Gift Tax Explained Through Real Cases

Let’s work through a parent gifting 150,000,000 KRW cash to an adult child. When an ascendant gifts to an adult descendant, the deduction available (summed over 10 years) is 50,000,000 KRW. So the tax base is 150,000,000 − 50,000,000 = 100,000,000 KRW. That lands exactly in the gift tax table’s “100M KRW or below” band (10%, no progressive deduction), so the tax is 100,000,000 × 10% = 10,000,000 KRW. Filing on time adds a further filing credit (typically 3%), lowering the amount actually owed below this.

A tax base of exactly 100,000,000 KRW trips people up. The next bracket (20%) only kicks in for the portion above 100,000,000 KRW, so a base of exactly 100,000,000 KRW still falls in the 10% band. Cross that line by even 1 KRW and the 20% bracket formula (base × 20% − 10,000,000 progressive deduction) applies to the excess — a reminder that small changes to the gifted amount can shift the whole bracket.

The marriage/childbirth gift deduction, introduced in 2024, lets you add up to an extra 100,000,000 KRW on top of the standard 50,000,000 KRW deduction, if the gift from an ascendant comes within 2 years before/after the marriage registration (or within 2 years of childbirth) — Inheritance and Gift Tax Act Art. 53-2. Under the same parent-child relationship, gifting 200,000,000 KRW ahead of a child’s wedding raises the deduction to 50,000,000 + 100,000,000 = 150,000,000 KRW, cutting the tax base to 200,000,000 − 150,000,000 = 50,000,000 KRW. That also falls in the 10% band, giving a tax of 50,000,000 × 10% = 5,000,000 KRW — half of what would be owed without the marriage deduction (a 150,000,000 KRW base would owe 10,000,000 KRW).

The deduction isn’t reset each time you give a gift — it applies once per 10-year sum of gifts between the same giver and receiver. Gift 30,000,000 KRW this year and 20,000,000 KRW three years later, and within the 10-year window they’re summed to 50,000,000 KRW, exactly filling the basic deduction. Only after 10 years does a fresh deduction limit apply. Splitting gifts into installments therefore doesn’t multiply the deduction — long-term gift planning centers on spacing gifts across 10-year windows.

In principle, the recipient (the person gifted to) bears the duty to file and pay gift tax. The filing deadline is within 3 months of the last day of the month the gift was made, and filing within that window earns the filing credit mentioned earlier (typically 3%). Missing it adds a failure-to-file penalty (typically 20%) plus a late-payment penalty, sharply increasing the burden — so if a gift is planned, mark the filing deadline on the calendar in advance.

The two taxes share the same progressive rate table (10–50%), but a gift’s deduction limit refreshes every 10 years, while inheritance is calculated just once, at death. That’s why, for larger estates, a common strategy is gifting in stages over one’s lifetime (spaced 10 years apart) to avoid a single high-bracket hit at inheritance. But gifts made within a certain period before death are added back into the estate, so splitting gifts isn’t automatically advantageous in every case — design the approach with a tax professional for your specific situation.

When an ascendant gifts to a minor child, the 10-year deduction cap is 20,000,000 KRW, not the 50,000,000 KRW that applies to an adult child. Splitting gifts into installments before the child turns 19 still falls under the same 10-year sum rule. One common misconception: turning 19 does not restart the 10-year window — the sum always looks back 10 years from the gift date and nets off deductions already used. What changes at adulthood is the cap (20M → 50M KRW), not the clock. So if the minor-age allowance was fully used, the larger cap only becomes fully available once 10 years have passed.

A gift that comes with a liability attached — such as a home carrying a jeonse deposit or mortgage debt (a “burdened gift”) — is calculated differently from an ordinary gift. The portion of debt the recipient assumes is split off and taxed as capital gains tax, not gift tax, while gift tax applies only to the remaining net asset. Tax authorities often verify after the fact whether the debt genuinely transferred to the recipient (e.g., the real transfer of the obligation to return a jeonse deposit), so anyone considering a burdened gift should document the debt arrangement clearly and consult a tax accountant beforehand.

Even if the recipient is a non-resident living abroad, Korean gift tax law generally still applies as long as the giver is a Korean resident. Non-residents can face limits on certain deductions (such as the spousal deduction), and double taxation can arise depending on the tax law of the country they live in — so check whether a tax treaty between the two countries applies.

Gift and inheritance taxes share a rate table but differ sharply in deduction structure, so it’s worth comparing both calculators. Try the gift tax calculator for your situation now, or the inheritance tax calculator to compare against inheriting instead. This guide reflects information as of 2026-07-19; rates and deductions can change, so confirm specifics with the National Tax Service and a licensed tax accountant.