Estate Administration Tax Ontario: How It's Calculated and What Executors Must File
Ontario's Estate Administration Tax is one of the most misunderstood obligations in the entire estate settlement process. Executors frequently miscalculate it, miss the mandatory follow-up filing, or discover too late that the penalties for non-compliance are severe.
This post covers how the tax is calculated, what gets included in the estate value, what cannot be deducted, and the 180-day deadline that catches more executors off guard than any other requirement.
What Is the Estate Administration Tax?
The Estate Administration Tax (EAT) is the provincial tax levied on estates when an executor applies for a Certificate of Appointment of Estate Trustee — commonly called probate — from the Ontario Superior Court of Justice. Before 2020, this was called "probate fees." The name changed; the mechanism did not.
The EAT is calculated on the gross value of the estate at the date of death, paid directly to the Minister of Finance when the probate application is filed.
The Calculation
Ontario's EAT formula works as follows:
- First $50,000 of estate value: $0 (completely exempt)
- Value over $50,000: $15 per $1,000, or part thereof
The critical detail most executors miss: the estate value must be rounded up to the nearest $1,000. An estate worth $239,250 is calculated as $240,000.
Example calculation:
| Estate Value | Calculation | EAT Owing |
|---|---|---|
| $80,000 | ($80,000 − $50,000) × $15/1,000 | $450 |
| $150,000 | ($150,000 − $50,000) × $15/1,000 | $1,500 |
| $240,000 | ($240,000 − $50,000) × $15/1,000 | $2,850 |
| $500,000 | ($500,000 − $50,000) × $15/1,000 | $6,750 |
For a $500,000 estate, the EAT alone is $6,750 — before any court filing fees. Understanding this number upfront matters for estate planning and for managing beneficiary expectations.
What Gets Included in the Gross Estate Value
The EAT is calculated on probatable assets — assets that pass through the estate and require the Certificate of Appointment before they can be transferred. This includes:
- Sole-name bank accounts and investment accounts
- Real estate held solely in the deceased's name, or as tenants in common (at fair market value minus registered mortgages)
- Vehicles, boats, and other personal property of significant value
- Business interests that pass through the estate
- Accounts receivable
Assets that do NOT go through the estate and are NOT included in the EAT calculation:
- Joint bank accounts or investment accounts (pass directly to the surviving joint owner)
- Real estate held in joint tenancy with right of survivorship
- Registered accounts with named beneficiaries (RRSPs, TFSAs, RRIFs, life insurance)
- Assets held in trust
If the majority of an estate's value flows through joint ownership or beneficiary designations, the probatable estate — and therefore the EAT — may be far smaller than the overall value of what the deceased owned.
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What Cannot Be Deducted
This is where executors make costly errors. You cannot reduce the gross estate value for EAT purposes by deducting:
- Funeral expenses
- Credit card balances or lines of credit
- Personal loans or mortgages on non-real-property assets
- Outstanding utility bills or taxes
- Legal fees for the estate
The only allowable deductions from real property are registered encumbrances against it — a mortgage or lien registered on title. Unsecured debts have no effect on the EAT calculation.
If an estate is worth $300,000 in gross assets but has $60,000 in unsecured debt, the EAT is still calculated on $300,000.
The Court Filing Fee
In addition to the EAT, executors pay a court filing fee of $138 when submitting the probate application to the Ontario Superior Court of Justice via the Ontario Courts Public Portal (OCPP) — the new digital platform that replaced Justice Services Online beginning in late 2025.
The 180-Day Estate Information Return Deadline
After the court issues the Certificate of Appointment, the executor's obligations to the Ministry of Finance are not finished. Within 180 calendar days of receiving the Certificate, every executor must file the Estate Information Return (EIR).
This deadline applies even if the estate owed no EAT (because it was under $50,000). If the court issued a Certificate, the EIR is mandatory.
The EIR requires the executor to document the precise fair market value of every probatable asset as of the date of death. This is the same inventory used to calculate the EAT deposit, but filed separately as a formal disclosure to the Ministry of Finance.
As of March 3, 2025, the EIR must be filed online. The Ministry permanently discontinued fillable PDF submissions on that date. The only accepted filing method is the Ministry of Finance's online services portal at services.fin.gov.on.ca.
Form 9955: The Estate Information Return
The EIR is filed using Form 9955. The form asks for:
- The date the Certificate of Appointment was issued
- A detailed breakdown of all probatable assets and their date-of-death values
- The executor's contact information and certification
You cannot simply resubmit your original estimate. If the values on the EIR differ materially from what was submitted to the court, you will also need to account for any EAT adjustment.
Amendments and the 60-Day Rule
If you discover a new asset after filing the EIR — an overlooked bank account, a GIC you weren't aware of, a valuation that was later revised — you are required to file an Amended EIR within 60 calendar days of the discovery.
Failing to file the amendment is not treated as a technical oversight. Ontario's Estate Administration Tax Act treats it the same as failing to file the original return.
The Penalties for Non-Compliance
Ontario's Ministry of Finance takes the EIR seriously. Penalties for failing to file, filing late, or filing incorrect information include:
- Fines of at least $1,000, or up to twice the tax payable (whichever is greater)
- Potential imprisonment for up to two years for deliberate misrepresentation
The Ministry also retains the authority to audit the estate and reassess the EAT for up to four years after the Certificate of Appointment was issued. Keeping meticulous records of how every asset was valued — appraisals, bank statements, brokerage statements, and property assessments — is not optional.
The Four-Year Audit Window
Even after distributing the estate and closing the administration, the Ministry of Finance can audit your EAT assessment for up to four years post-issuance. This is why executors should retain all supporting documentation long after the estate is closed:
- Bank statements showing account balances on the date of death
- RRSP/TFSA/RRIF statements
- Property appraisals or MPAC assessments
- Investment portfolio statements
- Any professional valuations obtained for business interests or personal property
Ontario Executor's EAT Checklist
Before filing your probate application:
- [ ] Calculated gross estate value (probatable assets only, rounded up to nearest $1,000)
- [ ] Applied $50,000 exemption correctly
- [ ] Calculated EAT at $15 per $1,000 of remainder
- [ ] Documented allowable real estate deductions (registered mortgages only)
- [ ] Prepared to pay EAT deposit to Minister of Finance at time of court filing
- [ ] Set a reminder for 180 days from Certificate issuance to file Form 9955 online
Managing the Estate Administration Tax, the 180-day EIR, and the court filing process in Ontario is exactly the kind of work that benefits from a clear sequenced guide rather than piecemeal government pages. The complete Ontario estate settlement guide covers the EAT calculation, the EIR filing process, and every other deadline executors face — organized by the month they occur.
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