Graduated Rate Estates and the Loss Carryback

When someone dies, they are deemed to have disposed of their capital property at fair market value immediately before death. For an incorporated professional, that usually means the shares of the corporation—often the single largest number on the terminal return, and a tax bill on a gain nobody actually received in cash.

The main tool for fixing this is the loss carryback under subsection 164(6) of the Income Tax Act. It lets the estate’s losses be treated as the deceased’s losses in the year of death, which is what stops the same value being taxed twice.

It is only available to a graduated rate estate. And as of March 2026, the deadline for using it is materially longer than it used to be.

What a graduated rate estate actually is

A graduated rate estate (GRE) is the estate that arose on and as a consequence of an individual’s death, where five conditions are met under subsection 248(1) of the Income Tax Act:

1. No more than 36 months have passed since the date of death.
2. The estate is at that time a testamentary trust.
3. The estate designates itself as the GRE in its T3 return for its first taxation year.
4. The deceased’s social insurance number is included in that return and each one after it.
5. No other estate of that individual has been designated as the GRE.

That designation point does most of the damage in practice. The designation is a box on a return. If the first T3 is filed without it, the status is not available, and neither is anything that depends on it.

However, there is a key legislative exception: under paragraph 150(1.2)(j) of the Income Tax Act, an estate that would be a GRE if it had properly designated itself still qualifies for the exemption from filing complex beneficial ownership reports (Schedule 15). While this does not rescue the graduated tax rates or the loss carryback, it does spare the estate from onerous annual reporting requirements.

There is only one graduated rate estate per deceased person. In Ontario, where multiple wills are commonly used to keep private company shares out of probate, that is worth confirming with the estate lawyer early rather than discovering at filing time.res out of probate, that is worth confirming with the estate lawyer early rather than discovering at filing time.

What the designation is worth

Graduated rates. A graduated rate estate is taxed at the same graduated rates as an individual for up to 36 months. Every other trust pays the top marginal rate on the first dollar.

A year end you choose. A graduated rate estate can select a non-calendar taxation year, up to twelve months long. Other estates and trusts are locked to December 31. This is a planning tool, not a formality it controls when income falls and when the clock on other deadlines runs out.

Charitable donation flexibility. Donations made by a graduated rate estate can be allocated with far more latitude than donations by other estates, including against the deceased’s terminal return. Where there is a significant bequest, this is often where the largest single saving sits.

The loss carryback. The one that matters most for corporate estates, and the one that changed.

The problem the loss carryback solves

Take an incorporated professional who dies owning shares of their corporation.

On death, those shares are deemed disposed of at fair market value. A capital gain is reported on the terminal return, and tax is paid on it.

The estate now owns shares with a cost base equal to that fair market value. To get the money out, the corporation redeems them and the redemption produces a deemed dividend, taxable again. The same underlying value has now been taxed twice, and in some structures three times.

Note on Capital Gains in 2026: While the 2024 Federal Budget proposed raising the capital gains inclusion rate from one-half to two-thirds, this proposed increase was officially cancelled on March 21, 2025. Consequently, in 2026, the inclusion rate remains at a flat 50% for individuals and estates.

The redemption also produces a capital loss in the estate, because the proceeds are reduced by the deemed dividend. That loss is the fix. Subsection 164(6) lets the executor elect to treat it as a loss of the deceased in the year of death, offsetting the gain on the terminal return.

Without graduated rate estate status, the election is not available and the loss sits in the estate, where it is worth much less or nothing at all.

What changed in March 2026

Bill C-15, the Budget Implementation Act, 2025, No. 1, received Royal Assent on March 26, 2026. Two changes to subsection 164(6) came with it.

The window went from one taxation year to three. Previously the losses had to be realized in the estate’s first taxation year. That is a hard timeline it means valuing the corporation, deciding between a redemption and a pipeline, and executing, all inside twelve months of a death. The amendment extends it to losses realized in any of the estate’s first three taxation years.

The filing mechanics were simplified. The old process required an amended terminal return. The amendment replaces that with a prescribed form and manner. As at the time of writing there is no prescribed form yet, and the CRA’s stated approach is a Form T1-ADJ together with a letter setting out the election and the supporting detail.

The amendments apply to individuals who die on or after August 12, 2024. For an earlier death, the one-year rule still governs which matters if you are picking up an estate file that has been sitting.

Three taxation years is not three years

This is the part to be careful about.

An estate’s first taxation year runs from the date of death to whatever year-end the executor selects, up to twelve months. If a shorter first year is chosen—and there are sometimes good reasons to choose one—then three taxation years can end well before the 36-month graduated rate estate window closes.

The two clocks are different. They start at the same moment, and only one of them is fixed. Choosing the first year-end is therefore not an administrative decision. It sets the deadline for the most valuable election available to the estate.

Where these files go wrong

The designation is missed on the first T3. Everything above depends on it. This is the single most common failure, and it is usually not a judgment error—it is a return prepared by someone treating the estate as a compliance chore.

The estate is allowed to drift. Nothing forces an executor to act quickly, and grief, family dynamics, and probate delays all push the other way. The tax deadlines run regardless.

A December 31 year-end is adopted by default. Frequently the worst available choice, and almost never a considered one.

The corporation is left unexamined. Redemption and pipeline planning are not interchangeable; they have different risks and different timelines, and the decision needs a valuation before it can be made properly.

Assets are distributed before a clearance certificate is issued. An executor who distributes before clearance can be personally liable for the unpaid tax. This one is not recoverable after the fact.

What to do in the first six months

1. Get the corporation valued as at the date of death. Everything downstream depends on this number.
2. Decide the estate’s first year end deliberately, with the three-taxation-year deadline in mind.
3. Confirm with the estate lawyer that there is one estate and one graduated rate estate designation.
4. Model the redemption route against the pipeline route before committing to either.
5. Make the designation on the first T3. Do not assume it happened.

The additional two years the amendment provides are genuinely useful. They are not a reason to start later.

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Related

• Estate and trust tax administration
• Tax planning for professional corporations
• Do you actually need a holding company?

This article is general information, current as at August 11, 2026. It isn’t advice on your situation, and reading it doesn’t create a professional relationship. Tax rules change and the right answer depends on facts specific to you. Before you act on anything here, talk to a CPA about your own circumstances.