Estate Income Tax in Canada — Rates, Returns, and the Pitfalls

A Toronto widower dies in March, leaving a $1.4 million estate that throws off roughly $48,000 of GIC interest, dividends, and rental income during the year his executor is winding things up. Whether the estate pays about $4,000 of tax on that income or roughly $24,000 turns on a single box the executor checks on the first T3 return. That box is the graduated rate estate election. It is the most consequential tax decision in Canadian estate administration, and many family executors do not realize they are making it.

This guide walks through how estate income is taxed in Canada after the date of death — what changed in 2016, how the GRE window works, what the rates look like, what a T3 return actually is, and the section-159 trap that has made more than one executor personally responsible for the deceased's tax debt. For the broader administration sequence, see our pillar on what an executor does in Canada.

The estate is a separate taxpayer #

The moment a person dies, two distinct tax filers come into being. The first is the deceased themselves — they file a final T1 income tax return for the period from January 1 to the date of death.^[6] The second is the estate, a brand-new testamentary trust that holds the deceased's property until it is distributed, and that files its own annual T3 trust return on income earned after the date of death.^[3]

This distinction is what trips up most first-time executors. Bank interest credited the week after death, dividends from a brokerage account in May, rent collected on a property until it is sold — none of this is the deceased's income. It is the estate's income, and the estate is the one that pays the tax. The executor signs the T3 return as the legal representative of the trust.

The same separation applies to capital gains realized after death — when the executor sells the family home or liquidates an investment portfolio above its date-of-death value, the gain belongs to the estate, not to the deceased.

The graduated rate estate window — 36 months #

Before 2016, every testamentary trust enjoyed the same graduated tax brackets as individuals — a tidy planning advantage that some families abused by leaving assets in long-running testamentary trusts for decades. The 2014 federal budget eliminated that, effective January 1, 2016.^[2] Today, almost every testamentary trust pays tax at the top marginal rate from dollar one. The narrow exception is the graduated rate estate.

To qualify as a GRE, three conditions generally have to hold throughout the period:^[1]

• The estate arose on and as a consequence of the individual's death.
• The estate designates itself as the deceased's GRE on its first T3 return (a one-time election made by checking the GRE box and reporting the deceased's social insurance number).
• No more than 36 months have passed since the date of death.

While the estate qualifies, it pays tax at the same graduated rates that apply to individuals — so the first slice of taxable income is at the lowest federal bracket, and the top combined rate only kicks in above the top threshold. On the Toronto widower scenario above, the difference between GRE and non-GRE treatment on $48,000 of income is roughly $20,000 in tax.

The election is not automatic. If the executor files the first T3 without checking the GRE box, the estate is generally treated as a non-GRE testamentary trust from the start and pays the flat top rate. Catching the missed election later is possible by amending the return but adds friction.

When the GRE window closes #

The estate stops being a GRE at the earliest of:^[2]

• 36 months after the date of death.
• The day the estate ceases to exist (all property distributed, all liabilities settled).
• The day the estate fails to meet the GRE conditions (rare in practice).

On that day, there is a deemed year-end. The executor files a final GRE T3 covering up to the deemed year-end, and any continuing trust from that day forward is taxed as a regular testamentary trust — at the flat top combined rate. For estates that are likely to run long (cottage in the residue, business interest being valued and sold, contested litigation), planners often time the major distributions so the largest income hits while GRE status is still in place.

What the rates actually look like #

Federal income tax brackets apply to a GRE the same way they apply to a living individual. For the 2025 tax year, the federal brackets ran roughly: 14.5% on the first ~$57,000 of taxable income (a blended rate, after the lowest bracket was cut from 15% to 14% partway through 2025), 20.5% to ~$114,000, 26% to ~$177,000, 29% to ~$254,000, and 33% above that. Each province layers its own brackets and rates on top. The combined top marginal rate ranges from roughly 47% (Alberta, Saskatchewan) to about 54% (Newfoundland, Nova Scotia, New Brunswick).

A non-GRE testamentary trust pays the top combined rate on every dollar of income — there are no brackets, no basic personal amount, no graduated relief. That is what makes the GRE election so consequential on estates that will retain income for any length of time.

A practical worked example. The estate receives $40,000 of bond interest and $20,000 of dividends in its first year. As a GRE in Ontario, taxable income of roughly $50,000 (after the dividend gross-up and credit) draws combined federal-plus-Ontario tax of about $9,000 — an effective rate near 18%. As a non-GRE, the same income draws combined tax of about $26,000 — an effective rate near 52%. Three observations are worth pulling out — first, the GRE election matters most on estates that earn income (interest-bearing accounts, dividend portfolios, rentals); second, on estates that are distributed within months of death and earn little post-death income, the election makes almost no difference; third, even on a GRE-eligible estate, the executor only benefits if the income stays in the estate rather than flowing out to beneficiaries.

Income retained in the estate vs flowed out #

The T3 form has a mechanism called designations. When the estate earns income in a year and pays it (or makes it payable) to a beneficiary in the same year, the executor can issue the beneficiary a T3 slip designating that income to the beneficiary. The beneficiary then reports the income on their personal T1 and the estate gets a corresponding deduction.^[3]

The strategy choice — retain in the estate or flow out — depends on whose marginal rate is lower. On a GRE in its first year with little other income, the estate may pay less tax than a high-bracket adult beneficiary. On a non-GRE testamentary trust, almost any individual beneficiary pays less than the flat top rate, so flowing income out is usually the right move.

Watch for the rate disparity with adult-child beneficiaries who are already in top brackets. For them, retaining income in the estate during the GRE window is a temporary deferral but rarely a permanent tax saving — the eventual distribution of the cash is not income to them (capital is not income), but income they receive directly is taxed at their full personal rate.

T3 filing mechanics #

The T3 Trust Income Tax and Information Return is the form. The executor files it within 90 days of the trust's tax year-end.^[4] A GRE often picks a non-calendar year-end matched to the date of death — so a death on August 14 gives the estate an August 14 fiscal year-end and a November 12 filing deadline each year. Non-GRE testamentary trusts must use a December 31 calendar year-end with an April 1 filing deadline.

Late filing draws a penalty equal to 5% of the unpaid balance plus 1% per full month late, capped at 12 months — and the CRA's repeated-late-filer penalty doubles those figures.

What goes on the T3:

• All income earned by the estate in the year (interest, dividends, capital gains, rents, business income).
• Designations to beneficiaries who received payable income in the year.
• The clean-up of any income reported on the deceased's final T1 (a one-time choice for income earned in the period between the final pay-day and the date of death, called "rights or things").
• Schedules for capital gains, foreign income, and other specialized items as they apply.

For a more involved discussion of the trust return itself, see T3 trust returns: when the estate must file.

The clearance certificate and section 159 #

Section 159 of the Income Tax Act is the executor's single biggest exposure.^[5] It says that a legal representative who distributes estate property without first obtaining a clearance certificate is personally liable for any unpaid taxes the deceased or the estate owed, up to the value distributed.

The fix is straightforward in concept and tedious in execution. After filing the deceased's final T1 and any T3 returns the estate has filed to date, the executor requests a clearance certificate using form TX19. The CRA reviews the file, confirms that all returns are filed and all assessed amounts are paid, and issues the certificate. Only then does the executor distribute the residue.

The process typically takes 4 to 8 months from request to certificate. That delay is one of the main reasons Canadian estates routinely run 12 to 18 months from death to final distribution.

Skipping the clearance certificate has cost more than one executor their own home. Family executors who distribute "because the will said to" without protecting themselves are the prototypical victims. The protection costs nothing and takes one form.

Common pitfalls #

A handful of mistakes show up over and over in Canadian estate administration:

Missing the GRE election on the first T3. As above — easy to miss, expensive in tax. The first T3 has a check-box; the executor or the accountant has to know it exists.

Treating post-death income as the deceased's income. Bank interest credited the week after death, the last RRSP withdrawal, the dividend that posted to the brokerage account a month later — these belong to the estate (or, for an RRSP with a named successor, to the named recipient). They do not belong on the deceased's final T1.

Failing to file a T3 because "the estate didn't earn much." A T3 is required if the estate has tax payable, made a distribution to a beneficiary, or disposed of capital property — a low threshold. Most estates that hold assets for more than a few weeks will file at least one T3.

Distributing before clearance. The executor's single largest exposure. The clearance certificate exists for a reason. Wait for it.

Forgetting capital gains on the sale of the home. The principal residence exemption ordinarily covers the deceased's principal residence on the date of death. But if the executor holds the home for a year and it appreciates further before sale, the post-death gain is taxable to the estate.

What we focus on at It's Simple Will #

The income-tax mechanics of estate administration are not what most people sign up for when they accept executor duties. We can't take the tax decisions for you — that requires reviewing the specific facts of your estate, and frankly often warrants an accountant or estate-tax lawyer for anything beyond the simplest cases. What we can do is make sure the structural pieces are in place: a will that names a competent executor, beneficiary designations that route registered accounts cleanly, and a Life Discovery Kit that tells your executor where everything is.

The cleaner the estate, the less the income-tax complexity matters — because the assets get out the door faster and the post-death income window is shorter. Build the documents now at app.itssimplewill.ca, and circle back to our executor checklist for the operational sequence the executor will follow when the time comes.