What is a Testamentary Trust?

Tiffarah McLean | Aug 12 2026 17:30

Estate planning is about more than deciding who will inherit your assets. In some situations, it may also involve determining how and when those assets are distributed. One tool that can help accomplish those goals is a testamentary trust.

 

While the term may sound complex, a testamentary trust is simply a trust created through a will that takes effect after death. For some families, it can provide additional flexibility, protection, and peace of mind when planning for the future.

 

Understanding how testamentary trusts work can help you determine whether this planning tool is appropriate for your circumstances.

 

What Is a Testamentary Trust?

 

A testamentary trust is established within a will and becomes active after the person who created the will passes away. Rather than distributing assets directly to beneficiaries, certain assets are placed into the trust and managed by a trustee according to the instructions in the will. In New Brunswick, a testamentary trust is generally created through a properly executed will, and the trustee’s powers and duties are shaped by the will and New Brunswick trust law.

 

The trustee administers the trust in accordance with the terms of the will and applicable law and, where the will gives discretion, decides how and when distributions are made.

 

The trust can remain in place for a specific period of time or until certain conditions are met, depending on the goals of the person creating the estate plan.

 

Situations Where a Testamentary Trust May Be Helpful

 

Testamentary trusts are often used when a beneficiary may need additional support or protection.

 

For parents of young children, a testamentary trust can provide a structured way to manage an inheritance until a child reaches a chosen age or milestone. Rather than receiving a large inheritance all at once, funds can be used for education, living expenses, or other purposes outlined in the will.

 

A testamentary trust may also be considered when supporting a beneficiary who has a disability, struggles with financial management, or may be vulnerable to outside influence.

 

Blended families sometimes use testamentary trusts as part of their estate planning strategy as well. A trust can help ensure that a surviving spouse is supported while also preserving assets for children from a previous relationship, subject to the rest of the estate plan and applicable family and estate-law obligations.

 

Every family situation is different, which is why trust planning should always be tailored to specific goals and circumstances.

 

Understanding the Trustee's Role

 

The trustee plays a critical role in the administration of a testamentary trust. This individual is responsible for managing trust assets, following the terms of the will, maintaining records, and acting in the best interests of the beneficiaries.

 

Depending on the nature of the trust, trustee responsibilities may include managing investments, paying expenses, preparing reports, and making distributions over an extended period.

 

Because these duties can be significant, selecting the right trustee is an important part of the planning process. The person chosen should be trustworthy, organized, and capable of handling financial and administrative responsibilities.

 

Some families consider a trust company or another qualified professional trustee, depending on the estate, the proposed trustee, and the anticipated administration.

 

Benefits and Limitations of Testamentary Trusts

 

Like any estate planning tool, testamentary trusts offer both advantages and considerations.

 

The primary benefits often include greater control over how assets are distributed, protection for vulnerable beneficiaries, and the ability to provide long-term support in accordance with the wishes outlined in the will.

When a beneficiary receives means-tested benefits or has decision-making or capacity-related needs, the trust terms should be tailored carefully because distributions may affect eligibility or other supports.

 

At the same time, testamentary trusts can involve additional administration, ongoing recordkeeping, and tax reporting requirements. The Canadian tax treatment of a testamentary trust depends on its terms, residence, income, distributions, and other facts. Tax consequences should be reviewed as part of the planning process. Because a trust continues after death, there may also be costs associated with its ongoing management.

 

For this reason, a testamentary trust is not necessary for every estate. The decision should be based on individual family circumstances and long-term planning objectives.

 

Creating a Plan That Reflects Your Goals

 

Estate planning works best when it reflects the unique needs of the individuals and families involved. A testamentary trust can be a valuable tool in some situations, but it should be carefully drafted to ensure it aligns with your wishes and provides clear guidance for those responsible for carrying it out.

 

At Trio Law Offices, we assist clients with wills, estate planning, powers of attorney, probate matters, and trust planning. We take the time to understand your goals and help create an estate plan that provides clarity and protection for the people who matter most.

 

If it has been several years since your will was reviewed, or if your family circumstances have changed, now may be a good time to revisit your estate plan. Thoughtful planning today can help provide confidence and peace of mind for your loved ones in the future.