Ontario Estate Administration Tax Explained: What It Really Costs to Pass On a Home After Death

Step 1: Understand what probate is, and why a home rarely escapes it

In my years as a broker, I have watched countless families hear the word probate for the first time only after losing a loved one. In plain terms, probate is the court process that confirms a will is valid and formally authorizes a person — the Estate Trustee — to deal with the estate. The document they receive is the Certificate of Appointment of Estate Trustee.

Why does a home rarely escape probate? Because to transfer a property out of the deceased’s name, or to sell it to a buyer, the other side’s lawyer and lender usually need to see that certificate before they will accept that someone has authority to sign on the deceased’s behalf. In practice:

• Without probate, a home often cannot be transferred or sold — unless it was held in a specific way (more on that below).
• The tax becomes payable when the certificate is obtained. According to the Government of Ontario (ontario.ca), the tax is due on the day the estate certificate is issued, and is paid as a deposit when the application is filed.

The core insight: probate is not a question of whether you want to pay tax — it is the precondition for legally dealing with the home at all.

Step 2: Run the numbers and see what your home actually owes

The math behind the Estate Administration Tax is simple. What trips people up is which value gets taxed. According to the Government of Ontario (ontario.ca):

• The first $50,000 of the estate’s value is exempt (a rule in effect since January 1, 2020).
• Above $50,000, the tax is $15 for every $1,000, with any partial $1,000 rounded up — roughly 1.5%.

How is the home valued? This part matters most:

• It is based on the fair market value at the date of death, and per ontario.ca, that figure stands even if the property later sells for more or less.
• The home’s value can be reduced by encumbrances registered against it — a mortgage, collateral mortgage, or lien (ontario.ca). In other words, you count the net equity, not the full market price.

A concrete example: a Toronto home appraised at $1,000,000 on the date of death, with a $300,000 mortgage outstanding, enters the estate at $700,000 of net value. The tax is roughly (700,000 − 50,000) ÷ 1,000 × 15 ≈ $9,750. With no mortgage and $1,000,000 of net value, it would be about $14,250. Not astronomical — but very much reducible through proper planning, and worth understanding before you assume the bill is fixed.

One more practical note: the value that goes into this calculation is the value of the assets that actually pass through the estate. Assets that pass outside the estate — by survivorship, or by a valid beneficiary designation on certain accounts — are not part of this number. That distinction is the whole basis of the planning discussed in the next step.

Step 3: How joint ownership and survivorship avoid probate — and the trap inside

This is the question families ask me most: “If I put the house in joint names with my child, do I avoid probate tax?” The honest answer is: possibly — but only if it is done correctly, otherwise it backfires.

Ontario property can be co-owned two ways:

• Joint Tenancy with Right of Survivorship: when one owner dies, the property passes automatically and in full to the surviving joint owner, outside the estate that requires probate — so that share is not counted for EAT.
• Tenants in Common: each owner’s share falls into the deceased’s estate and still requires probate.

So the structure that truly bypasses the tax is joint tenancy with survivorship. Between spouses, holding a home this way is often natural and sensible.

The trap appears when a parent adds an adult child to title. As Ontario estate lawyers consistently caution, if the parent leaves no clear written intention and adds the child merely “for convenience,” a court may treat it as a resulting trust — the child is only holding title for the parent, the home remains part of the estate, the EAT is owed in full, and it can spark litigation among the other heirs.

My advice: joint ownership is not a tax trick — it is a major ownership decision. Either it is a genuine gift (backed by complete documentation of intent) or you should not use it to save tax at all. Speak to an estate lawyer and accountant before acting.

Step 4: The executor's filing duty — don't forget the Estate Information Return

Many people assume that once the tax is paid, the job is done. There is one more mandatory step. According to the Government of Ontario (ontario.ca), an estate representative must file an Estate Information Return (EIR) with the Ministry of Finance within 180 calendar days after the estate certificate has been issued.

• The return itemizes the estate’s assets and their values, including real estate, and is how the government checks that the tax you paid was accurate.
• The 180-day clock starts on the date the certificate is issued — not the date of death, and not the date the application was filed. Mark the right starting point.
• Note: since 2025, Ontario requires the EIR to be filed online, and a few certificate types (such as certificates during litigation) are exempt from this obligation.

For real estate, take special care: back the home’s value with a professional appraisal as of the date of death. If the estate is ever audited, a formal date-of-death appraisal is your strongest evidence that the valuation was reasonable. As an executor, it is better to spend on an appraisal up front than to leave yourself exposed to questions later.

Beyond the probate tax sits a layer of income tax that many overlook. According to the Canada Revenue Agency (CRA, canada.ca), a person who dies is treated as having disposed of all their capital property at fair market value immediately before death — a “deemed disposition.” If the home has gained value, that capital gain must be reported on the deceased’s final return.

The good news is the Principal Residence Exemption: per CRA (canada.ca), if the home was the deceased’s principal residence for all the years they owned it, some or all of the gain may be exempt. But even when fully exempt, it must still be reported — the legal representative designates the property using Form T1255 and reports the disposition on Schedule 3.

Two points matter most for heirs and executors who later sell:

• The heir’s cost (adjusted cost base) is generally reset to the fair market value at the date of death. So when you eventually sell, you are taxed only on the gain between the date of death and the date of sale (CRA, canada.ca).
• If the inherited home is not your own principal residence, that post-death gain may be a taxable capital gain — which is exactly why the date-of-death value should be locked in from the start. It is both the basis for the probate tax and the starting line for future income tax.

If a home is held jointly by spouses, is Estate Administration Tax owed when one dies?

If it is held as a joint tenancy with right of survivorship, the property passes automatically to the surviving spouse outside the estate that requires probate, so that share is generally not counted for Estate Administration Tax. If it is held as tenants in common, the deceased's share still falls into the estate and requires probate.

Is the home taxed at market value or at the price it actually sells for after death?

According to the Government of Ontario (ontario.ca), it is valued at the fair market value as of the date of death, and that figure stands even if the home later sells for more or less. Mortgages and other encumbrances registered against the property can be deducted, so it is the net equity that is counted.

Can adding an adult child to title save probate tax?

It carries risk. If the child is added merely for convenience with no clear written intention to gift, a court may treat it as a resulting trust — the child holds title for the parent, the home stays in the estate, the tax is still owed, and disputes among heirs can follow. To do it properly you need full documentation proving a genuine gift. Consult an estate lawyer before acting.

As an executor, what must I do after paying the tax?

You must file an Estate Information Return with Ontario's Ministry of Finance within 180 calendar days after the certificate is issued, listing the estate's assets and values, including real estate. The clock starts on the certificate issue date, not the date of death. Since 2025, filing is done online.

Will I owe capital gains tax when I later sell an inherited home?

An heir's cost base is generally reset to the fair market value at the date of death, so a later sale is taxed only on the gain after that date. If the inherited home is not your own principal residence, that gain may be a taxable capital gain. If it was the deceased's principal residence throughout their ownership, the gain may be exempt, but it must still be reported using Form T1255 and Schedule 3 (CRA, canada.ca).