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

Graduated Rate Estate vs Ordinary Trust Tax in Ontario

See how an Ontario estate taxed as a graduated rate estate differs from an ordinary trust, what the 36-month limit means, and what T3 filing involves.

Wills & Estates4 min readTSLBy the Treadstone Law Team · OntarioUpdated November 1, 2026
← All articles
Key takeaways
  • A graduated rate estate can only be a graduated rate estate for up to 36 months after the death.
  • Most trusts are taxed at the top personal rate, but graduated rate estates and qualified disability trusts are excluded from that rule.
  • An estate must designate itself as a graduated rate estate on its first T3 return.

If you are the executor of an Ontario estate, income often keeps arriving after the death: interest, dividends, rent or gains on investments. How that income is taxed depends heavily on whether the estate qualifies as a graduated rate estate.

This article explains the 36-month idea in plain words, how it compares with an ordinary trust, and what to watch for with T3 returns. Tax rates change every year, so confirm current figures with an accountant.

Testamentary and living trusts: the starting point

For tax purposes, a testamentary trust is a trust or estate generally created on and because of a person's death. An inter vivos (living) trust is any trust that is not a testamentary trust.

An estate you administer is therefore generally a testamentary trust for tax purposes. A trust set up in the will to hold property for a spouse or child is also testamentary. Which tax treatment applies is where the graduated rate estate rules come in.

What a graduated rate estate is

A graduated rate estate (GRE) is the estate that arises on an individual's death. It can only be a GRE for up to 36 months after the death.

The deemed year-end is easy to miss. When the 36 months end, the estate has a tax year-end on that day, so plan for a return covering that period.

How this compares with an ordinary trust

Under Income Tax Act s. 122(1), a trust's taxable income is generally taxed at the highest individual percentage, the top personal rate. Graduated rate estates and qualified disability trusts are excluded from that rule.

TypeTax treatment of income
Ordinary trustGenerally taxed at the top personal rate
Graduated rate estateNot taxed at the flat top rate; limited to 36 months
Qualified disability trustNot taxed at the flat top rate; needs a joint election on Form T3QDT

Put simply, the first 36 months give the estate access to graduated rates, like an individual. After that, income left in the estate is generally taxed at the top rate. That is one reason executors are often encouraged to wrap up an estate within a reasonable time, though other factors also matter.

Qualified disability trusts and other points to know

A testamentary trust that arose on a death can also be taxed at graduated rates as a qualified disability trust (QDT). It must jointly elect with one or more beneficiaries on Form T3QDT and meet the other conditions. Whether a trust qualifies depends on its facts, so get tax advice.

Trusts also face a 21-year rule. Generally, a trust is deemed to dispose of its capital property at fair market value every 21 years. Spousal, alter ego and joint partner trusts have a different first date, tied to the beneficiary spouse's death or the later of the two deaths.

T3 returns and next steps

A trust must file a T3 return if it is a Canadian-resident express trust that is not a listed trust. Other trusts must file only if they meet conditions such as having tax payable or being asked to file. Trusts that existed for less than three months, or that held assets worth no more than $50,000 throughout the year, are among the listed trusts generally exempt from filing, though the list has been expanded and the current wording should be checked. A filing trust generally must also report beneficial ownership information on Schedule 15.

A T3 return is due no later than 90 days after the trust's tax year-end. The late-filing penalty is 5% of the unpaid tax, plus 1% of the unpaid tax for each full month the return is late, up to 12 months. Where no tax is owing, filing late costs $25 a day, with a minimum of $100 and a maximum of $2,500.

Frequently asked questions

How long can an estate be a graduated rate estate?

An estate can only be a GRE for up to 36 months after the death. It has a deemed tax year-end on the day it stops being a GRE.

Can an estate have more than one GRE?

No. There can be only one graduated rate estate for a deceased individual.

How is the estate's GRE status claimed?

The estate must designate itself as a GRE on its first T3 return. It must also report the deceased's Social Insurance Number on its returns during the 36-month period.

What happens to income taxed after the 36 months?

Once GRE status ends, a trust's taxable income is generally taxed at the top personal rate unless another exception such as a qualified disability trust applies. An accountant can confirm the current rates and your options.

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 →