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Co-Trustees Who Disagree: What Can You Do in Ontario?

Trustees deadlocked or one acting alone? Learn how Ontario trust terms, court directions, accounts and removal work when co-trustees disagree.

Wills & Estates4 min readTSLBy the Treadstone Law Team · OntarioUpdated November 6, 2026
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Key takeaways
  • The trust document is the first place to look, and the Trustee Act's investment powers cannot override its terms.
  • A trustee can ask the Superior Court of Justice for advice or direction without starting an action.
  • If a trustee is the real problem, the court can appoint a new trustee, and it can remove an estate trustee.

Being one of several trustees can feel like being in a group project where one person will not answer emails, or another keeps making decisions without telling anyone. When trustees cannot agree, one person's stalling or solo moves can make things hard for everyone involved.

This article explains the main tools Ontario law gives you when co-trustees disagree. It is general information. The right path depends on the trust document and the facts, so a lawyer should confirm it for your situation.

Start with the trust document

How trustees must make decisions, whether they must act together, and whether one can act alone are usually questions answered first by the will or trust document. Read it closely before taking any step. Even the Trustee Act's investment powers do not authorize or require a trustee to act inconsistently with the terms of the trust.

The document may also say who can appoint a replacement trustee, and what compensation a trustee receives. If you cannot tell from the wording what the voting or decision-making rule is, that is a good point to get legal advice before the dispute hardens.

Practical steps before going to court

Many disagreements are about communication rather than law. A calm, written approach often helps, and it also creates a record if the matter later reaches a judge.

If you pay a trust expense out of your own pocket, you may recover the same amount from the trust property, but the court may later disallow the expense. Keep receipts and explain why the expense was needed.

Asking the court for directions

When trustees are genuinely stuck, a trustee may apply to the Superior Court of Justice, without starting an action, for the court's opinion, advice or direction on managing trust property. This can resolve a deadlock without accusing anyone of wrongdoing.

Passing of accounts is another route. A trustee who wants to pass the accounts may file them in the office of the Superior Court of Justice. A person who appears to have a financial interest in an estate may also bring a motion for an order requiring the estate trustee to pass accounts. That puts the trustees' dealings in front of a judge.

When one trustee is the problem

A trustee who dies, stays out of Ontario for more than 12 months, refuses or is unfit to act, or is incapable of acting can be replaced by written appointment. The person named in the trust document appoints. If no one is named, the surviving or continuing trustees do, or the personal representatives of the last surviving trustee. If a sole trustee dies, their personal representatives may exercise the trustee's powers until new trustees are appointed, and a sole or last surviving trustee may also appoint a successor by will.

The Superior Court of Justice can also appoint a new trustee, either replacing or adding to existing ones. For estate trustees (executors), the court can remove them on any ground on which it could remove any other trustee, and appoint someone in their place.

On liability, a court may relieve a trustee from personal liability for a breach of trust if the trustee acted honestly and reasonably and ought fairly to be excused. That relief does not apply to investment losses. For those, the trustee relies on the protection for following an investment plan or strategy that a prudent investor could adopt. A trustee who simply goes along with a co-trustee's risky decision should not assume they are protected.

What to do next

Compensation is a common flashpoint. A trustee is entitled to a fair and reasonable allowance for their care, pains and trouble and the time spent, and a judge of the Superior Court of Justice fixes it. Compensation may be settled even if the estate is not before the court in an action, and a judge may allow it on a passing of accounts. These rules do not apply where the trust document itself fixes the allowance. Agree on how this will be handled early.

Frequently asked questions

Can one co-trustee act alone in Ontario?

It depends on the trust document and the type of decision. Many trust documents require trustees to act together, so acting alone can expose the trustee to challenge. A lawyer can read your document and tell you what applies.

Can I ask a court to decide when trustees are deadlocked?

Yes. A trustee may apply to the Superior Court of Justice, without starting an action, for the court's opinion, advice or direction on managing trust property.

Can a stalling trustee be replaced?

Yes, in some situations. A trustee who refuses or is unfit to act, or is incapable of acting, can be replaced by written appointment. The court can also appoint new trustees, and it can remove an estate trustee.

Can a beneficiary force trustees to show their accounts?

A person who appears to have a financial interest in an estate may bring a motion for an order requiring the estate trustee to pass accounts. Whether this fits your situation is worth confirming with a lawyer.

Sources

Links go to official government, court and regulator pages. The law changes — confirm you are reading the current version.

This article is general information, not legal advice. Reading it does not create a lawyer-client relationship. Ontario laws, tax rates, and government programs change, and how the law applies depends on your specific facts. For advice about your situation, speak with a licensed Ontario lawyer. Treadstone Law is licensed by the Law Society of Ontario — reach us at 1-844-900-1070 or start a file online.

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