Canadian Family Trusts: Uses, Rules, and U.S. Complications
What a discretionary family trust does for a business family, the attribution and split-income rules that limit it, the 21-year clock, and what changes when a beneficiary or trustee is a U.S. person.
Reviewed by the Fairlight Accounting cross-border tax team — U.S. & Canadian Tax Desks
A Canadian family trust is a discretionary trust that holds assets — typically family business shares — for a class of beneficiaries, with trustees deciding who receives income or capital each year. It serves estate freezes, multiplies the capital gains exemption, and controls succession; attribution, the tax on split income, and a 21-year deemed disposition limit it.
On this page
What does it do for a business family?
| Use | How it works |
|---|---|
| Estate freeze | The founder exchanges common shares for fixed-value preferred shares; the trust subscribes for new common shares, so future growth accrues to the next generation |
| Multiplying the capital gains exemption | On a sale of qualifying shares, gain allocated to several beneficiaries can use each one's lifetime exemption |
| Income splitting | Dividends allocated to lower-income adult beneficiaries — now heavily restricted by the tax on split income |
| Control and protection | Trustees decide distributions; assets stay out of beneficiaries' hands and, in some cases, away from their creditors or spouses |
| Succession | Shares pass to the chosen children without probate and without a sale |
What limits it?
- Attribution. Income from property transferred by a parent for the benefit of a minor child or a spouse is taxed back to the transferor; a trust funded with a nominal gift and a prescribed-rate loan avoids this only if structured carefully.
- Tax on split income. Since 2018, dividends and certain other amounts from a related business allocated to family members are taxed at the top rate unless an exclusion applies — the beneficiary is 18 or older and actively engaged in the business on a regular, continuous and substantial basis (an average of 20 hours a week qualifies) in the year or any five prior years, or is 25 or older and either owns excluded shares directly or receives a reasonable return. Shares held by the trust are not the beneficiary's excluded shares.
- Top-rate taxation of retained income. Income not allocated to beneficiaries is taxed in the trust at the highest marginal rate.
- The 21-year rule. Every 21 years the trust is deemed to dispose of its capital property at fair market value; assets are usually rolled out to Canadian-resident beneficiaries before then.
- Reporting. An annual T3 return — required for an express trust resident in Canada even with no income — with Schedule 15 beneficial ownership information on every settlor, trustee, beneficiary, and controlling person such as a protector. Bare trusts were excused for 2024 and 2025 and some must file from 2026, but a discretionary family trust is not a bare trust.
What changes when the family crosses the border?
- A U.S.-person beneficiary is a beneficiary of a foreign trust for U.S. purposes — a Canadian trust is already foreign to the IRS: distributions trigger Form 3520, accumulated income faces the throwback tax, and holding the business shares can create passive foreign investment company or controlled foreign corporation issues.
- A U.S.-resident trustee can shift the trust's residence under central management and control, with a Canadian deemed disposition and new U.S. filing obligations.
- Rolling assets out to a non-resident beneficiary on the 21-year anniversary is not tax-deferred; the trust pays tax on the gain.
- U.S. estate and gift tax on the settlor's transfers if the settlor is a U.S. person.
Frequently asked questions
Is a Canadian family trust the same as a U.S. revocable living trust?
No. A revocable living trust is a probate-avoidance tool that is ignored for U.S. income tax; a Canadian family trust is a separate taxpayer with its own return and rate.
Can a family trust hold the family home?
It can, but the principal residence exemption through a trust is restricted and the structure rarely makes sense for a home alone.
What does it cost to run?
Annual T3 returns, trustee resolutions, and legal and accounting fees; the structure pays for itself mainly where there is a business or a sale.
Can a trust be unwound?
Yes, by distributing the assets to Canadian-resident beneficiaries on a tax-deferred basis, which is how many trusts end before year 21.
Official sources
The CRA explains: “Generally, all trusts that are required to file a T3 return, other than listed trusts, must include specified information about each reportable entity of the trust (beneficial ownership information), as outlined on Schedule 15, with their T3 return.” — Canada Revenue Agency, Who should file - Filing a trust’s T3 return, https://www.canada.ca/en/revenue-agency/services/tax/trust-administrators/t3-return/filing-trust-return/who-should-file.html
The CRA explains: “The Proposals will apply to the amount received by Child 1 from the Family Trust. The amount received by Child 1 will be split income and subject to tax at the top marginal rate.” — Canada Revenue Agency, Guidance on the application of the split income rules for adults, https://www.canada.ca/en/revenue-agency/programs/about-canada-revenue-agency-cra/federal-government-budgets/income-sprinkling/guidance-split-income-rules-adults.html
Next step
Fairlight Accounting handles U.S. domestic, cross-border (U.S.–Canada), and international tax returns, plus bookkeeping, payroll, and CFO advisory. Our Canadian Tax Desk reviews trust deeds and beneficiary lists for cross-border exposure before distributions are made. See pricing or book a free fit call.
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