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Final T1 Return for Someone Who Died in Ontario: Deadlines

Find the filing deadline for a deceased person's final T1 in Ontario, what income to include, optional returns and the penalties for filing late.

Wills & Estates5 min readTSLBy the Treadstone Law Team · OntarioUpdated November 6, 2026
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Key takeaways
  • A final T1 return must be filed for every person who dies.
  • The deadline is April 30 for deaths January 1 to October 31, or six months after death for deaths November 1 to December 31.
  • Optional returns can lower the total tax in some situations.

When someone dies, their last personal tax return, often called the terminal or final return, still has to be filed. The legal representative, usually the executor named in the will, is the person who deals with CRA for the estate.

This article explains the deadlines, what goes on the return, which optional returns may help, and what happens if you file late. The right answer for a given estate depends on the facts, so it also flags when to get help.

Who files and what the final return covers

A final T1 Income Tax and Benefit Return must be filed for every person who dies. It reports income and property gains up to the date of death.

The legal representative is usually the executor named in the will, and balances owing to CRA are paid out of the estate's assets. To deal with CRA, the representative sends a copy of the death certificate or a funeral director's statement of death, and a complete copy of the will naming the executor. If there is no will or executor, Form RC552, Register as Representative for a Deceased Person, is used.

Filing deadlines

Date of deathReturn and balance owing due
January 1 to October 31April 30 of the year after death
November 1 to December 316 months after the death, on the same calendar day
January 1 to December 15, with a business run by the deceased or a cohabiting spouse or common-law partnerJune 15 of the year after death
December 16 to 31, with such a business6 months after the death

The June 15 date is only a filing date. Any balance owing must still be paid by the regular payment due date, and the later filing date does not apply if the business's expenditures were mainly for tax shelter investments.

If the person died before filing the previous year's return, that return is due 6 months after the date of death, or the normal due date if later. A surviving spouse or common-law partner's own return is due on the later of their normal due date and 6 months after the death, but any balance owing must still be paid by April 30 to avoid interest.

What income to include

CRA treats the deceased as having sold all their property just before death, even if nothing was sold. That includes real estate, investments and personal belongings. The deemed proceeds are fair market value. Only half of a capital gain is taxable.

Rental or business buildings can trigger recapture of capital cost allowance or a terminal loss. Because these rules interact, an accountant is often worth consulting on larger estates.

Optional returns that may reduce tax

Filing optional returns can lower total tax because certain credits and deductions can be claimed more than once or split between returns, and each return starts again at the lowest tax brackets. The main ones are:

Late filing and what to do next

The late-filing penalty is 5% of any balance owing, plus 1% of the balance for each full month the return is late, up to 12 months. CRA also charges compound daily interest on unpaid amounts from the day after the due date.

Frequently asked questions

What is the deadline for a final return if death was in March?

For a death between January 1 and October 31, the final return and any balance owing are due April 30 of the year after the death. If the deceased or a cohabiting spouse or common-law partner ran a business, the filing date is June 15, but payment is still due on the regular date, and the later filing date does not apply if the business's expenditures were mainly for tax shelter investments.

What if the person died in December?

For a death between November 1 and December 31, the return and balance are due 6 months after the death, on the same calendar day. If the deceased or a cohabiting spouse or common-law partner ran a business, a death from December 1 to December 15 gives a filing date of June 15 of the year after death, and a death from December 16 to 31 gives 6 months after the death. Any balance owing must still be paid by the regular payment due date.

Do I have to pay the deceased's tax myself?

Balances owing to CRA are paid out of the estate's assets. A representative who distributes property without a clearance certificate can become personally liable for unpaid amounts up to the value distributed.

What happens if the return is filed late?

The penalty is 5% of the balance owing plus 1% for each full month late, up to 12 months, and interest is charged on unpaid amounts.

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.

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