2024, the marriage gift property deductionallows an additional 100 million won to be deducted within two years before and after marriage. for adult children, the basic gift amount of 50 million won plus the marriage deduction of 100 million won can be transferred tax-free up to a total of 150 million won.
inheritance Process and Required Documents
6-step process for filing inheritance tax
when an inheritance occurs, it must be reported within six months from the end of the month in which the date of death falls. The first 1-2 months are focused on identifying the property. inventory the decedent's entire estate, and value real estate and financial assets. in months 3-5, calculate the tax amount and prepare the return. in the final month, we do a final review and file the return.
required documents include death certificates, family relationship certificates, basic certificates, property valuation data, financial transactions, and debt documents. for foreign heirs, all documents must be translated into Korean and notarized, which can be done remotely by a lawyer.
real estate registration transfers must be completed within 60 days, separate from the inheritance tax filing, and bank account and securities name changes must be coordinated with each financial institution.
gifting methods and tax-saving strategies
utilizing the 10-year window is key
the key to saving on gift taxes is to take full advantage of the 10-year reset rule. For example, if a parent gives their children 50 million won every 10 years, they can transfer property multiple times during their lifetime without paying taxes. a lump sum gift of 3 billion won would trigger a tax of about 4.2 billion won, but a gift of 50 million won every 10 years would be tax-free.
a family coordination strategy is alsoeffective. fathers and mothers can give separately, grandparents can give directly to grandchildren, and the entire family can work together to transfer more than KRW 700 million tax-free over 10 years.
when gifting real estate, it's important to consider future appreciation- it's beneficial to give away assets that are expected to increase in value significantly in the future. if an apartment worth 500 million won today is expected to be worth 1.2 million won in 10 years, it may be better to give it away now and pay 75 million won in taxes than to pay more in estate taxes later.
benefit from the spousal inheritance deduction
under current law, your spouse can receive an inheritance deduction of at least 500 million won and up to 3 billion won. this is a very favorable deal compared to other heirs. in March 2025, the ruling party has proposed the complete abolition of the spousal inheritance tax, and the opposition party is considering it positively, so even greater benefits are expected in the future.
a two-step strategyof inheriting from your spouse and then gifting back to your children is alsoworth considering. by inheriting the maximum amount from your spouse first, and then transferring property to your children using the separate gift tax exemption, you can significantly reduce your overall tax burden.
cautions for parent-child gifting
beware of the deemed gift rules
a sale that is significantly below market value may be taxed as a deemed gift. if a parent sells a 1 billion won apartment to their child for 500 million won, the difference of 500 million won will be subject to gift tax. from 2025, bypassed gifts through foreign corporations will also be taxed, so you need to be extra careful.
if you fail to report within three monthsof the gift, you will be charged a 20% surcharge. there is a 3% tax credit for self-reporting, so be sure to file on time. Also, make sure to keep accurate records of previous gifts, as all gifts within a 10-year period will be added together.
inheritance tax vs. gift tax: When is it advantageous?
when inheritance is advantageous
inheritance is advantageous if the value of your estate is stable or expected to decline. for example, if you expect a property worth 800 million won to be worth a similar amount in five years, it's better to pay 90 million won to 120 million won in inheritance tax later by utilizing the inheritance deduction than to pay 1.65 million won in gift tax now.
if your inheritance is 500 million won or less, the lump sum deduction will cover most of it and you will pay almost no inheritance tax. In this case, there is no need to make a gift in advance.
when gifting is advantageous
if you havean asset that is expected to increase in value,it is absolutely advantageous to give it away early. if you have a Gangnam apartment that's worth 500 million won today and expect it to be worth 1.5 billion won in 10 years, it's much more beneficial to transfer it now and pay the gift tax.
early preparation is also essential forbusiness succession. there are strict requirements to qualify for the family business inheritance deduction (10 years of operation, maintaining ownership, maintaining employment, etc.), so it's important to plan ahead and transfer shares.
real-world calculation example
2 billion inheritance scenario
family composition: Spouse, 2 adult children
property division:
- spouse: 1 billion won (50%)
- children: 500 million won each (25%)
tax calculation:
- total inheritance: 2 billion won
- spousal deduction: 1 billion won
- lump-sum exemption: 500 million won
- tax basis: 2 billion - 1.5 billion = 500 million
- tax rate: 20% (between 100 million and 500 million)
- tax payable: 90 million won (500 million × 20% - 10 million won)
apartment gift scenario
a gift of an apartment worth 800 million won to an adult child:
- gifted property: 800 million won
- gift deduction: 50 million won
- tax base: 7.5 billion won
- tax rate: 30% (between 500 million and 1 billion)
- tax payable: KRW 165 million (KRW 7.5 billion × 30% - KRW 60 million)
2024-2025 Tax Law Amendments
2024 Government Proposal Rejected: Status Quo
in December 2024, the National Assembly rejectedthe government's massive tax reform proposal. proposals to cut the top tax rate from 50% to 40% and increase the child tax credit from 50 million won to 500 million won were both defeated, leaving the current law in place for 2025.
the main reforms that were rejected include lowering the top tax rate (from 50% to 40%), increasing the deduction per child (from 50 million won to 500 million won), simplifying tax brackets (from five to four), and abolishing the large shareholder surcharge.
2028 Major Overhaul Notice
the government is undertaking fundamental reforms to convertthe estate tax system to a gift tax starting in 2028, a 75-year shift from the current system of taxing entire estates to taxing individual heirs.
the expected changes include increasing the spousal exemption to KRW 1 billion, increasing the exemption per child to KRW 500 million, ensuring a minimum exemption of KRW 1 billion, reducing tax revenue by about KRW 2 trillion (25% of the current KRW 8.5 trillion), and reducing the taxable household from 6.8% to 3.5%.
tighter valuation standards
from January 1, 2025, the National Tax Service may conduct its own assessment if the declared property value is more than KRW 500 million lowerthan the estimated market value or differs by more than 10%, making accurate property valuation even more important.
closing thoughts: Family planning is more important than tax savings
korea's inheritance and gift taxes are among the highest in the world, but with systematic planning, significant savings can be realized. a 10-year gifting strategy, utilizing the spousal exemption, and early transfer of appreciated assetsare key. a major overhaul is scheduled for 2028 but has not been finalized, so plan under current law but keep an eye out for changes.
if you have an estate worth more than $500 million, it's worth the cost to consult a tax professional. professional fees range from 1-3% of the value of your estate, but with proper planning, you can save 10-30% in taxes. remember, while tax savings are important, family harmony and planning for the future should be a priority.