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How to File Estate Tax Returns in Ontario Step by Step

A step-by-step guide for Ontario estate trustees: registering with CRA, the final T1, optional returns, the T3 estate return and the clearance certificate.

Wills & Estates5 min readTSLBy the Treadstone Law Team · OntarioUpdated November 1, 2026
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Key takeaways
  • Start by proving your authority to CRA, then file the final T1, any optional returns, and the estate's T3 as needed.
  • Distributing property before getting a clearance certificate can make the representative personally liable for unpaid tax.
  • File the clearance request only after all returns are filed, assessed and paid, not at the same time as the returns.

Filing tax returns for someone who has died can feel like a long list with no obvious order. As an estate trustee in Ontario, you are usually the person who deals with CRA, and a few early steps make the rest much easier.

This article lays out the process in the order most estates follow. Your estate may need fewer steps or more, so treat it as a map and confirm details with a lawyer or accountant.

Step 1: Confirm your authority and contact CRA

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, you send 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.

Part of an estate trustee's job is winding up the deceased's affairs and paying taxes, bills and debts before distributing what is left.

Step 2: File the final T1

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. Income paid periodically, such as interest, rent or annuity payments, is treated as accruing daily, and the part accrued to the date of death goes on this return.

SituationFiling date
Death from January 1 to October 31April 30 of the year after death, with any balance owing
Death from November 1 to December 316 months after the death, on the same calendar day
Deceased or cohabiting spouse or common-law partner ran a business, death January 1 to December 15June 15 of the year after death, but any balance owing is still due on the regular payment date, and the later filing date does not apply if the business's expenditures were mainly for tax shelter investments
Previous year's return not yet filedThe later of the normal due date and 6 months after the date of death

Late filing carries a penalty of 5% of the balance owing, plus 1% for each full month late up to 12 months, and interest accrues on unpaid amounts.

Step 3: Consider optional returns

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. Possible optional returns include:

Next, file the estate's T3 return if required

A T3 Trust Income Tax and Information Return is generally filed for the estate if it realizes any gain or receives any payments after the death. A return may not be needed if the estate was distributed right after the death and earned no income before then. If the estate sells the home or other property, the gain is generally the sale price minus the fair market value reported on the final return, plus disposition costs.

The T3 and any balance owing are due no later than 90 days after the trust's tax year-end. A graduated rate estate can choose a non-calendar year-end, up to one year after the date of death. When an estate is wound up, its tax year ends on the date of the final distribution, and the final T3 is due within 90 days of that date.

Step 5: Get a clearance certificate, then distribute

Before distributing property, a legal representative must obtain a certificate from the Minister confirming that tax amounts are paid or security has been accepted. A representative who distributes without one is personally liable for unpaid amounts up to the value of what was distributed.

Request it on Form TX19 after all returns have been filed and assessed and amounts owing have been paid or secured, not at the same time as the returns. CRA acknowledges the request within 45 days, and the assessment can take up to 120 days if the documents are complete.

Frequently asked questions

What is the first return I should file for a deceased person?

The final T1 Income Tax and Benefit Return, which covers income and property gains up to the date of death. Its due date depends on the date of death.

Do I always need to file a T3 for the estate?

Not always. It is generally filed if the estate realizes a gain or receives payments after the death, but may not be needed if the estate was distributed right after death with no income earned.

Can the tax from the deemed sale be paid over time?

The legal representative can elect and give security acceptable to the Minister to pay tax from deemed dispositions at death in up to 10 equal annual instalments.

What happens if I distribute the estate too early?

You can be personally liable for unpaid tax up to the value of the property distributed, and the Minister can assess you at any time.

Sources

Links go to official government, court and regulator pages. The law changes — confirm you are reading the current version.

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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