Final Tax Return Deadline if Death Was January to October in Canada

When someone dies, the executor or other legal representative has to file a final income tax return for them. The first question is almost always the same: by when? For a death in the first ten months of the year, the answer is fairly simple, but there are a few exceptions that catch people out.

This article explains the standard deadline, how it differs when the person ran a business or died early in the year, and what happens if the date is missed. The figures and dates here are federal. Your situation may have details that are worth confirming with a lawyer or accountant.

This article covers Canadian federal tax law, which applies in every province.

The standard deadline

If the person died between January 1 and October 31, the final T1 return and any balance owing are both due on April 30 of the year following the death. A final return must be filed for every person who dies.

For example, if someone died in March, the final return for that year and any tax owing would be due April 30 of the following year. The same pattern applies in other years.

If a due date falls on a weekend or a CRA-recognized holiday, a return is on time if it is received or postmarked by the next business day, and a payment is on time if it is received the first business day after the due date.

Exceptions that change the date

The April 30 rule is not the whole story. These situations have their own dates:

• Self-employed: if the person, or a spouse or common-law partner living with them, ran a business on the date of death, a death from January 1 to December 15 means the final return is due June 15 of the following year. The payment date is still not extended.
• Tax shelters: the self-employed extension is not available where business expenditures were mainly the cost of tax shelter investments.
• Early-year death with a prior return unfiled: if the person died in 2026 on or before the 2025 filing due date and the 2025 return was not filed, the 2025 return and any balance owing are due 6 months after the date of death, on the same calendar day. A final 2026 return is also required, so two returns are needed.
• Surviving spouse in that early-death case: the survivor's own 2025 return has the same filing due date as the deceased's 2025 return, but any balance the survivor owes must still be paid by April 30, 2026 to avoid interest.

Quick comparison

Payment is a separate question

Where a filing date is later than the usual one, the payment date does not move with it. The CRA says the payment due date does not change, and you may need to pay before filing to avoid interest. Overpayments are generally refunded once the return is assessed.

Instalments are less of a worry. No instalments are required after the date of death, and only instalments that were due but unpaid before death must be paid.

Penalties, interest and relief

A late final return with a balance owing attracts a penalty of 5% of the balance plus 1% of the balance for each full month late, up to 12 months. The penalty may be higher if a late-filing penalty was assessed on the deceased's return for any of the 3 previous years. Filing on time avoids this penalty even if the balance cannot be paid in full.

Interest is compounded daily on unpaid amounts from the day after the due date until paid, and it also applies to late-filing penalties. The CRA may cancel penalties or interest if a late filing was caused by circumstances beyond your control, through its cancel or waive penalties and interest process.

Prior-year returns that were already due keep their original filing and payment dates, and the legal representative must make sure any unfiled ones are filed.

What to do next

• Confirm the exact date of death, because it decides which deadline applies.
• Find out whether the person or their spouse or common-law partner ran a business on the date of death.
• Check whether the return for the year before death was filed.
• Notify the CRA of your role as legal representative before you access the deceased's tax records.
• Gather the death certificate, the will or court document naming the executor, and the deceased's SIN.
• Estimate any balance owing early, since payment dates do not move.
• Ask a lawyer or accountant for help if the estate is complex or a deadline has already passed.

A final return can be filed before the court process for the estate is finished. The CRA accepts a will naming an executor or a court document appointing a representative.

Frequently asked questions