This is a composite scenario, drawn from situations that arise in Korean international family practice and adapted for illustration. It does not depict any specific case or client.
“We were never really married.” In Korea, that is a claim — and it has a deadline.
A foreign national had married a Korean spouse and moved to Seoul. The marriage collapsed within a few months, in circumstances that left them convinced the whole thing had been arranged in bad faith from the start. Friends told them what friends usually tell people in that position: don’t file for divorce — get it annulled. It was never a real marriage.
They spent the following year assembling messages, photographs, and testimony from people who had witnessed the courtship. By the time they sat down with a lawyer, two things had become clear. The claim they had been preparing was far harder than they had been told. And a second, much easier claim — one that fit their facts better — had expired months earlier, quietly, on a deadline nobody had mentioned.
The English word “annulment” is doing a lot of hidden work in that story. Korean law does not have one annulment. It has two separate claims, with different grounds, different time limits, and — this is the part that surprises people most — different financial consequences for the person who wins.
Three doors, and one line that decides which one you are standing at
The dividing line is not how bad the marriage was. It is when the problem arose. If something was already wrong at the moment the marriage report was filed, you are in the territory of nullity or annulment. If the relationship broke down afterwards, you are in the territory of divorce — no matter how serious the breakdown.
Getting this wrong is not a matter of style. A claim built on the wrong door can be dismissed without the court ever reaching the merits of what happened to you.
| Claim | Basis | When the problem arose | Effect on the marriage |
|---|---|---|---|
| Void marriage 혼인무효 |
Civil Act Article 815 | At the moment the marriage was formed | No effect from the beginning |
| Annulment 혼인취소 |
Civil Act Article 816 | At the moment the marriage was formed | Valid until annulled; the annulment does not operate retroactively (Article 824) |
| Divorce 이혼 |
Agreement, or judicial divorce | During the marriage | Dissolved going forward |
The Family Litigation Act sorts them the same way. A claim that a marriage is void is a Type Ga (Category A) family litigation case; annulment of a marriage is a Type Na (Category B) case; and a damages claim arising from either is a Type Da (Category C) case — all within the exclusive jurisdiction of the Family Court (Article 2(1)).
A marriage is void only in the cases the statute names
Nullity is not available because a marriage was a mistake, or because one party behaved appallingly. Civil Act Article 815 lists the situations in which a marriage is void:
- where there was no agreement to marry between the parties;
- where the marriage violates Article 809(1), which prohibits marriage between blood relatives within the eighth degree;
- where the parties are, or were, in a direct affinity relationship;
- where the parties were in a direct blood relationship through adoptive parents.
A note on the second item: in 2022 the Constitutional Court held the nullity rule in Article 815, subparagraph 2 — not the marriage prohibition in Article 809(1) itself — to be incompatible with the Constitution and directed that it be amended by 31 December 2024, leaving it in force until then (2018Hun-Ba115). That deadline passed without an amendment being enacted, and the provision still appears in the statute book in its original form. Where a consanguinity issue is actually in play, the status of the provision at the relevant time — and the reach of that decision — has to be checked on the individual facts rather than assumed.
In practice, almost every contested case turns on the first item. The others are decided by objective family relationships. The first asks a court to reconstruct something invisible: what was in the parties’ minds on the day the marriage report was filed.
What “no agreement to marry” actually means
The Supreme Court reads Article 815, subparagraph 1 as meaning that there was no meeting of intent to create the mental and physical union that is socially recognised as marriage (Supreme Court, 10 June 2010, 2010Meu574).
Here is where the widespread assumption fails. People reason backwards: the marriage was a disaster, therefore it cannot have been sincere at the start. Korean courts look the other way round. The question is fixed to the moment of the report, and later conduct — even conduct that would clearly justify a divorce — does not by itself prove that the intent was absent from the beginning. The Family Court must examine specifically whether the parties set out only to manufacture the outward appearance of marriage, or whether the will to sustain the marriage disappeared afterwards (Supreme Court, 10 December 2021, 2019Meu11584, 11591; Supreme Court, 28 July 2022, 2020Meu13975).
For cross-border marriages, the Court has gone further and told the lower courts to be more careful, not less. In a case between a Korean national and a Vietnamese spouse, the lower court had found the marriage void: the spouse had lived with the plaintiff for only about three weeks, left the home immediately after receiving an alien registration card, had repeatedly asked for money, and there had been no sexual relationship. The Supreme Court set that aside.
“Where a national of the Republic of Korea marries a Vietnamese spouse, the parties must go through a number of procedures prescribed by the laws of both countries, and the shape of married life may differ because of language barriers and differences of culture and custom. It is therefore necessary to judge with care whether there was no agreement to marry between the parties at the time of the marriage report.”
“The remaining circumstances relied on by the lower court are largely circumstances arising after the marriage was formed, amounting in substance to grounds for divorce — that the defendant did not make efforts to maintain the marriage and readily gave up on continuing the marital relationship. It is difficult to conclude from such circumstances that there was no intent to marry from the outset.”
— Supreme Court, 27 January 2022, 2019Meu287
The reasoning matters for anyone in an international marriage. Because the parties had gone through the formalities of two legal systems — the Korean spouse had travelled to the other party’s family home abroad, once with his parents — and had invested substantial time and effort in reaching the marriage, the Court treated those facts as evidence weighing towards genuine marital intent. Short cohabitation and an abrupt departure were not enough to displace it.
That cuts both ways, and which way it cuts is rarely obvious in advance. The same record — the visa file, the two sets of formalities, the visits — can be read as proof that the marriage was seriously intended or as the scaffolding of an arrangement, depending on what surrounds it. Assuming it favours your side is one of the more common and more expensive mistakes in these cases.
Annulment: easier grounds, punishing deadlines
Where the facts fall short of nullity, annulment may still be open. Civil Act Article 816 allows a court to annul a marriage where:
- the marriage violates the formation requirements in Articles 807 to 809 or Article 810 (which prohibits marriage by a person who already has a spouse), other than where that violation makes the marriage void;
- one party did not know that the other had, at the time of the marriage, a serious illness or other grave cause making married life impossible to continue;
- the declaration of intention to marry was made through fraud or duress.
The third ground is the one that fits many of the situations people describe as “she never intended to stay married to me” or “he lied about everything.” It is often the better-fitting claim. It is also the one that disappears fastest.
| Ground | Time limit | Running from |
|---|---|---|
| Fraud or duress (Art. 816, subpara. 3) | 3 months (Art. 823) | The day the fraud became known, or the day the duress ended |
| Serious illness or other grave cause (Art. 816, subpara. 2) | 6 months (Art. 822) | The day the other party learned of it |
Three months is not a long time to discover you have been deceived, absorb it, find a lawyer who works in your language, and decide what to claim. It is shorter still if you are living outside Korea, or if the discovery arrives in fragments over a period of months and it is not obvious which day started the clock. Bigamy is treated differently — a marriage contracted in breach of Article 810 may be challenged by the parties, their spouses, lineal blood relatives, collateral blood relatives within the fourth degree, or the public prosecutor (Article 818) — but the general pattern holds: the longer you wait, the fewer doors remain open.
Winning nullity can leave you with less than winning a divorce
This is the part almost nobody is told in advance, and it is the reason the choice of claim cannot be made on emotional grounds alone.
An annulment, although it does not operate retroactively (Article 824), is treated as a dissolution that carries the usual family-law consequences with it: property division on annulment is routed through the Family Court by the Family Litigation Act (Article 2(1), Type Ma item 4), while the rules on the custody and support of children are applied to annulment by the Civil Act itself (Article 824-2). A void marriage, by contrast, is a declaration that the marriage never took effect — and a relationship that never took effect does not generate the marital claims that flow from one having ended.
That does not leave a child unprotected. A child of a void marriage is treated as born out of wedlock (Civil Act Article 855(1)), and once parentage is acknowledged, custody, child support, visitation and parental authority are decided by the Family Court on that basis (Civil Act Articles 864-2 and 909(4), (5)). But it is a different route, resting on a different set of facts, and it is not something that follows automatically from the nullity judgment.
| After a successful claim | Void marriage | Annulment |
|---|---|---|
| Damages against the party at fault | Yes — Article 806 applies (Art. 825) | Yes — Article 806 applies (Art. 825) |
| Division of property built up together | Not a claim the statute routes through this door | Expressly provided for (Family Litigation Act Art. 2(1), Type Ma item 4) |
| Custody and child-support dispositions | Not through the marriage itself. The child is treated as born out of wedlock (Civil Act Art. 855(1)), so custody, child support, visitation and parental authority are decided on the footing of acknowledgment of parentage instead (Arts. 864-2, 909(4)–(5)) | Expressly provided for (Civil Act Art. 824-2) |
| The marital record | Treated as never having taken effect | Valid until the annulment (Art. 824) |
So a foreign spouse who spent six years contributing to a household, and who wins a declaration that the marriage was void, may find that the very victory has removed the basis for the property claim they assumed would follow. Whether that trade is worth making depends entirely on what you are actually trying to achieve — clearing a record, recovering money, protecting a child’s position, or all three. Those aims can point at different claims.
This is why nullity is commonly pleaded as a principal claim with divorce or annulment pleaded in the alternative. But that is not simply a matter of writing two claims on one page. The factual case for “this was never a marriage” and the factual case for “this marriage broke down” rest on different premises, and pressing one hard can weaken the other. Deciding how far to run each argument, and in what order, is usually where these cases are won or lost.
The 2024 change: a divorce no longer closes the door
For decades, the position was that once a marriage had been dissolved by divorce, a claim that the same marriage was void concerned a purely past legal relationship, and there was no interest in obtaining a declaration. Many people took the practical divorce, cleared the immediate problem, and later discovered that the record itself was the problem — and that it was too late.
The Supreme Court, sitting en banc, changed that.
“Where a marital relationship has already been dissolved by divorce, the former marital relationship becomes a past legal relationship. However, because a marital relationship, being a status relationship, gives rise to numerous legal relationships premised upon it, seeking a declaration that the marital relationship itself is void may be a more effective and appropriate means of resolving the related disputes at once than repeating separate procedures to confirm the effect of each of them. Accordingly, absent special circumstances, the interest in seeking a declaration that a marriage is void should be recognised even after the marital relationship has already been dissolved.”
— Supreme Court en banc, 23 May 2024, 2020Meu15896 (overruling prior authority)
The Court gave concrete reasons, and they are worth reading as a checklist of why the distinction is not academic. A void marriage and a divorced marriage produce different legal effects: a divorce operates only for the future, so legal relationships created on the strength of the marriage before it remain valid, whereas a judgment that the marriage is void takes effect against third parties as well (Family Litigation Act Article 21(1)) — meaning, for example, that a third party can no longer pursue a former spouse for joint liability on household debts incurred during the supposed marriage (Civil Act Article 832). The Court also pointed out that a nullity judgment is the objective evidence required to correct a family register that wrongly records a marriage.
The practical opening is real, particularly for people who took a quick divorce years ago to escape a situation and have been living with the entry ever since. But the reasoning cuts precisely and no further: the Court decided that the courthouse door is open. Whether the marriage is actually void still has to be proved under Article 815, on the same demanding standard.
The cross-border layer
An international marriage adds questions that have to be settled before the merits are reached at all.
Which law measures the marriage. Under the Act on Private International Law, the substantive requirements for marriage are determined for each party by that party’s own national law (Article 63(1)). The form of the marriage follows the law of the place where it was made or the national law of one of the parties — but where the marriage is made in Korea and one party is a Korean national, Korean law applies (Article 63(2)). A marriage can therefore be sound in one direction and defective in the other.
Whether a Korean court will hear it. Article 56 of the same Act sets out when Korean courts have international jurisdiction over marital cases — among them, where one spouse’s habitual residence is in Korea and the couple’s last common habitual residence was in Korea; where the plaintiff and some or all of the minor children habitually reside in Korea; where both spouses are Korean nationals; and where a Korean national habitually resident in Korea brings proceedings solely to dissolve the marriage. If you have left Korea, or never lived there, this is the first question — not the last.
Whether the other side can be reached. A spouse who cannot be located does not make the case impossible, but establishing that service abroad has been attempted and why it has not succeeded takes real time. Where the two countries’ civil registries also disagree about your status, the order in which each record is corrected becomes a separate problem in its own right.
Immigration consequences. Where a foreign spouse is in Korea on a marriage-based status, unwinding the marriage may bear on that status, and it is better to have looked at that in advance than to be surprised by it.
After a nullity judgment
A judgment does not update the records by itself. Where a final judgment requires correction of the family register, the person who brought the claim must apply for the correction within one month of the judgment becoming final, attaching a certified copy of the judgment and a certificate of finality (Act on Registration of Family Relations Article 107). How the void marriage is then reflected in the register depends on the nature of the ground. Separately, damages for both financial and non-financial harm may be claimed against a party at fault (Civil Act Article 825, applying Article 806).
If a marriage on paper is still following you
People often carry these situations for years before raising them, partly because the subject is uncomfortable and partly because they assume nothing can be done. What tends to force the issue is something ordinary — a remarriage, an inheritance, a visa application, a document that has to be certified — and by then the choice of claim may already have narrowed.
Yeohae Law Office handles international divorce and family matters in Korea for foreign nationals and for Korean families with a spouse abroad. Where both spouses agree that the marriage should end and the question is how to do it cleanly from a distance, our premium uncontested divorce service may be the more direct route; where the marriage itself is in question, that is a different case and is built differently. If a Korean marriage record is causing you difficulty, you are welcome to set out the sequence — when the marriage was reported, what you knew at the time, and when you learned otherwise — over KakaoTalk or WhatsApp. The dates usually tell us within one conversation which doors are still open.
Key takeaways
- Korean law separates a void marriage (Civil Act Art. 815) from an annulment (Art. 816). Both concern defects existing when the marriage was formed; divorce concerns what happened afterwards.
- Nullity for “no agreement to marry” is judged as at the date of the marriage report. Later breakdown, however serious, does not by itself establish it (Supreme Court, 2010Meu574; 2019Meu11584, 11591; 2020Meu13975).
- In cross-border marriages the Court requires a more careful assessment, treating the effort of navigating two legal systems as evidence of genuine intent (Supreme Court, 27 January 2022, 2019Meu287).
- Annulment deadlines are short: 3 months for fraud or duress (Art. 823), 6 months for a serious illness or other grave cause (Art. 822).
- On annulment, property division, custody and child support are expressly routed through the Family Court. Where the marriage is declared void, property division is not — and custody and child support have to be reached by a different route, through acknowledgment of the child. Winning the stronger-sounding claim can change, or remove, claims you wanted.
- Since 23 May 2024, a nullity claim may be brought even after the marriage was already dissolved by divorce (Supreme Court en banc, 2020Meu15896). The threshold under Article 815 is unchanged.
- After a nullity judgment, apply to correct the family register within one month of finality (Act on Registration of Family Relations Art. 107).
Frequently asked questions
Is my marriage void if we registered it but never actually lived together?
Not automatically. Civil Act Article 815, subparagraph 1 makes a marriage void where there was no agreement to marry, which the Supreme Court reads as the absence of any meeting of intent to create the mental and physical union socially recognised as marriage (2010Meu574). The assessment is fixed to the date of the marriage report. Never having lived together is a significant circumstance, but the court weighs it alongside how and why the marriage came about and what happened around the time of the filing — and in an international marriage it is directed to judge with particular care (2019Meu287).
I was deceived into marrying. Is that nullity or annulment?
Fraud in the declaration of intention to marry is in principle a ground for annulment, not nullity (Civil Act Article 816, subparagraph 3) — and the claim cannot be brought once three months have passed from the day the fraud became known (Article 823). Only where the facts show that the other party never intended to be a spouse at all does nullity come into view. Because the two claims carry different consequences and one of them expires quickly, which to build is a decision that turns on the specific facts and on what you are trying to achieve.
We already divorced. Can I still have the marriage declared void?
Yes. On 23 May 2024 the Supreme Court, sitting en banc, held that absent special circumstances the interest in seeking a declaration of nullity is recognised even after a marriage has been dissolved by divorce (2020Meu15896), overruling the earlier position. The Court’s reasons included that a nullity judgment takes effect against third parties (Family Litigation Act Article 21(1)) and that it is the evidence needed to correct a family register. Being able to bring the claim is not the same as winning it: the Article 815 grounds still have to be proved.
My spouse never came to Korea and I cannot reach them. Can I still bring a claim?
Not being able to locate a spouse does not close the procedure, but several questions arise in sequence. Whether a Korean court has international jurisdiction is governed by Article 56 of the Act on Private International Law; which law measures the requirements of the marriage is governed by Article 63; and serving documents on a party outside Korea takes time and has to be shown to have been attempted. Cases of this kind commonly also involve two national registries recording different things, which has to be untangled in a workable order. It is worth mapping the whole structure before starting rather than after.
Pyoung-ho Kim (Kim Pyoung-ho), Attorney at Law, Yeohae Law Office
Korean attorney; passed the Korean Judicial Examination; completed the Judicial Research and Training Institute (43rd class); registered with the Korean Bar Association as a specialist in divorce. Recipient of the 2021 Outstanding Lawyer Award. Has handled 500+ cases across all practice areas since 2014. Yeohae Law Office, 16 Beopwon-ro, Seocho-gu, Seoul (Jeonggok Building, Suite 406).
This article is general legal information on the nullity and annulment of marriage, not legal advice on any specific matter. Statutes and case law may change, and outcomes depend on the individual facts and evidence of each case.
