Family Trusts for Business Owners: Uses and TOSI Caveats

A family trust is one of the most flexible tools available to an incorporated business owner, and one of the most misunderstood. In its classic form, the trust holds the shares of the family company for the benefit of a defined group, typically the owner, a spouse, children, and sometimes a holding company. That structure can give real advantages: flexibility over who receives dividends, the ability to multiply the Lifetime Capital Gains Exemption on a sale, and a clean vehicle for passing future growth to the next generation. But the rules changed significantly with the introduction of the tax-on-split-income regime, and the income-splitting reputation the family trust once enjoyed is now largely out of date.

This article is for owners and professionals in Ottawa and across Ontario considering a family trust, or wondering whether the one they have still earns its cost. It explains what the structure does, the benefits that survive, the TOSI caveats that limit it, and the ongoing obligations that come with it. It is an explanation of how to think about the decision, not advice; a family trust must be built and maintained with your lawyer and accountant.

What a family trust does

A family trust separates control from benefit. The trustees, often the owner and a trusted adviser, control the shares and decide how and when to distribute income or capital. The beneficiaries, the family members named or described in the trust deed, are those who can benefit. Because distributions are usually discretionary, the trustees choose each year who receives what, within the limits of the tax rules. For the mechanics of trusts generally, see our overview of trusts explained in Canada.

The trust is commonly created as part of an estate freeze, where the owner locks in the current value of their shares and the trust subscribes for new growth shares, so future appreciation accrues to the family rather than the owner. That is the subject of estate freeze explained, and it remains one of the strongest reasons to use a family trust.

The benefits that still hold

Three uses remain genuinely valuable.

• Multiplying the Lifetime Capital Gains Exemption. On a sale of qualifying shares, each adult beneficiary of the trust may be able to claim their own exemption, potentially sheltering a far larger total gain than the owner could alone. This is subject to the eligibility tests in the Lifetime Capital Gains Exemption and must be arranged well ahead.
• Holding future growth. After a freeze, the trust holds the growth shares, giving flexibility over which children eventually receive them and supporting succession without committing ownership prematurely.
• Flexibility and protection. Discretionary distributions let trustees respond to family circumstances, and shares held in trust can offer a degree of creditor protection and a smoother path through succession.

None of these depends on routine income splitting, which is why the trust retains its place in planning despite the TOSI rules.

The TOSI caveats

The tax-on-split-income rules are the reason old advice about family trusts should be treated with caution. TOSI applies the top marginal rate to most dividends and certain other income paid to family members from a private corporation, including through a trust, unless the recipient meets a specific exclusion. The casual practice of sprinkling dividends to a spouse or adult children to use their lower brackets no longer works in most cases.

The main exclusions include a spouse of an owner who is 65 or older, a family member who works in the business an average of at least 20 hours a week (an excluded business), a recipient who owns a sufficient stake of a non-professional, non-service company (excluded shares, generally not available for a trust-held interest), and amounts that are reasonable returns for genuine contributions. The tests are detailed and interact, which is why our note on income splitting strategies in Canada stresses confirming any arrangement with your accountant before relying on it.

The table below summarises the position at a high level. It is illustrative of the rules, not advice.

Objective	Status under current rules	Caveat
Routine dividend splitting to family	Largely blocked by TOSI	Top-rate tax unless an exclusion applies
Dividends to a spouse 65+	Often available	Owner must meet the age condition
Income to family working 20+ hrs/week	Available (excluded business)	Hours must be genuine and documented
Multiplying the LCGE on a sale	Available	Shares must qualify; arranged in advance
Holding growth after a freeze	Available	21-year rule and costs apply

The obligations that come with it

A family trust is not a set-and-forget structure. Two realities deserve attention. First, the 21-year deemed disposition treats the trust as if it sold its capital property roughly every 21 years, which can trigger tax on accrued gains in the company shares. Trustees typically plan around the date, often by rolling shares out to beneficiaries at the trust’s cost base beforehand. Second, a trust carries ongoing cost and duty: annual tax filings, trustee record-keeping, and professional fees. Enhanced trust reporting rules have also increased the disclosure required. These are manageable but real, and they mean a trust should solve a problem large enough to justify them.

Setting one up correctly

A family trust works only if it is established and administered properly, and small missteps can undo the intended benefits. The trust must be genuinely settled with an arm’s-length property contribution, the trustees must actually exercise their discretion rather than acting on the owner’s instructions alone, and distributions must be documented. The attribution rules can tax income back to the person who funded the trust if the funding is done incorrectly, so the initial structure matters. These are not reasons to avoid a trust, but they are reasons to have one drafted by a lawyer experienced in this area and maintained with your accountant, rather than copied from a template. A trust that looks right on paper but is run casually invites challenge.

When a trust is not the answer

It is worth being candid that a family trust is not for every owner. If your company is young, your retained earnings are modest, or you intend to draw out most of your profit each year, the cost and administrative burden of a trust will likely outweigh its benefits. Similarly, if your main goal was simple dividend splitting, the TOSI rules may mean a trust no longer achieves what you hoped. In those cases, simpler tools, a sound compensation strategy in how to pay yourself from a corporation, good use of personal registered accounts, and a clear will, may serve you better. The discipline is to let the problem justify the structure, not the reverse.

Where it fits in the plan

A family trust is a succession and tax-structuring tool, not an income-splitting shortcut. For the right owner, one with meaningful company value, a plan to pass growth to the next generation, and an eventual sale that could use multiple exemptions, it can be a cornerstone of the plan. For a newer or smaller company, the cost and complexity may outweigh the benefit. The decision belongs inside your broader business-owner planning and estate planning, coordinated with the holding-company and insurance decisions in holding company benefits.

Next step

A family trust can still do valuable work for a business owner, provided it is used for the benefits that survived the TOSI rules and maintained properly over its life. If you would like to understand whether a family trust fits your structure, or whether an existing one still earns its keep, book a private consultation with Hayes Wealth Partners. We will explain the options in plain terms and coordinate with your accountant and lawyer to confirm the tax and set it up correctly.