The test: income, a disposition, or a payment to a beneficiary
An estate must file a T3 return for a year in which it has tax payable, disposes of capital property, or allocates or distributes income or capital to a beneficiary, and CRA can also simply request one. Those triggers are broad enough that most estates meet at least one in their first year. A bank account earning interest between death and distribution, a house sold six months later, a dividend paid by the company to fund the tax bill, a first cheque to a beneficiary: each of those on its own puts the estate on the filing list.
The situations that genuinely need no T3 are narrow. An estate where the surviving spouse held everything jointly, the registered plans named beneficiaries directly, and nothing else existed, has no property to earn income and often no estate to speak of. An estate that was wound up within weeks of death, before anything was earned or sold, is usually in the same position. Those files still need the deceased's final T1; they just have no second taxpayer to report.
Where an executor is genuinely on the line, file. A T3 with nil tax costs a fraction of what a missed year costs later, and CRA will want the estate's return history clean before it issues the clearance certificate that ends the executor's personal exposure.
Why there is a second return at all
Because death creates a new taxpayer. The deceased's final T1 covers January 1 to the date of death and then closes permanently. Everything the property earns from the day after death belongs to the estate, which the Income Tax Act treats as a trust with its own tax number, its own taxation years and its own return. Families frequently discover this months in, when a T5 slip arrives for an account that is still in the deceased's name and nobody knows which return it belongs on. The date on the slip decides.
Two consequences follow immediately. First, the estate needs a trust account number from CRA before anything can be filed, and requesting it early matters because the number can take weeks to arrive and nothing, including the first return, moves without it. Second, only property that actually passes through the estate lands on the T3. Jointly held assets moving to a survivor by right of survivorship, and registered plans or insurance paid to a named beneficiary, bypass the estate entirely and never appear on its return, even though they may still create tax on the deceased's final return.
The common situations, side by side
Most executor questions land in one of these rows:
| What happened after the death | T3 required? | Why |
|---|---|---|
| Everything passed jointly to the spouse or by beneficiary designation | No | Nothing entered the estate, so there is no trust income to report |
| The estate account earned interest before distribution | Usually yes | Post-death income belongs to the estate, though very small amounts can fall under CRA's filing thresholds |
| The estate sold the house, cottage or a portfolio | Yes | A disposition of capital property by the estate triggers the return on its own |
| The corporation paid a dividend to the estate | Yes | The estate is the shareholder now, and the dividend is its income |
| The estate redeemed the deceased's shares | Yes | This is also the return that carries the first-year loss carryback election |
| The executor paid income or capital to beneficiaries | Yes | Allocations and distributions are filing triggers, and the beneficiaries need slips |
One row deserves separating out, because families conflate them. A trust created by the will, a spousal trust or a trust holding a minor's share, is not the estate. It is a second trust with its own account number and its own T3, and it keeps filing long after the estate is closed.
The first T3 is a planning document, not a compliance chore
The estate's first return carries three decisions that cannot be walked back easily, which is why it should not be the last thing anyone gets to. It is where the estate designates itself a graduated rate estate, the status that gives the estate ordinary tax brackets instead of the top marginal rate for up to 36 months. It is where the executor's chosen first year-end takes effect, anywhere up to twelve months after death, and only a graduated rate estate may use a year-end other than December 31. And it is where the subsection 164(6) loss carryback election is filed, together with an adjustment to the deceased's final return.
That third item is the reason executors of business owners get the first T3 scoped early. Where the estate holds private company shares, the death produced a capital gain with no cash behind it, and the standard repair is a share redemption inside the estate's first taxation year producing a capital loss the estate carries back against that gain. The year-end chosen on the first T3 defines that window. Choose it without knowing the plan and you can close the window before anyone has looked through it, which is exactly the trap described in double taxation on private company shares at death.
The deadline is a straight 90 days after the estate's year-end, for the return and for any balance owing. Beneficiary slips run on the same 90 days, which is the part that catches people: if income is being allocated to beneficiaries, the amounts have to be settled before year-end, not while the return is being typed. Late filing attracts the standard penalty, 5% of the unpaid tax plus 1% for each full month the return is late, to a maximum of twelve months, with interest running underneath it.
An estate holding a business files more than once
Expect a T3 for every year the estate stays open, and expect the estate to stay open longer than the family wants. A business estate rarely resolves inside one year: valuations take time, a redemption or a pipeline plan runs across two or three estate years by design, and CRA's reassessment of the carried-back loss lands well after the return that claimed it. Each of those years is its own T3 with its own 90-day deadline and its own slips.
Three practical points keep those years from becoming expensive. The estate's income is taxed at the estate's rates only to the extent it is retained; income paid or made payable to beneficiaries is deducted and taxed in their hands, so the allocation decision is a real one each year, not a formality. The corporation's own filings, its T2, payroll and HST, carry on untouched by the death and are nobody's afterthought, because the directors carry personal exposure on remittances. And the final T3, the one filed when the estate is wound up, is what CRA wants assessed before it issues a clearance certificate.
What changes the answer
Four facts decide how heavy the T3 side of your file will be:
- How much passed outside the estate. Joint accounts and named beneficiaries can leave an estate with almost nothing to report.
- Whether the estate holds private company shares. If it does, the first T3 carries planning decisions worth far more than the filing costs.
- How long the administration runs. Every extra year is another return, another set of slips, and after 36 months the graduated rates are gone.
- Whether income is distributed or retained. This sets who pays tax on it, at what rate, and whether beneficiary slips are needed at all.
Executors do not need to learn trust taxation; they need one advisor holding the returns, the elections and the deadlines on a single calendar next to the estate lawyer's probate timeline. That is what our post-mortem practice does, and it is the ordinary work of a business estate planning CPA Ontario families call when a company sits in the estate. Start with a free 15-minute discovery call and we will tell you which returns your estate owes and when the first one is due. See how we plan the post-mortem route before the first return is filed.
Source: CRA — T4013 T3 Trust Guide.
