TREADSTONE LAW · ONTARIO · DIGITAL LEGAL SERVICES · EST. MMXXI ·TSL
Licensed by the Law Society of OntarioFlat fees published upfrontWe reply to messages within 1 business daySign in
Home/Articles/Wills & Estates
№ 22 Wills & Estates

Alter Ego Trust vs Joint Partner Trust in Ontario Explained

Compare alter ego and joint partner trusts for people 65 or older in Ontario: who qualifies, how income, tax on death and control differ.

Wills & Estates5 min readTSLBy the Treadstone Law Team · OntarioUpdated November 6, 2026
← All articles
Key takeaways
  • An alter ego trust is a living trust created after 1999 by a settlor aged 65 or older who is entitled to all its income for life.
  • A joint spousal or common-law partner trust is similar, but the settlor and their spouse or partner share the income until the later death.
  • Both avoid the usual 21-year deemed disposition, with the first one happening on a death instead.

If you are 65 or older, you may have heard of an alter ego trust or a joint partner trust as a way to manage your property during life and pass it on afterwards. They are close relatives, and the difference mostly comes down to who is entitled to the income.

This article sets out how the two compare on eligibility, tax, probate and control. Whether either one suits you depends on your family, your assets and your goals, so treat this as background for a conversation with a lawyer and an accountant.

What each trust is

An alter ego trust is a living trust created after 1999 by a settlor who was 65 or older at the time. The settlor must be entitled to all of the trust's income during their lifetime.

A joint spousal or common-law partner trust is also a living trust created after 1999 by a settlor aged 65 or older. The settlor and their spouse or partner must be entitled to all of the trust's income until the later of their deaths.

FeatureAlter ego trustJoint partner trust
SettlorAged 65 or older, trust created after 1999Aged 65 or older, trust created after 1999
Income entitlementSettlor, for lifeSettlor and spouse or partner, until the later death
First deemed dispositionOn a death rather than at 21 yearsOn the later of the two deaths rather than at 21 years

Tax: what is the same and what to watch

Generally, a trust is deemed to dispose of its capital property at fair market value every 21 years. For spousal, alter ego and joint partner trusts, the first deemed disposition happens instead on the day the beneficiary spouse dies, or on the later of the two deaths.

A trust's taxable income is generally taxed at the highest individual rate, with exceptions for graduated rate estates and qualified disability trusts. A trust that is a Canadian-resident express trust and not a listed trust must file a T3 return.

Putting assets into a trust is a transfer, and its tax effects depend on the assets and your circumstances. Get tax advice before you sign anything.

Probate and Estate Administration Tax

Ontario Estate Administration Tax is $15 for each $1,000, or part of $1,000, by which the value of the estate exceeds $50,000, for applications made on or after January 1, 2020. No tax is payable if the estate is worth $50,000 or less, though an Estate Information Return must still be filed.

The tax is based on the deceased's property that must be disclosed, less encumbrances on real property. Assets that pass outside the estate, such as those with a named beneficiary, are excluded.

The key question for a trust is whether you still own the asset beneficially. Ontario includes in the estate value any property the deceased owned that was held in another person's name, and putting legal title in another name does not by itself remove a beneficially owned asset from the tax. A properly set up trust may take assets out of the estate, but how the trust is drafted and how it works in practice matter, so confirm this with a lawyer.

Control, creditors and family concerns

A trustee manages the property under the trust document. Trustees must invest as a prudent investor would and cannot act inconsistently with the terms of the trust. You could be one of the trustees, but this is a choice about who you trust and what happens if you lose capacity, so it should be thought through.

Which one suits you, and what to do next

An alter ego trust is built around one person's lifetime income. A joint partner trust is built around a couple sharing income until the later death. Single people, or those who want sole entitlement, look at the first. Couples who want shared income and a single deemed disposition on the later death look at the second.

Frequently asked questions

Do I have to be 65 to set up an alter ego trust?

Yes. An alter ego trust is a living trust created after 1999 by a settlor who was 65 or older at the time. A joint partner trust has the same age condition.

Does the trust avoid the 21-year rule?

Generally trusts are deemed to dispose of capital property every 21 years. For these trusts the first deemed disposition instead happens on the death of the beneficiary spouse, or on the later of the two deaths.

Do assets in the trust avoid Estate Administration Tax?

Only if the deceased no longer owns the asset beneficially. Ontario counts property the deceased owned that was held in another person's name. A lawyer can review how your trust is drafted.

Does the trust have to file a tax return?

A Canadian-resident express trust that is not a listed trust must file a T3 return. Whether your trust is a listed trust depends on its facts, so confirm with an accountant.

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.

This is a wills & estates question

Start a file online — flat, published fees, reviewed by a licensed lawyer before a dollar is owed.

ContactStart a File →