Hello, I am Attorney Kim Kwang-sik from Cheongchul Law Firm.

As of 2026, our society has seen the proportion of single-person households exceed 40%, rapidly reshaping the concept of 'family.' Such changes naturally lead to concerns about the posthumous inheritance of assets. In the past, it was taken for granted to distribute wealth according to the inheritance order set by civil law, but recently, there has been a notable increase in individuals who wish their assets to be used for the people they shared their lives with or for specific social values.

In particular, to complement the limitations of traditional wills, 'Will Substitute Trusts' that combine financial management and legal design functions have become a key tool for asset succession. Now, trusts have become a realistic solution for everyone who wants to design their own posthumous affairs, beyond just being a privilege of the wealthy.

[Question]

What specific differences does the Will Substitute Trust have compared to traditional wills, and in what practical situations is it most effective?

[Answer]

1. Concept of Will Substitute Trust

Our civil law imposes very strict requirements regarding the form of wills. If it fails to meet any of the legal forms, such as a handwritten document or a notarized deed, the will itself risks being deemed invalid. In reality, there are frequent intense legal disputes among heirs regarding the authenticity of wills and the mental capacity of the testator at the time of creation.

On the other hand, a Will Substitute Trust transfers ownership through a contract between the trustor and trustee (financial institutions or professionals), thus possessing strong external validity. As soon as the contract is signed, the management entity of the assets becomes clear, and without the complex verification processes typical of wills, the assets are safely delivered to beneficiaries according to the contract conditions after death. Especially for those living alone without close relatives to manage their estate after passing, this serves as the most reliable legal mechanism to ensure their wishes are upheld.

2. Strategic response to the changed inheritance environment and claims for statutory shares

The most sensitive point in recent inheritance disputes is undoubtedly 'statutory shares.' With the Constitutional Court's decision in 2024 abolishing the statutory shares for siblings, single-person households have diversified their inheritance planning rights compared to before. However, there remains a potential risk of claims for statutory shares if there are direct ascendants or descendants.

Legally, discussions are ongoing with conflicting lower court rulings regarding whether trust property should be included in the inheritance property that forms the basis for statutory share calculations. However, unlike simple gifts, trusts can be designed to separate the rights of beneficiaries from ownership, which minimizes the potential for disputes and serves as an essential strategy for asset holders who wish to pass on assets securely to specific beneficiaries. The ability to preemptively close legal gaps that may arise during posthumous execution under expert management is a sophisticated strength unique to trusts that wills do not possess.

3. Organic combination of pre-death elderly protection and posthumous asset succession

The true value of a Will Substitute Trust lies not only in posthumous distribution but also in the trustor's 'pre-death protection' function. Many worry about losing their ability to manage their wealth due to cognitive decline or sudden health deterioration in their later years. In such cases, a trust can be an excellent alternative.

If the principles of asset management in case of dementia, procedures for hospital fees and caregiving expenses, etc., are detailed in the contract, the assets can be used solely for the trustor's benefit, without the risk of misappropriation by third parties, even when the trustor's judgment is impaired. This expands the meaning of 'inheritance' beyond simply passing on property to include the legally guaranteed 'life management' of one's dignified later years. As of 2026, with the acceleration of aging, the demand for such protective features has become more pronounced.

4. Conclusion

A Will Substitute Trust cannot resolve the complex family relationships or tax issues faced by individuals merely with standardized contracts provided by financial institutions. Each phrase and condition inscribed in the trust contract can lead to interpretational differences among heirs after death and serve as the seed for another dispute.

Recently, the judiciary has shown a tendency to scrutinize the substantive purposes and rights relationships embedded in trust contracts far more rigorously than the formal aspects. Therefore, from the contract execution stage, it is crucial to examine potential legal dispute scenarios, optimize tax burdens, and, most importantly, build a response logic to ensure the trustor's intentions are realized without distortion.

Cheongchul Law Firm offers in-depth consultations and strategies to ensure that clients' valuable assets are used in accordance with their wishes amid rapidly changing demographic structures and family forms. If you are concerned about posthumous asset distribution or elderly asset management, we recommend calmly designing the most suitable legal arrangements for your situation together with experts from the initial stage.

Cheongchul Law Firm is composed solely of attorneys from the country's top five law firms, prosecutorial backgrounds, and corporate legal teams. Rather than a single lawyer, a team of specialized attorneys related to each case is formed to respond. Cheongchul Law Firm provides comprehensive solutions for the entire business beyond just solving specific issues, focusing on achieving what clients desire. If you need assistance in achieving your goals, please do not hesitate to contact Cheongchul.