Foreign residents in Korea often assume that a will drafted at home, or a simple handwritten note stating their wishes, will be honored the same way here. Korean succession law doesn't work that way. The Civil Code (민법) recognizes exactly five statutory forms of a will (유언장), and each has its own mandatory elements — miss one, and the will can be declared void in its entirety, leaving the estate to pass under the default intestacy rules instead of the terms the person actually wanted.
→The Five Statutory Forms — and Why Most DIY Wills Fail
Korean law recognizes a holographic will (자필증서에 의한 유언), an audio-recorded will (녹음에 의한 유언), a notarized will (공정증서에 의한 유언), a sealed/secret document will (비밀증서에 의한 유언), and an oral will (구수증서에 의한 유언) available only in emergencies such as imminent death with no time to use another form. Each form has its own required elements set out in the Civil Code, and courts have repeatedly voided wills that substantially expressed the testator's true wishes but skipped one required detail — the form requirements aren't a formality to be read loosely.
The Handwritten Will Is the Most Common — and Most Frequently Voided
A holographic will (자필증서에 의한 유언) must be entirely handwritten by the testator: the full text, the complete date (year, month, and day — "sometime in March" is not sufficient), the testator's full address, name, and a signature or personal seal (인감), all in the testator's own hand. A will typed on a computer and merely signed is void, even if witnesses saw the person sign it and everyone agrees it reflects their true intent. Missing the full address, or dating it only by month, has been enough for Korean courts to void an otherwise clear holographic will.
→Forced Heirship (유류분) Can Override What the Will Says
Even a perfectly valid will doesn't give a testator unlimited freedom to disinherit close family. Korea's forced heirship system (유류분) guarantees a spouse and children a reserved minimum share of the estate regardless of what the will provides. An heir who receives less than their reserved share can bring a forced heirship reimbursement claim (유류분반환청구) against the heirs or beneficiaries who received more — generally within one year of learning about the shortfall, and no more than ten years after the death. A will leaving everything to one child, or to a new spouse, doesn't eliminate the other heirs' claims; it just shifts the fight to litigation over the reserved share.
A will that's perfectly valid in your home country can still be worthless for the part of your estate sitting in Korea.
1Which Country's Law Actually Governs the Will (준거법)
Korea's private international law generally allows a foreign national to choose the law of their nationality to govern succession of their estate, rather than defaulting to Korean law — but that choice has to be made correctly, and it interacts with separate rules on the formal validity of the will itself, which can be satisfied under the law of the place where it was made, the testator's nationality, or the testator's habitual residence, among other connecting points. Property physically located in Korea, particularly real estate, can also trigger additional formal steps regardless of which succession law applies to the estate as a whole. Drafting a will without addressing this upfront is how people end up with a document that works perfectly for assets back home and is contested or ignored for the Korean portion of the estate.
2Why the Notarized Will Is Usually the Safer Route for Foreign Residents
A notarized will (공정증서에 의한 유언) is prepared before a notary public with two witnesses present, who confirm the testator's stated wishes are recorded accurately and that the testator understood what they were signing. Because a notary and witnesses were involved in creating it, this form is generally harder for disappointed heirs to challenge later on grounds of forgery, incapacity, or improper form — a meaningful advantage for a foreign resident whose estate may already involve cross-border complications and multiple sets of heirs.
→What to Actually Do Before You Write a Will in Korea
- Decide the governing law question first — don't assume your home country's law automatically covers assets located in Korea.
- Use the notarized-will form for anything involving Korean property — it holds up better against a later challenge than a handwritten will.
- If handwriting a will anyway, follow the format exactly — full date, full address, name, and signature or personal seal, entirely in your own handwriting.
- Account for forced heirship shares — leaving unequal amounts to a spouse or children invites a reserved-share claim (유류분반환청구) that a will alone cannot prevent.