Deceased Estate Tax Return in Northern Territory

Tax obligations don't end when someone dies. As executor, you're responsible for lodging the deceased's final tax return and, if the estate administration stretches across financial years, potentially one or more estate tax returns as well. Getting this wrong can trigger ATO penalties that come out of the estate — or worse, out of your own pocket.

The Date-of-Death Tax Return

Every deceased person needs a final tax return covering the period from 1 July of the relevant financial year to the date of death. If the person died on 15 March 2026, their final return covers 1 July 2025 to 15 March 2026.

You'll also need to lodge any prior year returns that the deceased hadn't filed. The ATO allows these to be lodged late without penalties once you notify them of the death, but they still need to be done.

What to include:

• All income earned up to the date of death (salary, pensions, investment income, rental income)
• Deductions for expenses incurred up to the date of death
• Any capital gains or losses from asset disposals before death

What you don't include: income earned by the estate after the date of death — that goes on a separate estate tax return.

Notifying the ATO

Before you can lodge returns or deal with the ATO on behalf of the deceased, you need to formally notify them of the death. You can do this by:

• Calling the ATO's dedicated deceased estates line
• Writing to them with a certified copy of the death certificate
• Having your tax agent notify them through their professional portal

Once notified, the ATO links the deceased's Tax File Number to your role as executor, giving you access to their tax records and the ability to lodge returns on their behalf.

Estate Tax Returns

If the estate earns income during the administration period — interest on estate bank accounts, rental income from estate property, dividends from shares — you may need to lodge a trust tax return for the deceased estate.

This requires applying for a separate Tax File Number for the estate through the ATO. The estate is treated as a trust for tax purposes, and income is taxed at standard rates (not the deceased's personal rates).

For most simple estates administered within a single financial year, this isn't necessary. But if the administration stretches over 12+ months — common in the NT where mandatory waiting periods alone consume 8+ months — the estate will likely earn enough interest to trigger a return.

Capital Gains Tax on Estate Assets

One of the most misunderstood areas of deceased estate taxation: there is no CGT event when assets pass from the deceased to the estate. The executor inherits the deceased's cost base for CGT purposes.

However, CGT does apply when:

• The executor sells an asset (shares, investment property) during estate administration
• A beneficiary later sells an inherited asset

The family home is generally exempt if it was the deceased's main residence and is sold within two years of death (or continues to be a beneficiary's main residence). Investment properties and shares carry the deceased's original cost base forward.

Superannuation Death Benefits

Superannuation death benefits paid to tax dependants (spouses, children under 18, financial dependants) are tax-free. Death benefits paid to non-dependants — typically adult children who are financially independent — are taxed. The taxable component is taxed at up to 30% plus Medicare levy.

This distinction catches many families off guard. The tax treatment depends on who receives the benefit, not the size of the estate or the deceased's tax bracket.

Deadlines

• Date-of-death return: due by the later of (a) the normal tax return deadline for that financial year, or (b) a reasonable period after you've been appointed executor
• Estate trust returns: due by 31 October each year (or later if lodged through a tax agent)
• Prior year returns: should be lodged as soon as practicable after appointment

The ATO is generally flexible with deceased estate timing — they understand executors are often new to the process. But "flexible" doesn't mean "optional." Failing to lodge eventually triggers automated penalties.

When to Use an Accountant

For simple estates with straightforward income (salary, pension, basic bank interest), you can lodge the final return yourself using myTax or a paper form.

Consider engaging an accountant if:

• The estate includes investment properties, shares, or business interests
• There are CGT implications from asset sales
• The administration will span multiple financial years
• The deceased had complex financial arrangements (trusts, self-managed super)
• There are outstanding ATO debts or unfiled returns from prior years

The Northern Territory Probate Process Guide includes a tax obligations checklist and timeline showing when each ATO requirement falls due relative to the broader estate administration process.

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