HomeLearnProvince GuidesHow to Execute a Will in Ontario
Province Guides6 min read·Updated April 2025

How to Execute a Will in Ontario

Signing your will is not enough. To be legally valid in Ontario, your will must be properly executed — signed by you in front of two qualifying witnesses who also sign. Most people don't know that execution is where things go wrong. This guide covers everything you need to know.

Canada Notary Legal Team
Published March 2025 · Reviewed by qualified notaries

What is will execution?

Execution is the formal signing process that makes your will legally valid. A will that has been drafted but not properly executed has no legal effect — it is just a document.

In Ontario, execution is governed by the Succession Law Reform Act, R.S.O. 1990, c. S.26. The Act requires that your will be in writing, signed by you at the end, and signed by two witnesses who are both present at the same time when you sign.

Ontario witness requirements

Under Ontario law, your two witnesses must each be:

  • At least 18 years of age
  • Present at the same time when you sign
  • Not a beneficiary named in the will
  • Not the spouse of a beneficiary named in the will
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Can a family member witness my Ontario will?
Yes — provided they are not a beneficiary or the spouse of a beneficiary. An adult child who receives nothing in the will can legally witness it.

The affidavit of execution (Form 74.8)

An affidavit of execution is a sworn statement by one of your witnesses confirming that your will was properly signed and witnessed. In Ontario this is Form 74.8 under the Rules of Civil Procedure.

The affidavit is not required for your will to be valid. But it is required when your will goes to probate — and without one, your executor may need to track down your witness years later.

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Do not skip the affidavit
Estates lawyers in Ontario see this regularly — an executor appears at probate without an affidavit, the witness cannot be located, and the process stalls. The affidavit takes 5 minutes at the signing appointment. Always get it done.

How much does execution cost?

Standalone will execution costs at an Ontario notary typically range from $75 to $225. With Willbeing, execution is included in every package at no extra charge.

Willbeing
Standalone Notary
Lawyer
Will preparation
$99.99
N/A
$500–$1,000
Execution appointment
Free
$75–$225
Included
Affidavit of execution
Free
$50–$100
Included
Total
$99.99
$125–$325+
$500–$1,000+

Common mistakes to avoid

These are the execution errors Ontario estates lawyers see most frequently:

  • Using a beneficiary or their spouse as a witness — may void their gift
  • Only one witness present (two are required)
  • Witnesses signing at different times or locations
  • Not completing the affidavit of execution at the time of signing
  • Handwriting changes not initialled by all parties
Create your Ontario will — execution included free.
Willbeing prepares your will with Ontario-specific execution rules applied automatically. Execute in person at Canada Notary, same day or next day.
Continue reading
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Affidavit of Execution — Ontario Form 74.8
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Online Will vs Lawyer in Canada
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In this article
1What is will execution?
2Ontario witness requirements
3The affidavit of execution (Form 74.8)
4Where to sign your will in Ontario
5How much does execution cost?
6Marriage and your will in Ontario
7Common mistakes to avoid
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