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Find a Lawyer » Canada Legal Guides » Ontario Legal Guides » Wills & Estate Planning Ontario » Probate & Trust Administration Ontario » Can an Ontario Trustee Invest Estate Funds in the Stock Market?

Can an Ontario Trustee Invest Estate Funds in the Stock Market?

15 Jun 2026 6 min read No comments Probate & Trust Administration Ontario
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In Ontario, an executor or trustee can legally invest estate funds in the stock market, provided they strictly adhere to the “prudent investor rule” under the Trustee Act. However, if you make reckless, high-volatility investments and lose the estate’s money, the beneficiaries can sue you to repay those capital losses out of your own pocket.

Being named as an executor or trustee of an estate is a significant honour, but it carries heavy financial responsibilities. When a loved one passes away in cities like Toronto, Ottawa, or Mississauga, their estate may be tied up in the probate process for months or even years. During this waiting period, or if you are managing a long-term trust for a minor child, you might look at a large sum of cash sitting in an estate bank account and wonder if you should invest it in the stock market to earn a better return.

The law in Ontario provides specific guidelines for how estate money must be handled. 📍 According to the provincial Trustee Act, you are not strictly limited to low-interest savings accounts or Guaranteed Investment Certificates (GICs). You are legally permitted to invest in stocks, bonds, and mutual funds, but you are bound by a strict standard of care. By May 2026, the courts continue to enforce the “prudent investor rule,” meaning you must manage the estate’s money with the same care, caution, and skill that a prudent person would exercise when investing on behalf of someone else. If you gamble on risky stocks and fail, the personal financial consequences can be devastating.

Step-by-Step Process for Investing Estate Funds in Ontario

If you are managing an estate in Hamilton, London, or Brampton and decide that investing is necessary, you cannot simply open a brokerage account and start day-trading. You must follow a methodical, legally defensible process to protect both the beneficiaries’ inheritance and your own personal assets.

Step 1: Read the Will for Specific Investment Instructions

Your very first step is to read the Last Will and Testament or the Trust Deed carefully. 📝 The Will is your ultimate rulebook. Sometimes, a testator will include specific clauses that explicitly forbid stock market investments, demanding that funds only be held in government bonds. Conversely, the Will might grant you “unfettered discretion” to invest however you see fit. The instructions in the Will always override the default rules of the Trustee Act.

Step 2: Determine the Timeline of the Estate

You must assess how long you actually need to hold the money. If you are simply waiting for the Superior Court of Justice to issue the Certificate of Appointment of Estate Trustee (probate) so you can distribute the funds next month, investing in volatile stocks is highly imprudent. However, if you are managing a trust fund for a five-year-old child that will not be paid out until they turn 25, keeping the money in a chequing account where inflation erodes its value is equally irresponsible.

Step 3: Develop a Formal Investment Plan

Under the Ontario Trustee Act, you must consider the overall context of the estate when making investment decisions. 💰 You should formally document your investment strategy, considering factors like the expected economic conditions, the tax consequences of the investments (capital gains vs. dividends), and the estate’s need for liquidity to pay final taxes to the Canada Revenue Agency (CRA).

Step 4: Mandate Portfolio Diversification

The law explicitly requires trustees to diversify the investments to an extent that is appropriate for the estate. Putting all the estate’s cash into a single tech stock or a highly volatile sector is a massive breach of your fiduciary duty. A prudent approach generally involves a balanced portfolio of diversified mutual funds, blue-chip stocks, and fixed-income assets.

Step 5: Delegate to a Professional Advisor

You do not have to be a financial expert to be a good trustee. 🤝 The Trustee Act allows you to delegate investment decisions to a qualified financial advisor or portfolio manager. You must hire a registered professional in Ontario, draft a written agency agreement detailing the investment strategy, and regularly monitor their performance. Doing this significantly shields you from personal liability if the market unexpectedly downturns.

Step 6: Maintain Flawless Records for the Passing of Accounts

Every penny that flows in and out of the investment account must be tracked. When it is time to distribute the estate, the beneficiaries (or the court) may demand a “Passing of Accounts.” If the stock market dropped and the portfolio lost money, your meticulous records proving that you followed professional advice and the prudent investor rule will be your primary defence against personal liability.

How Much Does it Cost in Ontario?

Managing and investing estate funds involves various professional fees, which are generally paid out of the estate itself, not from your personal pocket.

FeatureEstimated Cost (CAD)Details
Financial Advisor Fees1% to 2% annuallyPaid from the estate portfolio based on Total Assets Under Management (AUM).
Estate Lawyer Consultation$350 – $600/hrCrucial for interpreting the investment powers granted in the Will.
Formal Passing of Accounts$3,000 – $10,000+Court costs and legal fees if beneficiaries demand a formal audit of your investments.
Personal Liability RiskUnlimitedIf you breach your duty, you may have to repay 100% of the lost capital from your own savings.

How Long Does the Process Take?

The timeline for investing estate funds depends entirely on the purpose of the trust and the complexity of the estate administration. ⌖ Short-term estates require different strategies than long-term trusts.

  • The Executor’s Year: Generally, an executor has one year from the date of death to gather assets, pay debts, and distribute the estate. Short-term investments (like cashable GICs) are usually best here.
  • Long-Term Trusts: If the Will creates a trust for a minor, the investment timeline could span 10 to 20 years, requiring a balanced, growth-oriented stock portfolio.
  • CRA Clearance: You must usually wait 4 to 8 months for the CRA to issue a Clearance Certificate before you can safely liquidate investments and distribute the final funds.

Frequently Asked Questions (FAQ)

Can I invest estate funds in cryptocurrency?

Generally, no. Cryptocurrency is highly volatile and speculative. Unless the Will explicitly grants you the power to invest in crypto, doing so would likely be considered a severe breach of the prudent investor rule in Ontario, opening you up to massive personal liability.

Do I need the beneficiaries’ permission to buy stocks?

Legally, no. The executor has the authority to manage the estate. However, if all beneficiaries are capable adults, it is highly recommended to communicate your investment plan and seek their written consent to avoid any future lawsuits over market losses.

What if the stock market crashes while I am executor?

If the overall market crashes, you are not automatically personally liable for the losses. The court evaluates your actions based on whether your initial investment strategy was prudent and diversified, not on unpredictable macroeconomic events.

Can I use my personal financial advisor for the estate?

Yes, you can hire your personal advisor, provided they are properly registered in Ontario and charge reasonable market rates. However, you must avoid any conflict of interest, such as receiving personal kickbacks for bringing the estate’s business to them.

What happens if I leave the money in a chequing account for 10 years?

Failing to invest can also be a breach of fiduciary duty. If you are managing a long-term trust and leave the funds in a zero-interest account, the beneficiaries could sue you for the “lost opportunity” and inflation erosion of their inheritance.

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