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№ 22 Wills & Estates

How Must a Trustee Invest Trust Money in BC? The Prudent Investor Rule

Learn how British Columbia's Trustee Act governs trust investments: the prudent investor standard, delegating to an advisor, loss liability and court relief.

Wills & Estates4 min readTSLBy the Treadstone Law Team · British ColumbiaUpdated November 13, 2026
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Key takeaways
  • A BC trustee may invest in any form of property or security a prudent investor might choose, but not in a way that is inconsistent with the trust.
  • The standard is the care, skill, diligence and judgment of a prudent investor, and a trustee who follows a prudent plan with a reasonable assessment of risk and return is not liable for a loss.
  • A trustee may delegate investment decisions to an agent, but must set the objectives and choose and monitor the agent prudently.

If you are a trustee, you may be holding money for others and wondering what you are allowed to do with it. If you are a beneficiary, you may want to know what you can expect from the person managing it. In British Columbia, the Trustee Act sets out the rules for investing trust property.

This article explains those rules in plain language: what a trustee can invest in, the standard they are held to, when a loss is not their fault, when they can hand decisions to an advisor, and when a court may excuse a mistake.

This article covers the law of British Columbia.

What a trustee may invest in

A trustee may invest trust property in any form of property or security in which a prudent investor might invest. That is a broad permission, so the law does not limit trustees to a short list of approved investments.

There is one important limit. The permission does not authorize investing in a manner that is inconsistent with the trust. The trust document, such as a will that creates a trust, still matters, so read its terms before you decide on a strategy.

The prudent investor standard

When investing trust property, a trustee must exercise the care, skill, diligence and judgment that a prudent investor would exercise. The test is how a careful investor would act, not whether the investments turned out well.

Losses, and how the portfolio is judged

A trustee is not liable for an investment loss if their conduct conformed to a prudent plan or strategy with a reasonable assessment of risk and return. A loss alone does not prove a trustee did something wrong.

Investments are not assessed one by one, and gains may offset losses when damages are calculated. The exception is where dishonesty is involved. For a beneficiary, this means a complaint usually looks at the whole portfolio and the process behind it.

Handing decisions to an advisor or portfolio manager

A trustee may delegate investment authority to an agent, such as an advisor or portfolio manager, to the degree a prudent investor could under ordinary business practice. The trustee does not give up all responsibility. They must set the investment objectives and act prudently in choosing the agent, setting the terms, communicating the objectives and monitoring performance.

A trustee who does this is not liable for the agent's decisions. There is an exception. Delegation is not allowed where the trust requires the trustee to act personally.

StepWhat the trustee must do
Before hiringSet the investment objectives and choose the agent prudently
In the agreementSet the terms and communicate the objectives
AfterwardsMonitor the agent's performance

Court relief and what to do next

The court may relieve a trustee from liability for a breach of trust if the trustee acted honestly and reasonably and ought fairly to be excused. This is a decision for the court, so a trustee should not count on it.

Frequently asked questions

Can a trustee be held liable if an investment loses money?

Not automatically. A trustee is not liable for an investment loss if their conduct conformed to a prudent plan or strategy with a reasonable assessment of risk and return. Investments are also not judged one by one, and gains may offset losses, except where dishonesty is involved.

Can a trustee hire a financial advisor to manage the trust money?

Often yes, to the degree a prudent investor could under ordinary business practice. The trustee must still set the objectives, choose the agent prudently and monitor performance. It is not allowed where the trust requires the trustee to act personally.

Does the prudent investor rule override what the trust document says?

No. A trustee may not invest in a manner inconsistent with the trust. The trust terms and the Trustee Act both matter.

Can a court forgive a trustee who made a mistake?

It may. The court can relieve a trustee from liability for breach of trust if the trustee acted honestly and reasonably and ought fairly to be excused. Whether that applies depends on the facts, so a lawyer can help you assess it.

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. British Columbia 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 lawyer who practises in British Columbia. Reach us at 1-844-900-1070 or send our Team a message.

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