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.
She raised the child alone for eleven years. The question was whether the law still cared.
A woman who had married a Korean man returned to her own country with their daughter when the marriage broke down. There was no court order. There was an understanding — he would send something each month — and for four months he did. Then the transfers stopped, the phone number changed, and she did what most parents in that position do. She absorbed it. She worked, she raised the child, and she stopped counting.
Eleven years later the daughter was preparing to start university and the mother, for the first time, asked a lawyer a question she assumed had an obvious answer: is it too late?
It was not. But the answer she received in 2026 is not the answer she would have received in 2023, and it is not the answer she will receive if she waits much longer. In July 2024 the Supreme Court of Korea changed the rule that governs exactly this situation.
The right to claim past support is not new
Korean law starts from a simple proposition: the cost of raising a child is a shared cost. Article 837 of the Civil Act puts the arrangements for a child’s upbringing — who raises the child, who bears the cost, and contact — before the family court where the parents cannot agree.
Where one parent has in fact carried the whole cost alone, the Supreme Court held in a 1994 en banc decision (13 May 1994, 92Seu21) that the caregiving parent may claim reimbursement of the portion the other parent should reasonably have borne — not only going forward, but for the period already past. That principle has been applied consistently since, and it does not depend on there having been a prior order, a written agreement, or a demand at the time.
So the existence of the claim was never really the difficulty. The difficulty was that nobody could say when it expired.
What changed in July 2024
Until 2024, a line of Supreme Court decisions held that a claim for past child support was not subject to any limitation period at all before it had been fixed by agreement or by a court. On 18 July 2024, an en banc decision (2018Seu724) departed from that position and replaced it with a two-stage rule.
While the child is still a minor, the limitation period does not run. Once the child reaches the age of majority and the duty of upbringing comes to an end, the limitation period begins — even if no agreement or court decision has ever fixed a figure.
The majority’s reasoning was that while the child is growing up, a claim for past support is still, in substance, part of providing for that child, and letting it expire would not serve the child’s welfare. Once the child is an adult, that character falls away and what remains is an ordinary reimbursement claim between two adults — a property right, and property rights are subject to limitation.
Majority in Korea is reached at 19 (Civil Act, Article 4). The general limitation period for claims of this kind is ten years (Civil Act, Article 162(1)).
| Where the child is now | Does the limitation clock run? | Practical position |
|---|---|---|
| Still under 19, no agreement or court decision on support | No | The past period is not expiring by the passage of time — but evidence is |
| Has turned 19, still no agreement or court decision | Yes — from the date of majority | Ten years under Article 162(1), counted from that date |
| A specific sum was already fixed by agreement or by the court | Different analysis | This is a fixed money claim; the question becomes collection rather than establishment |
The decision was not unanimous, and the disagreement is worth knowing about. Five Justices dissented, taking the view that a claim for past support keeps its family-law character even after the child grows up and should remain outside limitation altogether; one Justice wrote separately that the clock should start even earlier, from the time each expense was incurred. The majority rule is the law. But the split is a reminder that this is contested territory rather than settled arithmetic, and that a case sitting close to the ten-year line is not a case to test casually.
Being within time is not the same as being paid in full
A second decision, on 8 October 2024 (2023Seu637), dealt with a parent who claimed past support roughly sixteen years after a mutual-consent divorce. The Court confirmed the claim was available in principle and then set out the limits on it.
Past support does not have to be calculated on the same basis as support ordered for the future. Loading years of accumulated cost onto the other parent in a single sum may, depending on the facts, be excessive or contrary to good faith and equity. The court weighs how the sole-care arrangement came about, what was actually spent, whether and when the other parent understood they owed a duty, whether the expenditure was ordinary living cost or something exceptional such as medical treatment, and the financial circumstances of both parents.
The Court also said something that matters a great deal in international cases: what happened to the property side of the separation is relevant. Where a divorce settlement or property division was made — or deliberately not made — the court needs to look at that and at how it relates to the support burden, because separating parents typically decide the two questions in the light of each other. And where the child is already an adult, the court is no longer shaping a forward-looking figure for the child’s welfare; it is confirming and valuing what was spent, which is a different exercise requiring its own examination of both parents’ means.
The realistic expectation, then, is a judicially assessed contribution, not a spreadsheet total. That is not a reason to leave the claim alone. It is a reason not to plan around a number you calculated yourself.
Parents who were never married: a September 2025 decision
A large share of the enquiries we receive from abroad involve parents who were never married to each other. The child was born in Korea or to a Korean parent, legal paternity was never formally established, and the caregiving parent was told — sometimes by the other parent, sometimes by an official — that nothing could be claimed for the years before paternity was recognised.
On 11 September 2025 the Supreme Court addressed this directly (2023Meu11758). Acknowledgment of paternity operates retroactively to the child’s birth (Civil Act, Article 860), and Article 864-2 applies the Article 837 upbringing rules to a child whose paternity has been acknowledged. It follows, the Court held, that support for the period before the paternity judgment became final is claimable, within the range the other parent should reasonably bear. The Court added that this holds even where the child was in fact maintained by one parent throughout, unless that parent’s provision was already sufficient to match the standard of living of both parents together.
The same decision addressed waiver. A claim for future support that has not yet been fixed by agreement or by the court — and even one that has been fixed but has not yet fallen due — is not a fully independent property right. An agreement to give it up will not ordinarily bind the child. Documents signed years ago in difficult circumstances are, in other words, less final than the parent who drafted them tends to assume.
The cross-border layer that gets missed
Everything above is Korean domestic family law. When one parent lives outside Korea, two further questions come first, and they are decided under the Act on Private International Law.
Whether a Korean court can hear it. Article 60(1) gives the Korean courts jurisdiction over maintenance matters where the person entitled to support is habitually resident in Korea — which is the wrong way round for a parent and child living abroad. That is not the end of it. Article 3(1) confers general jurisdiction over a person habitually resident in Korea, so the residence of the parent being claimed against matters. Article 57 (parentage) and Article 59 (parental authority, custody and contact) supply further specific grounds. Which of these is engaged depends on the facts, and the answer is not the same for every family.
Which country’s law applies. Article 73(1) points maintenance obligations to the law of the habitual residence of the person entitled to support, with a fallback to the parties’ common national law where that first law would give no entitlement. Article 73(2) sends maintenance between divorced spouses to the law applied to a divorce granted or recognised in Korea, and Article 72 governs the parent-child relationship more broadly. A Korean court hearing the case does not automatically apply Korean law, and the limitation rule described above belongs to Korean law.
This is the point at which self-assessment tends to break down. It is entirely possible for a family to be within time under one country’s rules and outside it under another’s, and for the choice of forum to determine which set applies. It is also possible for a Korean determination to be obtained and then to face a separate collection problem — enforcing a child support order against assets in Korea is its own exercise, with its own requirements.
Where these cases go wrong
Rarely on entitlement. Almost always on timing, and on what was decided years earlier without advice.
A parent waits until the child finishes school before raising it, and by then the ten-year period that began at nineteen has quietly consumed most of the window. Or a settlement is signed abroad that appears to close the support question, and nobody checks how Korean law treats that document. Or the property side of the separation was left unresolved, and it turns out to be inseparable from the support claim under the 2024 reasoning. Or the years of receipts, transfers, school fees and medical bills that would have evidenced the actual expenditure were discarded, because the parent who kept them saw no prospect of ever using them.
None of these is fixed by finding the right form. Each is a decision about what to claim, where, and in what order — and where a claim covering a decade of a child’s life is involved, the difference between the right sequence and the wrong one is not marginal.
If this describes your situation, four facts usually locate it: the child’s date of birth, where the other parent has been living and since when, whether any agreement or court order was ever made about support in any country, and whether the child’s parentage is formally recorded in Korea. You are welcome to send those over KakaoTalk or WhatsApp, in English. We know that most parents in this position stopped asking years ago because they were told there was no point.
Where the other parent is in Korea and you are not, the case is normally run remotely — this is what our child support from a parent in Korea service is for. Related questions of custody and parental authority for foreign parents, and of consolation money and property division on a Korean divorce, frequently travel with it.
Key takeaways
- A parent who carried the cost of raising a child alone may claim reimbursement of the other parent’s reasonable share for the past period, not only for the future (Supreme Court en banc, 13 May 1994, 92Seu21; Civil Act, Article 837).
- Since the en banc decision of 18 July 2024 (2018Seu724), the limitation period does not run while the child is a minor but begins when the child turns 19 (Civil Act, Article 4) and runs for ten years (Article 162(1)). Five Justices dissented; the area is settled as law but contested in reasoning.
- Being within time does not produce a full arithmetic total. Under 2023Seu637 (8 October 2024), the court assesses a reasonable contribution and takes account of the parties’ means, how the sole-care situation arose, and what was — or was not — agreed on property division at separation.
- Where the parents were never married, 2023Meu11758 (11 September 2025) confirms that support for the period before a paternity judgment becomes final is claimable, because acknowledgment is retroactive to birth (Articles 860 and 864-2).
- An agreement waiving future support that has not yet been fixed, or has been fixed but is not yet due, will not ordinarily bind the child.
- For a parent living abroad, Korean jurisdiction and the governing law are separate threshold questions under the Act on Private International Law (Articles 3(1), 57, 59, 60(1), 72 and 73). A Korean court does not automatically apply Korean law.
- A determination and its collection are two different exercises. Obtaining the first does not secure the second.
Frequently asked questions
My child is 24 and I never received anything. Is it too late to claim past child support in Korea?
Not necessarily. Under the Supreme Court’s en banc decision of 18 July 2024 (2018Seu724), where no agreement or court decision has fixed a figure, the limitation period on past child support begins when the child reaches the age of majority — 19 under Article 4 of the Civil Act — and the general period is ten years under Article 162(1). A child of 24 is ordinarily within that window on those facts alone. Whether Korean limitation law is the law that applies to your case is a separate question that depends on where you and the child have been living, so the position should be assessed before any assumption is made in either direction.
Does the ten-year period mean I can only claim ten years of support?
No — the ten years is the period within which the claim must be brought, not a cap on the years of support that can be counted. The period claimed is the period during which you in fact bore the cost alone. What the court does with it is a separate matter: under the decision of 8 October 2024 (2023Seu637), past support need not be calculated on the same basis as future support, and the court assesses a contribution it considers reasonable, taking into account how the sole-care arrangement arose, what was actually spent, both parents’ financial circumstances, and any property division or financial settlement made at separation.
We were never married and he only accepted paternity recently. Can I claim for the years before that?
Yes, in principle. On 11 September 2025 the Supreme Court held (2023Meu11758) that because acknowledgment of paternity takes effect retroactively to the child’s birth under Article 860 of the Civil Act, and Article 864-2 applies the Article 837 upbringing rules to an acknowledged child, support for the period before the paternity judgment became final can be claimed within the range the other parent should reasonably bear. The Court added that this holds even where one parent in fact maintained the child throughout, unless that provision was already sufficient to match the standard of living of both parents together.
I signed a document years ago giving up child support. Does that end it?
Often not. The Supreme Court has held that a claim for future child support which has not yet been fixed by agreement or by the family court — and even one that has been fixed but has not yet fallen due — is not a fully independent property right, so a waiver will not ordinarily be effective against the child (2023Meu11758, 11 September 2025). The effect of any particular document still depends on what it says, when it was signed, which law governs it and what it was given in exchange for, so it should be reviewed rather than treated as final on its face.
This article is general legal information on child support claims in Korea involving a parent living abroad, not legal advice on any specific matter. Where a foreign legal system is also engaged, local counsel in that country should be consulted on its rules. Statutes and case law may change, and outcomes depend on the individual facts and evidence of each case.
