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Understanding Trust Mortis Causa in South Africa and Its Worthwhile Benefits

  • Writer: Connect Cape Town
    Connect Cape Town
  • Dec 14, 2025
  • 4 min read

Updated: Dec 26, 2025

When planning your estate, you might come across the term trust mortis causa. This type of trust is often mentioned in legal and financial circles in South Africa, but many people are unsure what it means or whether it is a good option for their estate planning. This post explains what a trust mortis causa is, how it works in South Africa, and whether it is worthwhile to include one in your will.


Eye-level view of a legal document with a pen on a wooden desk

What Is a Trust Mortis Causa?


A trust mortis causa is a trust that is created through a will and only comes into effect after the death of the person who made the will (the testator). The term "mortis causa" means "because of death." This trust holds and manages assets for the benefit of the beneficiaries named in the will.


Unlike an inter vivos trust, which is set up during a person’s lifetime, a trust mortis causa only activates upon death. The assets placed in this trust are managed by a trustee, who follows the instructions laid out in the will to distribute or manage the assets for the beneficiaries.


Key Features of a Trust Mortis Causa


  • Created by a will: It is part of the testator’s last will and testament.

  • Takes effect after death: The trust only exists once the testator has passed away.

  • Managed by trustees: Trustees handle the assets according to the will’s instructions.

  • Protects beneficiaries: It can safeguard assets for minors, disabled persons, or beneficiaries who may not be financially responsible.


How Does a Trust Mortis Causa Work in South Africa?


In South Africa, estate planning often involves trusts to protect assets and ensure smooth transfer to heirs. A trust mortis causa is a common tool used for this purpose.


When the testator dies, the executor of the estate will transfer the specified assets into the trust. The trustees then manage these assets according to the terms set out in the will. This can include paying out income or capital to beneficiaries over time, or holding assets until certain conditions are met, such as a child reaching adulthood.


Advantages of Using a Trust Mortis Causa


  • Control over asset distribution: The testator can specify exactly how and when beneficiaries receive their inheritance.

  • Protection from creditors: Assets in the trust may be protected from claims against beneficiaries.

  • Support for vulnerable beneficiaries: The trust can provide for minors or people unable to manage their inheritance.

  • Tax planning: Trusts can sometimes offer tax benefits, although this depends on the specific circumstances and should be discussed with a tax advisor.


Example Scenario


Imagine a parent who wants to leave an inheritance to their children but worries that one child might spend the money irresponsibly. By creating a trust mortis causa, the parent can appoint trustees to manage the inheritance and release funds gradually or for specific purposes like education or health care.


High angle view of a family home with a garden

Is It Worthwhile to Get a Trust Mortis Causa?


Deciding whether to include a trust mortis causa in your estate plan depends on your personal circumstances and goals. Here are some factors to consider:


When a Trust Mortis Causa Makes Sense


  • You want to protect assets for minors or vulnerable beneficiaries.

  • You want to control how and when beneficiaries receive their inheritance.

  • You want to protect assets from potential creditors or divorce settlements.

  • You want to ensure that your estate is managed professionally after your death.


When It Might Not Be Necessary


  • Your estate is simple, and you trust your beneficiaries to manage their inheritance responsibly.

  • You want to avoid the additional costs and administrative work involved in managing a trust.

  • You do not have specific conditions or protections you want to impose on your inheritance.


Costs and Administration


Setting up a trust mortis causa involves legal fees for drafting the will and trust provisions. After death, trustees must manage the trust, which can involve ongoing administration costs. These costs should be weighed against the benefits of protection and control.


Legal Advice Is Essential


Because trusts involve complex legal and tax considerations, it is important to consult with an estate planning attorney or financial advisor. They can help you understand how a trust mortis causa fits into your overall estate plan and whether it aligns with your goals.


Summary


A trust mortis causa is a useful estate planning tool in South Africa that allows you to create a trust through your will, which only takes effect after your death. It offers control over asset distribution, protection for vulnerable beneficiaries, and potential tax benefits. However, it also involves costs and administrative responsibilities.


Consult with Family Officer


Family Officers provide innovative solutions to empower families alongside their financial partners. They serve as the connection between families and financial professionals (such as accountants, financial advisors, and lawyers), ensuring families make informed decisions. Our model is based on the percentage of savings we achieve, allowing us to manage all your communications from a centralized location and assist with strategic planning for family and administrative functions without costing you more.

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