There is no such thing as money the family can just hand over — how the same ₩150M became ₩0 or ₩9.7M in gift tax

Parents gave their marrying child ₩150M. The family next door gave the same ₩150M. One family owes ₩0 in gift tax; the other owes ₩9.7M. The money is the same and so is the recipient, an adult child. What differed was not the money but the timing of the gift. It is easy to assume money moving inside a family has nothing to do with tax, but the law actually keeps more detailed rules for money between family members than for anyone else.

Gift tax is paid by the person who receives property for nothing. The payer is not the parent but the child who received it, a point that trips people up from the start. Order matters: calculate after you have received the money and your options have already shrunk.

Money from a parent to an adult child is free of gift tax up to ₩50M; for a minor child the figure is ₩20M. But this deduction carries a little-known condition: ten-year aggregation. Deductions taken within the ten years before the gift are added together, and only ₩50M in total is allowed. It is not ₩50M per gift. It is a ten-year account holding ₩50M. If you used the whole ₩50M three years ago, the deduction on another ₩100M today is ₩0, the full ₩100M is taxable, and the tax comes to ₩9.7M. The deduction is also grouped by giver: ₩50M from father and ₩50M from mother, received separately, still share one ₩50M deduction because lineal ascendants count as one group. Between spouses the figure is ₩600M; for other relatives such as a son- or daughter-in-law it is ₩10M.

Whatever exceeds the deduction becomes the tax base, and a stepped rate applies: 10% up to ₩100M, 20% up to ₩500M, 30% up to ₩1B, 40% up to ₩3B, 50% above that. An adult child receiving ₩100M deducts ₩50M, pays 10% on the remaining ₩50M and, with the on-time filing credit, owes ₩4.85M. Receive ₩300M and the tax base of ₩250M climbs into the 20% band for ₩38.8M; ₩500M gives ₩77.6M. Going from ₩100M to ₩300M, three times the gift, the tax rises eightfold. Receive real estate and there is one more tax: acquisition tax, a local tax, on top of the national gift tax. Today's figures are gift tax only.

The rule that split the two families: a gift from a lineal ascendant within two years before or after the marriage registration date gets an extra ₩100M deduction on top of the basic one. Childbirth works the same way. Receive within two years of a child's birth or adoption and ₩100M is deducted. Marriage and childbirth together are capped at ₩100M for life. So a marrying child can receive ₩150M tax-free: the ₩50M basic deduction plus ₩100M for marriage, provided no basic deduction has been used in the past ten years. The second family gave the same money three years after the registration. With the two-year window closed, only the ₩50M basic deduction applied, and the remaining ₩100M drew ₩9.7M in tax. Timing alone decided a ₩100M deduction. Conditions attach: take the deduction before the wedding and fail to marry within two years and a settlement procedure follows, and there are separate rules for returning the money for unavoidable reasons.

The paperwork both families kept was the filing. File within three months of the last day of the month in which the gift was received and 3% of the assessed tax is credited. Taking the second family's ₩100M tax base as the example, the filer owes ₩9.7M while the non-filer owes the uncredited ₩10M plus penalties. A common question: if the tax is ₩0, why file at all? The amount may not change, but the filing is a record. It puts on the official books when the money came and from whom, and that becomes your evidence of the source of funds when you later buy a home. The law contains a presumption that acquisition funds were gifted: if your occupation and income make it hard to believe you bought the property on your own, the purchase money is presumed to be a gift. A filed record is your answer when that moment comes. Some think of calling it a loan instead, but a separate provision treats the interest saved on interest-free or low-interest loans between family members as a gift in itself. If the yearly interest saving is under ₩10M it is left out, but at or above that line the saving is taxed as a gift. This is not a structure you can dress your way around.

In sum: the parent-to-child deduction is ₩50M per ten years, with father and mother as one giver. Above that, rates step from 10% to 50%. Marriage (two years before or after registration) and childbirth (two years from birth or adoption) carry a separate ₩100M deduction, and filing within three months delivers both the 3% credit and a record of the source of funds. What split ₩9.7M from ₩0 was not a loophole but walking through a door the law left open, on time.

Two things to do now. First, write down everything you received from your parents over the past ten years. That tells you how much is left in the deduction account. Second, if a marriage or a birth falls within the next two years, talk with the family about whether the planned help can be moved inside that window. Today's story covers the skeleton of cash gifts only. Real-estate gifts bring valuation and acquisition tax, and the return and settlement of the marriage deduction have detailed rules of their own. For large amounts, have a tax adviser confirm.