- Most trusts pay tax on their taxable income at the highest individual rate, with graduated rate estates and qualified disability trusts as exceptions.
- Many trusts are treated as selling their capital property at fair market value every 21 years, even if nothing is actually sold.
- A trust that must file a T3 return generally has 90 days after its tax year-end to do so, and late filing can cost money.
If you are a trustee or you are thinking of setting up a trust, one of the first questions is how the trust itself is taxed. A trust is not taxed like a person, and the rules can surprise people who expect the same brackets they pay personally.
This article explains the main federal tax rules that apply to trusts in Ontario: the type of trust, the top-rate rule, the deemed disposition every 21 years, and T3 filing. Your own situation may turn on the trust document, so treat this as a map and not a substitute for advice.
Testamentary and inter vivos trusts
For tax purposes, a testamentary trust is generally a trust or estate created on and because of a person's death. An inter vivos, or living, trust is any trust that is not a testamentary trust.
The label matters because the tax treatment differs, and a trustee needs to know which kind they are dealing with before doing anything else.
The top-rate rule and its exceptions
Under section 122(1) of the Income Tax Act, a trust's taxable income is generally taxed at the highest individual rate. Graduated rate estates and qualified disability trusts are excluded from that rule.
- A graduated rate estate is the estate that arises on a person's death, and it can only be one for up to 36 months after the death.
- There can be only one graduated rate estate for a deceased person. It must designate itself on its first T3 return and report the deceased's Social Insurance Number on its returns during the 36-month period.
- A graduated rate estate has a deemed tax year-end on the day it stops being one.
- A testamentary trust that arose on a death can also be taxed at graduated rates as a qualified disability trust, if it jointly elects with one or more beneficiaries on Form T3QDT and meets the other conditions.
The 21-year rule
Generally, a trust is deemed to dispose of its capital property at fair market value every 21 years. This is a deemed sale for tax purposes, so tax may arise even though no one actually sold anything.
There is an exception for spousal, alter ego and joint partner trusts. For these, the first deemed disposition happens on the day the beneficiary spouse dies, or on the later of the two deaths, instead of on the usual 21-year date.
Planning for the 21-year date is a common reason to speak with an accountant well before it arrives.
T3 returns, deadlines and penalties
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.
Listed trusts are generally exempt from filing, and examples include trusts that existed for less than three months or that held assets worth no more than $50,000 throughout the year. A trust that must file generally must also report beneficial ownership information on Schedule 15.
| Situation | Consequence |
|---|---|
| T3 return filed late with tax owing | 5% of the unpaid tax, plus 1% for each full month late, up to 12 months |
| T3 return filed late with no tax owing | $25 a day, with a minimum of $100 and a maximum of $2,500 |
| Gross negligence or knowingly false statements (non-listed trust) | The greater of $2,500 and 5% of the highest fair market value of the trust's property |
A T3 return is due no later than 90 days after the trust's tax year-end.
What to do next
- Confirm whether the trust is testamentary or inter vivos.
- Find out whether the trust is a graduated rate estate or could qualify as a qualified disability trust.
- Note the trust's tax year-end and the T3 due date that follows from it.
- Work out when the 21-year date falls, or whether an earlier trigger applies.
- Ask an accountant or lawyer to review the trust document before any filing decision.
Frequently asked questions
Does a trust pay tax at my personal rate?
Generally not. A trust's taxable income is generally taxed at the highest individual rate. Graduated rate estates and qualified disability trusts are excluded from that rule.
How long can an estate be a graduated rate estate?
Only for up to 36 months after the death. It has a deemed tax year-end on the day it stops being one.
Does the 21-year rule mean the trust must sell its property?
No. The trust is deemed to dispose of its capital property at fair market value, which is a tax event and not an actual sale. Whether tax is owing depends on the property and the trust's circumstances.
What happens if a T3 return is filed late?
If tax is owing, the penalty is 5% of the unpaid tax plus 1% for each full month late, up to 12 months. If no tax is owing, late filing costs $25 a day, with a minimum of $100 and a maximum of $2,500.
Sources
- Canada Revenue Agency – Trust types and codes — canada.ca
- Income Tax Act, s. 122 (Justice Laws) — Justice Laws (federal)
- Canada Revenue Agency – Graduated Rate Taxation of Trusts and Estates and Related Rules — canada.ca
- Canada Revenue Agency – Tax year-end and fiscal period — canada.ca
- Income Tax Act, s. 104 (Justice Laws) — Justice Laws (federal)
- CRA – T3 Trust Guide (T4013) — canada.ca
- CRA – Important updates to the trust reporting requirements for the 2025 taxation year — canada.ca
- CRA – Enhanced reporting rules for trusts and bare trusts: FAQ — canada.ca
Links go to official government, court and regulator pages. The law changes — confirm you are reading the current version.
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