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Setting Up a Trust for Minor Children in Your Ontario Will

11 Jun 2026 5 min read No comments Making a Will & Power of Attorney Ontario
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In Ontario, leaving money directly to a minor means they will receive the entire lump sum at age 18. By establishing a testamentary trust in your Will, you can dictate a later age for inheritance (such as 21, 25, or 30) while allowing a trusted person to manage the funds for their education and care.

As a parent, planning for your family’s future is your top priority. If you pass away without a Will, or if you simply leave your estate to your children without specific instructions, Ontario law dictates that they will receive their full inheritance the moment they turn 18. For many young adults, suddenly receiving a large sum of money can be overwhelming and lead to poor financial decisions. Establishing a testamentary trust ensures your hard-earned wealth is protected and used responsibly.

Whether you live in downtown Toronto, a suburb of Mississauga, or a rural community near Ottawa, the legal framework for protecting minors remains the same. A testamentary trust is simply a trust that is created within your Will and only comes into effect upon your death. It allows you to appoint a “trustee”-someone you deeply trust-to manage the money, pay for your child’s living expenses, and release the funds at ages you believe they will be mature enough to handle them. Generally, working with an Ontario law firm is the best way to ensure these clauses are legally binding and tax-efficient.

Step-by-Step Process for Creating a Testamentary Trust in Ontario

Drafting a trust requires careful thought about your child’s future needs and who is best equipped to handle significant financial responsibilities. The process typically follows these core steps when you sit down with your local lawyer.

Step 1: Choosing Your Trustee

👤 The trustee is the person who will manage the trust funds until your child reaches the specified age. This is a massive responsibility. They will need to file tax returns for the trust, invest the money wisely, and decide when to release funds for things like university tuition or a first car. You can choose a family member, a close friend, or even a professional corporate trustee (like a bank or trust company). It is highly recommended to name an alternate trustee in case your first choice is unable to serve.

Step 2: Defining the Age Milestones and Terms

You have complete control over when your children receive the money. Many Ontario parents choose a staggered approach. For example, your Will might state that your child receives 25% of the capital at age 21, 25% at age 25, and the remaining balance at age 30. In the meantime, you must include a “power of encroachment” clause. This legally permits the trustee to dip into the trust fund before those milestone ages to pay for the child’s education, healthcare, and general maintenance.

Step 3: Drafting and Signing the Will

Once you have made these decisions, your lawyer will draft the testamentary trust clauses into your Will. You must then sign the Will in the physical or virtual presence of two witnesses, in strict accordance with the Succession Law Reform Act. Once signed, the trust lays dormant. It only springs into existence after your passing, meaning you can easily update or change the terms while you are still alive if your family situation changes.

How Much Does it Cost in Ontario?

Securing your children’s financial future is a necessary investment. The costs primarily involve legal drafting and future administration.

  • Law Firm Drafting Fees: A standard Will package for a couple in Ontario, which includes testamentary trust provisions, generally costs between $800 and $1,500 CAD depending on the complexity of your estate.
  • Trustee Compensation: Under Ontario law, trustees are entitled to be paid for their work. Unless your Will states otherwise, they can claim roughly 2.5% of the capital and income received and dispersed by the trust.
  • Ongoing Tax Returns: A testamentary trust is considered a separate taxpayer by the CRA. Annual accounting and tax filing fees for the trust usually cost between $500 and $1,200 CAD per year.

How Long Does the Process Take?

⏱ Creating the trust is a relatively quick process, but its administration can last for decades.

  • Will Preparation: Meeting with a lawyer and drafting your new Will usually takes 2 to 4 weeks from the initial consultation to the final signing.
  • Trust Duration: The trust itself will last from the date of your death until the child reaches the final age specified in your Will (e.g., 25 or 30 years old).
  • Probate Timeline: After your passing, your executor will need to apply for probate (Certificate of Appointment of Estate Trustee), which currently takes 3 to 6 months in many Ontario courts before the trust can be fully funded.

Comparison: Default Inheritance vs. Testamentary Trust

FeatureDefault Ontario Law (No Trust)Testamentary Trust (In Will)
Age of Full InheritanceExactly at 18 years old.Customizable (e.g., 21, 25, 30).
Who Manages the Money?The Accountant of the Superior Court of Justice (if under 18).A Trustee you personally selected.
Access for EducationRequires difficult court applications to release funds.Trustee has flexible power to release funds immediately.

Frequently Asked Questions (FAQ)

Can the guardian of my child also be the trustee?

Yes, it is very common to appoint the same person as both the child’s legal guardian and the trustee of their money. However, some parents prefer to separate these roles to create a system of checks and balances, ensuring one person handles daily care while another oversees the finances.

What happens to the money if my child dies before reaching the trust age?

Your Will should always include a “gift-over” clause. This dictates who receives the remaining trust funds if your child passes away prematurely. Usually, the funds are redirected to your other surviving children, grandchildren, or a named charity.

Does a testamentary trust save taxes?

Historically, testamentary trusts enjoyed graduated tax rates. However, federal laws have changed. Today, testamentary trusts are generally taxed at the highest marginal rate, except for Qualified Disability Trusts (QDTs) for beneficiaries on ODSP. A lawyer can help you navigate these specific tax rules.

Can I change the age of inheritance later?

Absolutely. As long as you have the mental capacity to make a Will, you can update your documents at any time. If you realize your 20-year-old is highly responsible, you can execute a new Will or a Codicil to lower the age of inheritance.

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