Estimating and Truing Up the Estate Value in Ontario: From Probate Application to Final EAT

One of the realities of estate administration in Ontario is that the executor rarely has a perfectly precise estate value on the day they apply for a Certificate of Appointment. Real estate takes time to appraise. Financial institution statements have to be requested. Business interests need valuation. Yet the probate application requires a declared estate value, and the Estate Administration Tax is payable upfront based on that declaration.

This is the estimate-and-true-up reality of Ontario's Estate Administration Tax system: executors work with their best available figures at the time of application, then confirm or correct those figures when they file the Estate Information Return (EIR) with the Ministry of Finance. Understanding how this process works — and how to navigate it without triggering penalties — is essential for any Ontario estate trustee.

Phase One: The Initial Declaration at the Court Application

When the executor applies for the Certificate of Appointment, they must declare the gross value of the estate on the application. The Estate Administration Tax is calculated and paid based on that declaration before the court will issue the certificate.

At this stage, the executor may have:

• Exact balances for bank accounts (easily confirmed with statements)
• An estimate for real estate (based on a realtor's opinion or a preliminary appraisal)
• A rough figure for personal property
• Uncertainty about business interests, receivables, or assets still being identified

The declaration is made under oath. While perfection is not expected at this stage — the EIR process exists precisely because values are refined over time — the executor should use reasonable best efforts to provide an accurate estimate. A value that is clearly far below reality (a $600,000 home declared at $300,000, for example) raises serious compliance concerns.

Phase Two: Gathering Definitive Valuations

After the certificate is issued, the executor's work continues. Part of this work is assembling the information needed for the EIR. Best practices include:

Real Estate

Commission a formal appraisal from an accredited appraiser as of the date of death. If you used a realtor's estimate for the court application, the appraisal may confirm it, slightly adjust it, or reveal that the estimate was off. Either way, the appraisal creates a defensible record.

Investment Accounts

Request a formal statement of account value as of the date of death from each financial institution. This removes any ambiguity.

Registered Accounts (With and Without Beneficiaries)

Confirm with the financial institution whether each registered account has a named beneficiary. If there is a valid beneficiary designation, the account is excluded from the estate. If the estate is the beneficiary (or no beneficiary is named), the value is included.

Private Company Shares

If the estate includes shares in a private corporation, a Chartered Business Valuator should be engaged to provide a formal valuation opinion as of the date of death. This takes time and should be initiated early.

Personal Property

For ordinary household contents, a reasonable estimate is generally acceptable. For high-value items (jewellery, art, collectibles), engage an appropriate appraiser.

Phase Three: Filing the Estate Information Return

Once valuations are assembled, the EIR is filed with the Ministry of Finance — as of writing, within 180 days of the certificate being issued (verify the current deadline). The EIR breaks out estate value by asset category and requires the executor to certify the accuracy of the information provided.

When the Confirmed Value Matches the Initial Declaration

If the final values on the EIR match or are close to the initial declaration, no additional tax is owing. The EIR effectively confirms the initial payment was correct.

When the Confirmed Value Is Higher Than the Initial Declaration

If the EIR shows a higher estate value than was declared at the court application, the executor must pay:

• Additional Estate Administration Tax on the difference
• Interest from the date the additional tax was due (typically linked to the original application date)

The interest rate and method of calculation are set by the Act and applicable regulations — verify current rates with the Ministry of Finance.

When the Confirmed Value Is Lower Than the Initial Declaration

If the final value is lower than what was paid at the application stage, the estate may be entitled to a refund of the overpaid EAT. The process for claiming a refund should be confirmed with the Ministry.

Filing an Amended Estate Information Return

If, after filing the EIR, the executor discovers additional assets, realizes an error was made, or receives an updated valuation, they must file an amended EIR. The amendment process works the same way: additional tax is assessed if the value goes up, and the executor should contact the Ministry about any credit or refund if the value goes down.

There is no penalty simply for filing an amended return in good faith. The risk of penalty arises when the inaccuracy was willful or the correction was not made at all.

Documentation Is Your Protection

Every value that appears on the EIR should be supported by a document. The Ministry can audit the EIR and request supporting evidence for any category of assets. Executors who can produce:

• Appraisals and CMAs for real property
• Financial institution statements dated to the date of death
• Business valuator reports
• Insurance appraisals for personal property

...are in a far stronger position than those who relied on rough estimates with no written support.

Create a valuation file for the estate. Store every supporting document. Keep records even after the EIR is filed, in case of a subsequent audit.

Frequently asked questions